CSWIP 3.1 Q Answers PDF [PDF]

Zitiervorschau

1) STRA Test is....? A) Prevent Lamellar Tearing B) Measure Ductility C) Measure hardness D) None of the above 2) In C-Mn Steel which welding process is not used....? A) MIG B) MMA C) SAW D) None of the above 3) Which Electrode is not used for PE position....? A) Basic B) Cellulose C) Rutile D) Iron Powder 4) You Notice that welder making pre heat above the level of WPS which one is affected..? A) It increases the grain size of the boundary & removes hydrogen B) It will give refined grain and remove hydrogen C) It will increase the toughness and removes hydrogen D) None of the above 5) Burn Through occurs when....? A) Large root Face B) High arc voltage c) Large root gap D) None of the above 6) Porosity caused by....? A) High Welding Current B) Damp Electrode C) Joint Design D) All the above 7) To prevent contamination in the TIG…..? A) Slope out Device B) Slope in Device C) Post flow of Device D) None of the above 8) WPS is….? A) The documents available to welding inspector, NDT personnel B) The document that contain relevant WPQR and wpqr is available to welding inspector, NDT personnel C) Both A & B D) None of the above 9) In NDT…? A) In RT, 680 dia, 20mm thickness, DWDI is used B) In RT, 70mm dia, 60mm Thickness, DWSI is used C) In RT, 85 mm dia, 25 mm thickness, DWDI is used D) A will be used by DWDI & DWSI 10) In RT ….? A) Radiography will show lack of fusion as dark straight line in one side and other side bright B) Radiography will show undercut as dark straight line in one side C) Radiography will show lack of root penetration in one side bright and other side dark D) None of the above 11) In contract, they said 20% RT and every one failure 2RT required and you would find one failure. What would you your action….? A) You agree and you will show substituent the joint B) You disagree and leave the Joint C) You will ask more % of RT for Quality Assurance D) None of the above 12) Tensile Test give….? A) Longitudinal weld metal shows reduction in area as 20% B) Transverse specimen show reduction in area as 25% C) It will Show Rm D) Both A & B

13) In MMA ….? A) DC-ve gives deeper penetration than DC+ve B) AC gives greater deposition than DC-ve C) DC-ve gives greater deposition than DC+ve D) None of the above 14) Lamellar Tearing detected by…? A) RT B) UT C) Visual Inspection D) None of the above 15) According to BS EN, Consumables E50 3 B. In these 3 indicates ….? A) Toughness B) Yield Strength C) Chemical Composition D) None of the above 16) What would you consider while calibrating MIG Welding operation? A) Amps, Volts, Travel Speed, Gas rate Flow B) Amps, Volts, Travel Speed, Welding Consumable C) Amps, Volts, Travel Speed, CTWD D) None of the above 17) Oxy Fuel Cutting Chemical Reaction….? A) Exothermic Reaction B) Endothermic Reaction C) Convection Reaction D) None of the above 18) Which one is solid state welding…? A) Electro Slag B) Friction C) Resistance Welding D) None of the above 19) DPI …..? A) Variables of Contrast of paint B) Variables of Type of Developer C) Detect Sub Surface defect D) None of the above 20) Fillet Weld Fracture Surface is ….? A) Smooth and Curved Shaped B) Flat and Rough Face C) Crystalline Face D) None of the above 21) What is the major difference between code and standard? A) B) C) D)

Code is a Specific Product Code are Mandatory Standard is extracted from code None of the above

22) MMA, TIG and SAW...? A) B) C) D)

All use a Flat characteristics All use a Constant Voltage Characteristics All used a dropping characteristics MMA and Tig use a Dropping Characteristics and Saw always use Flat Characteristics.

23) During Production welding, is welder allowed to adjust the welding current? A) B) C) D)

Yes, he can adjust the current, If he is qualified No, except the welding supervisor approves No, current must not be adjusted None of the above

24) Tig Welding..? A) B) C) D)

Is not used in welding of 306L Used in AC and DC Current for all material Used only in DC +ve Not used for Austenitic Stainless steel

25) Pre heat requires....? A) B) C) D)

Knowledge of CEV, Hydrogen Scale and Material Thickness Only the material shape and residual stress Answer A is correct but more information needed Answer B is correct to determine preheat

26) Tensile Test determines....? A) B) C) D)

Toughness Hardness Re Only Rm and Re

27) The penetration power of X-ray is measured...? A) B) C) D)

Curies Kilo Volts Joules Electron Volts

28) According to BS EN 22553, which statement is true....? A) B) C) D)

Elementary Symbols placed on indication Line means weld on other side Elementary Symbols placed on reference Line means weld on arrow side Elementary Symbols placed on reference Line means weld on other side None of the Above.

29) Pre heat is carried out....? A) B) C) D)

After Welding Before Welding Before Welding and Before next pass None of the Above

30) Tack Welding...? A) B) C) D)

It is Important Length and Position depends on material thickness and size It always require preheat None of the Above.

31) You noticed an excess penetration in a C-Mn welded country pipe line, what could be the reason...? A) B) C) D)

Wrong Electrode Contaminated Electrode Excess Root Grinding Large Root Face

32) Which type of electrode is not best for Welding Cross country pipe line...? A) B) C) D)

Basic Rutile Cellulose Iron powder

33) What information does BS EN 1011 gives...? A) B) C) D)

Approval for WPS Approval for Welder Qualification Approval for Preheat Approval for Destructive Testing

34) Which of the following has the great effect of current during MIG/MAG welding..? A) B) C) D)

Arc Length Arc Voltage Flow rate WFS

35) Which of the following is not true about MIG/MAG...? A) B) C) D)

WFS is Constant ARC length is Constant Current is Constant None of the above.

36) Flux Core...? A) B) C) D)

Basic type need Baking Do not need a backing during welding as Flux covers prevent Oxidation of root Need not be used with gas shielding None of the Above.

37) Solidification Cracking...? A) B) C) D)

Occurs 72 hours after welding Occurs Immediately after welding & some hours after welding Immediately after welding None of the Above.

38) Hydrogen Induced Cracking...? A) B) C) D)

Occurs in weld metal Also may be referred to as under bead crack Occurs as a result of weld Solidification None of the Above.

39) In plain Carbon Steel...? A) B) C) D)

Carbon reduce Strength Manganese determine Strength and hardness Carbon determines Strength and Hardness None of the Above.

40) Which alloying elements controls Corrosion resistant...? A) B) C) D)

Chromium Carbon Manganese Nickel

41) The holding Temperature of basic Electrode....? A) B) C) D)

250 Degree Celsius 350 Degree Celsius 150 Degree Celsius 70 Degree Celsius

42) A Material with Z Quality has...? A) B) C) D)

High Strength Hardness Toughness Good Through Ductility

43) Which of the following Codes is used for Welder Qualification...? A) B) C) D)

ASME Section V ASME Section II ASME Section IX ASME Section VIII

44) Tensile Testing can determine...? A) B) C) D)

Notch Toughness Hardness %E %E and %Z

45) Fatigue Fracture, the surface appearance are...? A) B) C) D)

Contain some stress ripples Show plastic deforms and rough expansion Rough and Torn Flat Surface

46) A Fillet Weld has a design throat thickness of 6mm, what is the leg length Size....? A) B) C) D)

8.4 mm 5 mm 8.5 mm More information needed

47) What type of standard formed in a metal with low heat input during welding....? A) B) C) D)

Austenite Pearlite Bainite Martensite

48) What is the heat input for MMA Welding of C-Mn with given variables 22V/250A, 250mm/min? A) B) C) D)

1.056 KJ/cm 1.056 KJ/mm 1.56 J/mm 1.56 J/cm

49) A Stabilizer is used in Stainless Steel....? A) B) C) D)

Increase carbon Content in grain boundary Increase Chromium Carbide in grain boundary Reduce Chromium Carbide in grain boundary Reduce Carbon Content in grain boundary

50) Which of the following statement for hydrogen control are true....? A) B) C) D)

MMA basic electrode will introduce more hydrogen than Agglomerated basic flux TIG welding will introduce more hydrogen than Agglomerated Acid flux MAG solid wire will introduce less hydrogen than fused basic flux None of the Above.

51) Proof Stress is....? A) B) C) D)

Stress acting only in pipe Used in measuring UTS of Aluminium A system used in determine Re during tensile testing None of the above

52) In TIG welding....? A) B) C) D)

Up slope is used to prevent weld metal contamination Down slope is used to prevent weld metal contamination Post flow is used to prevent weld metal contamination None of the Above

53) Pre heat is....? A) B) C) D)

Used to increase Y.S and reduce hydrogen Used to increase Ductility and reduce Hydrogen Used to reduce % stress and reduce Hydrogen Used to increase toughness and reduce Hydrogen

54) Solidification Crack.....? A) B) C) D)

Occurs Longitudinally on weld metal Transverse on parent material HAZ Toe of the weld

55) The weld symbol of

A)

B)

c)

56) In a SAW welding process, which could be reason for centre line crack....? A) B) C) D)

Deep and Narrow weld Large amount of hydrogen Lamination present in parent material Poor start and stop

57) Hydrogen Induced Cold Cracking occurs 48-72 Hr after welding, what could be the reason...? A) B) C) D)

Hydrogen diffusion and molecules formation take time Time taken for weld metal to become hard Time taken for weld metal to become martensite Time taken for weld metal to become solidifies

58) Which NDT method is associated with IQI..? A) B) C) D)

RT PT UT MT

59) Which of the following is a limitation of RT....? A) B) C) D)

Penetration limitation, especially between source and material Limitation between UG Cannot be used in stainless steel None of the above

60) An open corner joint is an example of...? A) B) C) D)

Butt weld Fillet Weld Seam weld Spot weld

D)

1. b 2. a 3. d 4. a 5. c 6. d 7. c 8. a 9. c 10. a 11. a 12. c 13. c 14. b 15. a 16. a 17. a 18. b 19. b 20. d 61. c 62. b 63. b 64. d 65. b 66. d 67. a 68. b 69. a 70. a 71.c 72. d 73. a 74. b 75. d 76. d 77. c 78. a 79. c 80. d

PAPER 1 21. d 22. c 23. a 24. b 25. c 26. d 27. b 28. b 29. b 30. b 31. c 32. d 33. c 34. d 35. c 36. c 37. c 38. b 39. c 40. a PAPER 4 81. a 82. b 83. c 84. c 85. a 86. c 87.d 88.d 89. b 90. b 91. b 92. b 93. b 94. d 95. d 96. d 97. b 98. c 99. b 100. d

41. c 42. d 43. c 44. c 45. d 46. c 47. d 48. b 49. c 50. d 51. c 52. c 53. b 54. a 55. c 56. a 57. a 58. a 59. a 60. b

1. c 2. b 3. c 4. c 5. d 6. c 7. b 8. d 9.  a 10. d 11. b 12. c 13. b 14. d 15. d 16. a 17. d 18. d 19. b 20. c

101. a 102. b 103. c 104. b 105. c 106. d 107. d 108. c 109. d 110. d 111. d 112. d 113. c 114. c 115. c 116. a 117. c 118. c 119. d 120. b

121. c 122. d 123. d 124. a 125. b 126. d 127. b 128. c 129. b 130. c 131. d 132. a 133. a 134. b 135. d 136. a 137. a 138. a 139. a 140. c

PAPER 2 21. b 22. d 23. c 24. b 25. b 26. a 27. b 28. b 29. d 30. d 31. d 32. d 33.d 34. d 35. d 36. d 37. b 38. d 39. d 40. d PAPER 5 141. b 142. b 143. a 144.a  145. a 146. c 147. c 148.a 149. c 150. d 151. d 152. a 153. c 154. a  155. d 156. c 157. d 158. d 159. b 160. b

41. c 42. c 43. a 44. c 45. c 46. d 47. d 48. c 49. c 50. a 51. c 52. b 53. c 54. d 55. c 56. b 57. b 58. a 59. b 60. c

1. b 2. b 3. c 4. b 5. b 6. c 7. b 8. a 9. b 10. b 11. d 12. a 13. d 14. b 15. c 16. c 17. c 18. d 19. a 20. b

161. a 162. e 163. c 164. a 165. d 166. a 167. d 168. b 169. d 170. d 171. b 172. c 173. a 174. d 175. c 176. c 177. c 178. d 179. c 180. b

181. c 182. d 183. c 184. a 185. d 186. d 187. b 188. d 189. b 190. b 191. d 192. b 193. d 194. b 195. d 196. a 197. c 198. d 199. b 200. d

PAPER 3 21. b 22. d 23. d 24. d 25. b 26. c 27. b 28. d 29. a 30. b 31. b 32. a 33. d 34. b 35. b 36. b 37. b 38. c 39. a 40. a PAPER 6 201. c 202. b 203. c 204. c 205. c 206. d 207. b 208. b 209. d 210. b 211. b 212. a 213. a 214. b 215. c 216. a 217. d 218. b 219. a 220. d

41. c 42. b 43. c 44. c 45. b 46. b 47. a 48. c 49. b 50. b 51. d 52. c 53. a 54. e 55. a 56. b 57. a 58. d 59. c 60. b 221. a 222. c 223. c 224. d 225. b 226. b 227. b 228. c 229. d 230. a 231. d 232. a 233. d 234. b 235. d 236. d 237. b 238. d 239. a 240. b

1)

According to EN ISO 4065, which welding process is indicated by the number 141? a) Manual metal arc. b) Submerged arc. c) MIG/MAG. d) TIG.

2)

TIG welding. a) Down slope is used to prevent weld pool contamination. b) Up slope is used to prevent weld pool contamination. c) Post flow is used to prevent weld pool contamination. d) Both A and C prevent weld pool contamination.

3)

Thoriated tungsten electrodes have the major disadvantage of: a) Being very costly. b) Being radioactive in nature. c) Low melting point. d) All of the above.

4)

The ‘pinch effect’ is useful in: a) Controlling the penetration. b) Detaching the molten droplet from the electrode. c) Controlling the bead width. d) Increasing the deposition rate.

5)

Which of the following is a limitation of the radiographic testing (RT) method? a) Cannot be used for 50mm carbon steels. b) Cannot be used for 50mm stainless steels. c) Cannot detect planar defects oriented parallel to the beam. d) Cannot be used on larger diameter pipes.

6)

A nick-break test reveals defects in the: a) Heat affect zone. b) The weld metal. c) The parent metal. d) All of the above.

7)

Susceptibility to hydrogen cracking. a) Can be predicted by tensile testing. b) Can be predicted by bend testing. c) Can be predicted by radiography. d) Can be predicted by Vickers testing.

8)

Ductile to brittle transition temperature of a welded specimen is affected by: a) Material composition. b) Welding heat input c) Pre and post weld heat treatments. d) All of the above.

9)

Fatigue cracking is most likely to occur in: a) A butt welded joint subjected to cyclic stresses, cap reinforcement machined flush. b) A butt welded joint subjected to a large static compressional loading, as welded. c) A fillet welded lifting attachment, non-load bearing, component subjected to a cyclic loading. d) A non-welding component subjected to large cyclic loading, no notch or stress Concentration points.

10) Heat input: a) If it increases, generally the heat affected zone (HAZ) width increases and the Hardness reduces. b) If it reduces, generally the HAZ width increases and the hardness increases. c) If it increases, generally the toughness increases and the hardness increases. d) Generally doesn’t have an effect on the HAZ, but if the travel speed increases the HAZ hardness increases.

11) Which of the following is an advantage of MMA welding? a) Extensive slag cleaning procedures are required. b) The quality is heavily dependent on the skill of the welder. c) Accessibility in difficult areas. d) It is easy to control the molten pool. 12) In manual metal arc welding: a) The average temperature of the arc is 2600 c b) The average temperature of the arc is 4000 c c) The average temperature of the arc is 4600 c d) The average temperature of the arc is 6000 c 13) Preheating a) Increases weld zone yield strength and removes moisture. b) Increases weld zone toughness and removes hydrogen. c) Reduces weld zone ultimate tensile strength (UTS) values and removes hydrogen d) None of the above. 14) An MP test uses which of the following equipment? a) Dry b) Compression probe c) IQI d) Prod 15) In a tensile test the initial and final gauge lengths were 50 and 75mm, the percentage Of elongation will be: a) 33.3% b) 50% c) 52.5% d) 35% 16) Charpy impact testing a) Can be used to determine the hardness of the weld zone. b) Cannot determine the hardness of the weld zone c) Can be used to assess the ductility of a material. d) Both b and c are correct 17) Sensitisation a) Is in the weld metal and forms between 600 to 850 c b) Is in the parent materials and between 600 to 850 c c) Is in the HAZ and forms between 680 to 920 c d) None of the above 18) Travel speed a) If reduced, generally the weld will be thinner with a higher hardness value. b) If increased, generally the weld will be thinner with a higher hardness value. c) Generally travel speed doesn’t affect the weld profile shape but does effect Hardness values d) None of the above 19) Arc energy a) Is the same as heat input b) Is calculated by dividing the heat input by a thermal efficiency number. c) Is always a higher value than the heat input value with the exception of saw Welding process d) Both b and c 20) When using EN 22553, the term symmetrical means? a) The same arrow and other side b) Different arrow and other side c) Only refers to arrow side d) Only refers to the other side 21) Weld decay is Also known as? a) Galvanic corrosion b) Galvanic erosion c) Inter- granular erosion d) Inter-granular corrosion

22) MMA electrodes a) All electrodes classified under the BS EN 2560 all have a minimum toughness Value of 47J b) All electrodes classified under BS EN 2560 all have a minimum toughness value Of 47J and 27J depending on the electrodes flux type. c) Electrodes classified under the BS EN 2560 code don’t have to show the minimum Toughness value’s as it’s not a mandatory requirement d) None of the above. 23) Preheating a) Is derived by taking into account the carbon equivalent value (CEV),Hydrogen scale and materials thickness b) Is seldom considered if post weld heat treatment PWHT is follow and when using a welding process with a high arc energy c) A is correct but requires more information d) None of the above 24) Improper surface cleaning for a DP testing may result in a) Excess use of penetrant b) Increased false indications c) More time for testing d) All of the above 25) A ductile fracture in a charpy impact test is shown by which of the following Fracture surface? a) Smooth surface b) Rough and torn c) Crystalline d) Chevron marks 26) The chances of solidification cracking a) Is reduced by reducing the hydrogen content from 30ml/100g to 0.04% and in the precipitation range which is >650c b) is normally associated with either a stabilized or low carbon stainless steel grade materials. c) only occurs when the joint is welded by the TIG welding process with very low heat input d) occurs when the weld is in the precipitation range, which is below 500 deg c 35) during visual inspection, magnification is sometimes used what is the maximum level a) 5-10 times b)

2-5times

c) 4-6times d)

the more magnification the better

36) welding processes a) in the TIG welding process if we had 120 amps, 28 volts, a time of 70 sec and a run out length (rol) of 98 mm heat input values would be 1.92KJ/MM b) in the MMA welding process the arc energy and heat input values would generally be the same c) in the MAG welding process if we had 220amps, 28 volts, a time of 60 sec and a ROL of 110mm the Heat input value would be 2.69KJ/mm d) both a and b are correct 37)

a standard radiographic films test cannot adequately detect a) porosity in the weld b) slag inclusions in the a weld c) laminations in rolling plate adjacent to the weld d) lack of root penetration in a weld

38) A 20% reduction in area in the through thickness direction will indicate resistance to which of the following problems a) weld decay b) solidification cracking c) lamination d) lamellar tearing

39) HV10 is related to which of the following surveys a) Vickers hardness test b) Rockwell hardness test c) brinell hardness test d) flux hardness test 40) In plain carbon steel which of the following has the greatest effects on the materials hardness a) carbon b) molybdenum c) silicon d) manganese 41) which of the following statements is true a) PT cannot be continually repeated on the same component b) MPT only works on austentic stainless steel c) RT cannot reveal volumetric defects d) UT cannot reveal planar defects perpendicular to the beam direction 42) Tack welds a) are always welded with E6012 electrodes b) preheat is’nt generally required as they will be removed c) preheat should be applied in according with the WPS D) none of the above 43) inter pass temperature A) exceeding the maximum interpass temperature may cause a reduction in toughness b) exceeding the maximum interpass temperature may cause an increase in toughness c) inter pass temperature has no effect on toughness d) exceeding the maximum interpass temperature may result in excessive hardness 44) The final documentation after welding should contain which of the following details a) material test certificates b) inspection test reports c) as-built drawing d ) all of the above

45) The preheat temperature is a) the temperature above which welding cannot done b) the temperature below which welding can be done c) the minimum temperature above which welding can be done d) none of the above 46) post inspection cleaning or further treatment of components is not required in which of the following methods a) DPT b) UT c) RT d) MPT 47) A medium carbon steel weld should be inspected a) as soon as it is safe to do so b) When the welder is finished c) 48 hours after completion d) After NDT examination 48) hydrogen cracking a) can be avoided by welding in a vaccum b) can be stopped by using a low hydrogen process c) only the TIG process can prevent it d) only using basic electrodes will eradicate it 49) who decides if the weather conditions are suitable for welding A) welding engineer b) welder c) welding inspector d) Third party inspector 50) Are welders were permitted to change the current during the welding operation a) yes, the current selection is up to the welder b) no, the current selection is up to the welding supervisor c) no, the current must never be altered d) None of the above

51) Before starting to weld with basic electrodes ,you find out that the baking oven on the shop floor is not operating. In such situation as a welding inspector your action should be a) to stop welding until the oven is operating and the electrodes were baked correctly b) to proceed with welding to save time until the oven is operating c) to report to the management when you have the time and await their advice d) to suggest using an alternative electrode 52) NDT a) UT can detect all defects in materials less than 10 mm thick b) RT is best for finding lamellar tearing c) UT using a compression probe is preferred for finding lack of sidewall fusion when compared to radiography d) none of the above 53) with respect to transverse tensile testing of a butt welded coupon. which is true? a) the Rm is recorded b) the percentage elongation of a welded joint is 25% c) the toughness of weld metal is 60 J d) the depth of notch is 2mm 54) 400 vickers pyramid number for C-mn steels is A) is the hardness value which suggest that HICC to occur B) is a yield value for electrodes covered by EN 2560 c) is the lowest lighting level for VT to carried out d) is a typical Re value for C-mn steels. 55) who is permitted to do production welding A) an appropriately qualified welder b) any welder designed by welding engineer c) a welder who has worked on similar project d) a trained welder for JLO45 56) An approved wps indicates a pre heat of 250c. this means what? a) the job should be heated once to this temperature and then allowed to cool before welding b) the job should be heated to this temperature before welding c) the job should be preheated every 3-5 weld runs per convenience and then allowed to cool. d) All of the above

57. GMAW pipeline welding machines ? a. On C-Mn steel pipelines always use flux core wire. b. On C-Mn steel pipelines always use 100% pure argon. c. On C-Mn steel pipelines normally use solid wire. d. Are seldom used on C-Mn steel pipelines. 58. Corner joints, a. Are always butt weld. b. Are normally fillet weld. c. Are normally compound weld. d. Are normally plug weld, but could be butt weld. 59. WPS, a. Should be available to welding inspectors, NDT personnel and welding personnel. b. Should always have a supporting WPQR. The WPQR should always be available to welding inspectors and NDT personnel. c. Both a and b are correct. d. None of the above. 60.TIG welding ? a. Generally requires protection against contamination via a basic flux. b. Generally use a consumable electrode. c. Can be used on both DC and AC current. d. Is not normally used for welding 316L steel.  

1. d 2. c 3. b 4. b 5. c 6.  b 7. d 8. d 9. c 10. a 11. c 12. d 13. c 14. d 15. b 16. d 17. d 18. b 19. d 20. a

21. d 22. b 23. c 24. b 25. b 26. b 27. b 28. c 29. d 30. d 31. d 32. d 33. c 34. a 35. b 36. c 37. c 38. d 39. a 40. a

41. a 42. c 43. a 44. d 45. c 46. c 47. b 48. b 49. c 50. a 51. a 52. d 53. a 54.a 55. a 56. b 57. c 58. b 59. a 60. c

1.BS EN 7018 as AE 3 3 4 where ‘A’ is denoted as a) Hardness only b) Impact only c) Yield Strength & Impact only d) Tensile Strength & Impact only 2. Load 180KN, 40mm length, 80mm thickness. Calculate UTS & Elongation? a) 50 N/mm2 & Elongation 20% b) 56 N/mm2 & Elongation cannot be found c) 56 N/mm2 & Elongation can be found d) 56 N/mm2 & Elongation 10% 3. Tungsten coated with slightly thorium is used as a) DC(+ve) electrode used for Aluminium only b) Electrode used with balled end c) Thorium coated can be used for all metals d) AC electrode can be used for alloyed elements 4. In plasma, 8-18” Austenitic Stainless Steel can be used as? a) Alloyed Steel b) Carbon Steel c) Stainless Steel d)All of the above 5. Cross country pipeline is going to be laid. To find the root defects, which NDT will you go for? a) MPI b) UT c) RT d) both (b) & (c) 6. You found high hydrogen content after the deposition of weld, it is caused by a) Hydrogen electrode not treated properly b) 7011 electrode have low hydrogen c) Cellulose electrode d) Rutile covered with TiO2 7. E 46 0 1Ni where 0 represents a) 47o J at +20o C b) 47o J at 0o C c) 47o J at -20o C d) 47o J at -10o C 8. Below which is the correct terminology? (Contact Tip Work piece Distance) a) CTWD increases, Voltage decreases b) CTWD decreases, Current decreases c) CTWD decreases, Voltage increases d) CTWD decreases, Current increases 9. In MAG inductance provides control over a) Spatter b) Voltage c) Current d) Droplets 10. Spatter is caused by a) Damp electrodes b) Excessive current c) Change in electrical settings d) All of the above 11. Solidification crack occurs in Carbon Manganese Steel. To avoid this? a) PWHT b) Reduce the carbon content in the weld metal c) Copper inclusion in the weld metal d) None of the above

12. In Magnetic Particle Inspection we can found? a) Internal flaws b) Inter-run fusion c) External flaws d) All of the above 13.PRODS related to a) PRODS with UT b) PRODS with MT c) PRODS with Eddy current d) PRODS with RT 14. Lamellar Tearing occurs more in a) Tee – joint with one sided weld b) Tee – joint with both sided weld c) Single V – Butt weld d) Tee – joint with compound weld 15. Pick out the ODD one out? a) HOT cracks b) HICC c) COLD cracks d) REHEAT cracks 16. Hydrogen content level should not be for inducing a crack? a) < 5ml b) > 15ml c) < 25ml d) > 25ml 17. According to BS EN ISO 17637 Visual Inspection? a) Require minimum 350 lux b) Recommends minimum 500 lux c) As same as for DPI & MPI Visual Inspection d) All of the above 18. Welding procedure approval? a) BS EN 2560 b) BS EN 287 c) BS EN 22553 d) BS EN 288 19) Sensitization in Austenitic Stainless Steel means? a) Formation of Iron carbides b) Formation of Chromium carbides at boundary region c) Formation of Chromium carbides d) None of the above 20. Symmetric fillet Weld? a) The weld is flat b) No need of leg length dimension c) We can omit the other line d) Length is specified on the left side 21. Which one is possible? a) Butt with edge b) Slot with lap c) Plug with edge d) Tee with corner 22. In MIG, the included angle for Aluminium? a) 35 degree b) 60 degree c) 120 degree d) 90 degree

23. A welding procedure qualified for PA can be used for PF position? a) PWHT is not mentioned b) Weld metal tensile strength is above 70,000psi c) Impact value is required d)none of the above 24. Constant Current? a) Current remains constant b) Ampere slightly varies c) Arc length automatically adjusted d) Current drastically raised when there is change in voltage. 25. If Weaving is reduced? a) Higher heat input b) Higher hardness c) Higher toughness d) All of the above 26. If carbon equivalent value is increased? a) Hardenability b) Weld ability c) Higher preheat d) Lower preheat 27. E7018 electrode should be a) Dried up and use for welding b) Be baked at 3500 for 1 hr. c) Be baked at 1500 for 1 hr. d) Directly used for welding 28. For Carbon Manganese Steel? a) Ceq should be 0.36% b) Ceq should be 0.48% c) Ceq should be >0.48% d) Ceq should be 15 ml < 25 ml (c) > 10 ml < 15 ml (d) > 5 ml < 10 ml

225) Which of the following defects would show up as light indications on a radiograph? a. Slag inclusions and copper inclusion b. Tungsten inclusions and excessive root penetration c. Cap undercut and root piping d. Excessive cap height and incomplete root penetration

226) Cellulose electrodes have which of the following properties? a. Viscous slag, large volumes of shielding gas and UTS values above 90,000 PSI b. Large volumes of shielding gas, hydrogen contents>15 ml per 100g of weld metal deposited and should be never baked c. Large volumes of shielding gas, high spatter contents and hydrogen levels < 15 ml per 100g of weld metal deposited d. High spatter contents ,high deposition and large volumes of gas shield

227) When ac only is required for welding, the power supply unit is almost always: (a) A transformer, rectifier and a means to change the current (b) A transformer, inverter and a means to change the current (c) A rectifier, alternator and a means to change the current (d) A transformer or alternator and a means to change the current

228) Which of the following statements is true when using a flat characteristic power source? (a) The electrode is always dc –ve (b) The shielding is always pure argon (c) The wire feed speed remains constant (d) The electrode extension will have no effect on weld quality

229) When welding a double V butt joint with SAW process the presence of centerline porosity may be due to: (a) Damp flux (b) Contaminated joint preparation (c) Incorrect stick out lengths (d) All of the above

230) In accordance with BS 5135 what is the recommended minimum time allowed for the pre heat temperature to equalize? (a) 2 Min for each 25 mm of parent material thickness (b) 5 Min for each 25 mm of parent material thickness (c) 2 Min for each 50 mm of parent material thickness (d) 5 Min for each 50 mm of parent material thickness

231) Which of the following units is used to express heat input? A.joules B.N/mm2 C.J/mm2 D.KJ/mm

232) Defects outside of the limits specified in a standard should always be.... a. repaired b. reported to a senior person c. assessed along the with other defects d.all of the above

233) Which of the following is applicable of the heat treatment process of normalizing C-Mn steel A.it always carried out below the lower critical limit B.it is carried out to ensure the material has maximum tensile strength C.it is carried out to ensure the material is to maximum ductility and malleability in preparation D.it is carried out at approx. 910C for the purpose of grain refinement

234) An transverse tensile test from a weld procedure approval record test plate is used to measure a. the tensile strength of the weld b.the tensile strenth of the joint c.the stress strain characteristics of the weld d.thestres strain characteristics of the joint

235) An austenitic stainless steel may suffer: a. weld decay b. sensitisation c. solidification cracking d. all of the above

236) Which of the following is the odd out? (a) Neon (b) Xenon (c) Argon (d) Nitrogen

237) What kind of steel is used for making filler rod? (a) Killed steel (b) Rimming steel (c) Carbon steel

238) Welding process that use flux are sometime considered to be better than non fluxed processes because A.fluxes may be dried to give low hydrogen level B.fluxes may have higher tolerance to surface contamination C.theyare good for welding good reactive metals D.all of above

239) What is the maximum allowable HI/LO for 8 mm thick material if the following is applied.Linear misalignment is permissible is 10%of ‘t’ if the maximum 2mm A. 0.8 mm B.2 mm C. 8.0 mm D. it cannot be sentenced as an other side is shown by the symbol

240) Which of the following abbreviations is the odd one out? A.GMAW B.MMA C.SMAW D.GTAW

 

181. c 182. d 183. c 184. a 185. d 186. d 187. b 188. d 189. b 190. b 191. d 192. b 193. d 194. b 195. d 196. a 197. c 198. d 199. b 200. d

201. c 202. b 203. c 204. c 205. c 206. d 207. b 208. b 209. d 210. b 211. b 212. a 213. a 214. b 215. c 216. a 217. d 218. b 219. a 220. d

221. a 222. c 223. c 224. d 225. b 226. b 227. b 228. c 229. d 230. a 231. d 232. a 233. d 234. b 235. d 236. d 237. b 238. d 239. a 240. b

1. When hydrogen control is specified for a manual metal arc welding project the electrode would be A. Cellulosic B. Iron oxide C. Acid D. Basic 2. when MMA welding being carried out on an open construction site, which group of welders are most likely to require continuous monitoring A. Concrete shuttering welding teams B. Pipe welding teams C. Plate welders D. Plant maintenance welders 3. The steel composition in a structural contract is changed from 0.15% carbon 0.6% manganese to 0.2% carbon 1.2% manganese. This might influence the incidence of A. Porosity B. Cracking in weld area C. Undercut for fillet welds D. Lack of fusion defects 4. Preheating a carbon steel MMA welding is carried out to minimise the risk of A. Scattered porosity B. Worm hole porosity C. Parent metal cracking D. Lack of penetration 5. In UK practice, BS 499 specifies that the drawing dimension quoted for a fillet weld is the A. Leg length B. Throat thickness C. Weld width D. Actual throat thickness 6. During CO2 welding the arc length is most likely to be affected by A. The wire diameter B. The current return connection C. The gas flow rate D. The torch to work angle 7. Preheating for arc welding applies to A. Assembly welding only B. Assembly and tack welding C. Joints over 25 mm thick only D. Cruciform welds 8. Which one of the following statements is correct A. Preheating increases hardness B. Preheating increases cooling C. Preheating increases dilution D. Preheating increases shrinkage stresses 9. You see a welder using an oxy acetylene flame with a long feathered inner cone. What would be the effect of this on a carbon steel A. The weld would be hard and brittle B. The weld could be too soft C. There will be no effect on the weld D. The weld will have under cut

10. A fabrication procedure calls for fillet welds to be blended in by grinding. This influence A. HAZ cracking B. Fatigue life C. Residual stress D. yield strength 11. One of the main reasons for excluding hydrogen from the weld metal is to prevent the weld from A. Cracking B. Cooling slowly C. Cooling quickly. D. Expanding 12. when a metal regains its original shape when a stress acting upon it is removed the metal is said to have A. Ductility B. Plasticity C. Malleability D. Elasticity 13. Proof stress is used when non ferrous metals are under going tensile tests to determine the equivalent A. Tenacity B. elasticity C. yield strength D. Tensile strength 14. To test a component for vibrational loading a suitable mechanical test would be A. Impact B. Tensile C. compressive D. Fatigue 15. The main reason for pre heating medium and high carbon steels before cutting by oxy fuel cutting gas is A. Improve the quality of cut B. Increase the cutting speed C. Refine the grain structure D. Prevent hardening and cracking 16. The predominant structure of an hyper eutectoid steel that has been quenched at above its upper critical point will be A. Austenite B. Martensite C. Troosite D. Sorbite 17. When weld metal refinement takes place in a multi run deposit it is known by the term A. Weld annealing B. Weld refining C. Weld normalising D. Weld recrystallisation 18. One advantage of metal gas arc shielded welding is A. Can be used in draughty locations without protection B. Produces a deposit of low in hydrogen content C. Any welding position can be welded with spray transfer D. fine spray at nozzle restricting gas flow 19. In the welding of a butt joint from one side the profile of the root bead is controlled by A. Root face B. Bevel angle C. Root gap D. All of the above

20. In MMA the slags produced can be varied to suit the welding position. Which type of slag would be required for welding in the HV position A. Fluid B. Viscous C. Semi fluid D. None of the above 21. The weld metal deposits of MMA electrodes achieve its mechanical strength through A. The core wire B. The flux coating C. Iron powders in the flux coating D. none of the above 22. what constituent is needed in the coating of an electrode to prevent the formation of porosity in the welding of a rimming steel A. Iron powders B. Calcium fluoride C. Silicon D. Calcium carbonate 23. A steel described as QT will have improved tensile properties because it has A. Had control of chemical composition B. Been heat treated C. Been quality tested D. Been vacuum melted 24. In submerged arc welding the use of excessively high voltage would result in A. Insufficient flux melting B. Excessive flux melting C. slag removal difficulties D. Spatter 25. Cellulosic electrodes are often used when welding the root pass of pipes in the field because A. Hydrogen control is needed B. There are iron powders in the electrode C. Higher arc voltage can be obtained D. Shorter arc length can be obtained 26. which of the following process uses the keyholing system of fusion A. Friction welding B. Diffusion bonding C. Electron beam welding D. Autogenous TIG welding 27. Welding procedures may require welds to be deposited at a controlled rate of heat input A. Have poor profile B. Have larger grain size C. Have high hardness in the HAZ D. Have low elongation properties 28. Incomplete root fusion would certainly be caused by A. Linear misalignment B. Incorrect tilt angle C. Differing root face width D. All of the above 29. You notice a very veed ripple shape.This is most likely caused by A. Poor consumable choice B. Welding position C. Excessive travel speed D. All of the above

30. Undercut is caused by A. Excessive amps B. Excessive volts C. Excessive travel speed D. All of the above 31. Undercut is normally assessed by A. Depth B. Length C. Blending D. All of the above 32. When visually inspecting a fillet weld it would normally be sized by A. Leg length B. Actual throat thickness C. design throat thickness D. Both A and C 33. MIG tends to be susceptible to lack of fusion problem. this is because of A. Poor maintenance of equipment B. Incorrect settings C. Poor inter run cleaning D. All of the above 34. Which of the following is a suitable shielding gas for FCAW of stainless steel A. 100% argon B. 70% argon + 30% He C. Argon + 5% Hydrogen D. Argon + 20% CO2 35. The maximum hardness in the HAZ of a steel will increase if the A. Heat input is increased B. CEV is increased C. Joint thickness is decreased D. All of the above 36. When welding thin plate distortion can be minimised by A. Using back step welding B. Minimising weld volume C. Using bridge tacks D. All of the above 37. What is the leg length of a fillet weld A. The distance from the weld face to the penetration B. The distance between the two toes C. The distance from the original root to the toe D. The distance from penetration to the weld toe 38. The term duty cycle refers to A. The shift pattern of inspection staff B. A monthly occurence involving outage time C. Output capability of a welding plant D. Component life expectancy 39. plug welds are normally used to weld plates that A. Overlap B. Have holes through both plates C. Are to be 100% water tight D. Have P-shaped lifting lugs attached

40. which of the following materials is most likely to require the highest levels of cleaning immediately prior to welding A. Low carbon steel B. Carbon manganese steel C. austenitic stainless steel D. All about the same 41. When visually inspecting the root of the pipe weld in a single v butt with the cap ground flush.you have identified root concavity which has a depth of 0.5 mm.The application standard you are using contains the following statement: Root concavity shall be acceptable provided the density of the radiographic image doesnot exceed that of the parent material A. you must have the pipe radiographed B. Sentencing may only be performed by a qualified radiographic interpreter C. It should be rejected D. You should accept as there is no radiograph to view 42. which of the following statement is correct regarding gas welding low carbon steel A. It will give a low heat input B. Acetylene or propane are normally used as fuel gases C. A low skill level is required to produce sound welds D. It may be used for autogenous welding 43. Which is the correct statement A. Copper inclusion are usually grouped with slag and other solid inclusions for sentencing purposes B. Undercut lengths at both weld toes in the same longitudinal location are added together for sentencing purposes C. A measurement for maximum penetration height is always specified in application standards D. None of the above 44. The abbreviation PQR is otherwise known as A. Provisional Qualification record B. WPAR C. Personnel Qualification record D. WQT 45. flame cut edges would normally be required to be ground back to a distance specified in a procedure because A. If the HAZ is left on the prep it may result in weld decay in service B. The HAZ would have become sensitised C. There is a strong potential for hardening in this region D. To reduce weight loading on the completed structure 46. Which of these statements related to carbon steel is false A. High heat input result in high hardness B. High heat input may result in large grains C. Loss of toughness may result from weaving D. Toughness may be restored by normalising 47. during visual inspection of a fillet weld with even leg lengths of 15 mm and throat measurement of 9 mm. A cross section is not available. The weld profile is A. Concave B. Convex C. Mitre D. Not able to determined 48. Which of the following always occurs in the parent metal A. Hydrogen cracks B. Laps and laminations C. Centre line cracks D. Porosity

49. You should always refer to the higher authority for guidance when A. Cracks appear during welding B. The welder will not follow your instructions C. Instructions are missing in the specification or contract documents D. All of the above 50. Increasing the arc energy input of a welded joint will A. Increase the strength of the joint B. Increase the toughness of the joint C. Increase the grain size of the weld and haz D. decrease the width of the haz 51. Which of the following in an inspection point in SAW A. Flux mesh size B. Gas type C. tungsten size D. gas flow rate 52. Why is hot pass so called A. Because it is applied at a high amperage B. Because it is applied when the root is still hot C. Because it could cause hot shortness D. Because it heat treats the root 53. Cold lap is another term for A. Lack of fusion B. Low amperage C. Undercut D. hydrogen cracking 54. Preheat prior to welding A. Must always be carried out B. Need not be carried out if post heat treatment is to follow C. is always carried out using gas flame D. All of the above E. None of the above 55. The main purpose of the black light for fluorescent PT A. To magnify indications B. To make the indications visible C. To develop indications D. To speed up inspection 56. The correct term for a joint prepared on one component only is A. A bevel butt B. A 'J' butt C. A 'K' butt D. All of the above 57. Which of the following statement is true A. The core wire in a MMA electrode has a higher melting point than the flux B. Electrode dc +ve is used when welding with the GMAW process C. The HAZ of the C-Mn steel weld usually has the lower tensile strength than the weld D. All are true 58. which of the following weld process would you expect to use a collet A. TIG B. MIG C. MMA D. All of the above

59. which of the following is a method to accurately measure the root radius of a charpy or izod specimen A. Use a pyrometer B. Use verniercalliper C. Use a machine called shadow graph D. Use a densitometer 60. sodium silicate in MMA electrode flux A. Stabilises the arc B. Binds the ingredients of flux C. Forms slag D. All of the above

1. d 2. b 3. b 4. c 5. a 6. b 7. b 8. c 9. a 10. b 11. a 12. d 13. c 14. d 15. d 16. b 17. b 18. b 19. c 20. b

21. b 22. c 23. b 24. b 25. c 26. c 27. b 28. d 29. c 30. d 31. c 32. a 33. d 34. b 35. b 36. a 37. c 38. d 39. a 40. d

41. a 42. d 43. c 44. a 45. c  46. a 47. a 48. b 49. d 50. c 51. a 52. b 53. a 54. e 55. b 56. d 57. a 58. a 59. c 60. d

1.Flame cut preperations during welding increase the likelihood of a. cracking b. misalignment problems c. Inclusion d. All of the above 2. Macroscopic examination requires any specimen to be inspected a. Once, after etching b. Twice before and after etching c. Using a microscope d. None of the above 3. A weave technique may give rise to a. Better profile b. Improve toe blending c. Improved ripple shape d. all of the above 4. The main cause of porosity is A. Poor access B. Loss of gas shield C. Dirty materials D. All of the above 5. If pipe bores are not matched correctly it can result in A. Lack of root penetration B. Incorrect gap setting C. excessive root faces D. Over heating during welding 6. A correctly made tack weld should slope from the middle of the ends in order to A. Aid better penetration at join up B. Prevent porosity at join up C. Reduce the electrode size required D. Reduce the overall consumable consumption 7. Which of the following destructive test is not required for welder approval A. Bend test B. macro examination C. Impact test D. Fracture test 8. Too large a diameter of filler rod should not be used to make a welded joint because A. excess reinforcement profile will be difficult to obtain B. The included bevel angle will have to be reduced C. Root fusion may be difficult to obtain D. The gap setting will have to be changed 9. The main reasons why all the adhering scale should be remove when the pipe end preparation is made by oxy gas cutting is? A. Oxidation of the weld metal is minimised B. The speed of welding is minimised C. Pipe bore alignment is easier D. Reduction of weld deposit is prevented 10. When TIG welding with stainless steel which of the following should be used A. Alternator B. AC transformer C. DC generator D. Constant potential rectifier

11. In the examination of a welded aluminium joint macro etching may reveal A. Lack of inter run penetration B. Carbon pick up C. Weld decay D. Micro cracks 12. Which physical test is more likely to reveal HAZ embrittlement A. Transverse tensile B. All weld tensile C. Root bend D. Charpy impact 13. submerged arc welds made with recycled flux are reliable to A. Porosity B. Coarse grain size C. Undercut D. Incomplete penetration 14. Preheating and inter pass heating are used primarily for A. Aiding fusion B. Reducing hydrogen content of weld preparation prior to welding C. ensure a fine grain size D. Slow down the cooling rate after welding

15. Which electrode coating gives the most voluminous gas shield A. Rutile B. Basic C. Oxidising D. Cellulosic 16. In SAW which of the following width to depth ratios would be likely to result in solidification A. 1:3 B. 4:1 C. 3:1 D. 1:1

17. The second run in three run butt weld using the stove pipe technique is known as A. Filling run B. hot pass C. Inter run D. Sealing run 18. The purpose of nick break specimen is to provide a test for A. Tensile strength and fracture appearance B. ductility and fracture appearance C. elongation and fracture appearance D. Soundness and fracture appearance 19. A root bend test is used to test the amount of weld A. Ductility B. Elongation C. Hardness D. Penetration 20. What would be observed if a fillet weld were sectioned and macro etched A. the grain of other beads is coarser than the final bead B. The penetration and fusion into the root is very deep C. each bead appears to be distinctly separate from the adjoining beads D. The grain structure remains same in all passes

21. The different grain structure between the weld deposit and the base metal can be determined by A. Face bend test B. Root bend test C. Hardness test D. Etching test 22. Pipe welding codes are set up by A. Welding engineers B. State governments C. Association, societies, insurance companies, manufacturers and military D. Construction unions 23. Which is the most common failure in root bend test A. Too high a current setting B. Too long a pause in the down cycle of the weave C. Lack of fusion and penetration D. Too high a travel speed 24. The first sub zone in a heat affected zone of the parent material nearest weld deposit will consist of A. Large crystal grains B. Small crystal grains C. elongated crystal grains D. Distorted crystal grains 25. The type of crystal normally found in a single run arc weld in the as welded condition is A. Equi axed B. Poly crystalline C. Dentrite D. Columnar 26. When a steel is heated to above it's upper critical temperature, the structure produced is A. Martensite B. Austenite C. Pearlite D. Sorbite 27. If a low carbon steel pipe has to carry a liquid care must be taken when making the butt welds to ensure penetration is not excessive because A. Reduces the flow rate of the liquid B. May increase the rate of corrosion C. Can contaminate the liquid D. May cause excessive pipe wear 28. Columnar growth takes place when a metal is A. Cold B. Losing heat C. being heated D. Being rolled 29. What happens to the mechanical properties of the steel if the carbon content is increased to 0.5% A. Material becomes softer B. Malleability is increased C. Tensile strength is increased D. Ductility is increased 30. when a metal is subjected to a fluctuating load,a condition of a cyclic stressing can be set up which eventually can result in structural breakdown known as A. Tensile failure B. Fatigue failure C. Yield failure D. Shear failure

31. Percentage elongation of a metal undergoing a tensile test is a measures of A. Elasticity B. Plasticity C. Ductility D. Malleability 32. When depositing weld metal fusion will takes place at the sides of the joint resulting in an admixture between weld metal and parent metal.this alloying effect is known as A. Diffusion B. Absorption C. Dilution. D. Migration 33. cold cracking is most likely to occur in weldment A. Rate of cooling is too fast B. Rate of cooling is too slow C. It lacks ductility at high temperature D. Impurities are present at their grain boundaries 34. Argon purging in the root side is necessary in the TIG process of stainless steel to A. obtain full penetration B. Obtain full fusion C. Avoid porosity in root D. Obtain a satisfactory weld surface finish 35. which one of the following is not helpful in minimising angular distortion during welding? A. Use of double V prep using balanced weld technique B. Pre setting of work pieces C. Applying post weld heat soak D. Changing from a single V prep for thick material 36. Which electrode deposits weld metal with the greatest ductility and resistance to cracking A. Rutile B. Cellulosic C. Basic D. Oxidising 37. In positional MMA welding on pipe work, welder are having difficulty in obtaining good capping profiles when welding in the overhead position. Would you A. Advise them to increase the current B. Advise them to increase the voltage C. Ask for a new welding team D. Suggest to use of a smaller diameter electrode 38. You have a macro section of a T butt joint that shows a step like defect lying outside the visible HAZ.what would be the defect? A. HAZ cracking B. Toe cracking C. laminations D. Lamellar tearing 39. The most common type of failure associated with sharp fillets,notches and undercuts is A. Crystallisation B. Fatique C. Corrosion D. brittle fracture 40. Low alloy steels having a high carbon equivalent before welding will require A. A reduction in carbon content B. High pre heat temperature C. Low pre heat temperatures D. No pre heating

41. The electrodes for welding low alloy steels should be A. Used with a low current value B. One size larger than for general purpose electrodes C. Used for welding in a flat position D. Heating in a drying oven before use 42. An electroslag weld requires what heat treatment to improve the grain structure A. Annealing B. Stress relieving C. Normalising D. Quenching and tempering 43. Weld decay in stainless steels can be avoided by A. Stress relieving B. Slow cooling after welding C. Addition of more manganese to steel D. Addition of titanium to the steel 44. Cold cracking is most likely to occur in a weldment if A. The rate if cooling is too fast B. The rate if cooling is too slow C. It lacks ductility at low temperature D. Impurities are present at its grain boundaries 45. The overall length of a pipeline can be affected by A. Transverse shrinkage B. Longitudinal shrinkage C. Angular shrinkage D. Circumferential shrinkage 46. The permanent backing material for MMA welding of low carbon steels should be made from A. Copper B. low carbon steel C. QT steel D. Cast iron 47. Which of the following defects would you not expect to find by visual inspection of welds A. Linear slag inclusions B. Undercut C. Overlap D. Linear misalignment 48. Which of the following defects is more common to welds deposited by CO2 welding than welds deposited by MMA A. Slag inclusions B. Excess penetration C. Lack of sidewall fusion D. tungsten inclusion 49. Which of the following is likely to give the highest impact strength in ferritic weld metal A. Cellulosic electrodes B. submerged arc with basic flux C. Spay transfer CO2 welding D. Basic coated MMA electrodes 50. You suspect that ferritic steel plates contains cracks in the prepared edges.what NDT method would you use to check this A. Radiography B. MPT C. PT D. UT

51. The most serious defect types are A. Planar B. Cracks C. Lack of fusion D. All of the above 52. When referring to MIG welding the shielding gas would be A. Argon B. Argon+1% oxygen C. Argon+20%CO2 D. None of the above 53. A basic electrode would normally be A. Have superior mechanical properties B. Require baking before use C. Not to be used on low carbon steels D. Both A and B 54. carbon equivalent values are used to determine A. weldability aspects B. Crack sensitivity aspects C. Typical mechanical properties D. All of the above 55. A tensile test will assess A. Impact values B. Stress C. Strain D. Both B and C 56. The correct term for cap height A. reinforcement B. Cap profile height C. Excess weld metal D. All of the above 57. A welding inspectors main attributes include A. Knowledge and experience B. Literacy C. Honesty and integrity D. All of the above 58. Hot shortness is a term used to indicate A. Lamellar tearing B. Solidification cracking C. Hydrogen cracking D. None of the above 59. Hydrogen controlled electrodes were developed principally for A. The prevention of porosity B. The prevention of cracking C. The enhancement of arc voltage D. Their ease of arc starting 60. Under normal contract conditions weld procedure approval tests for pipework are A. Mandatory B. Depend on site and weather conditions C. Depend upon contractors confidence in his procedure D. Only required when MMA welding is used

1. d 2 .b 3. d 4. d 5. a 6. a 7. c 8. c 9. a 10. c 11. a 12. d 13. a 14. b 15. d 16. a 17. b 18. d 19. a 20. c

21. d 22. c 23. c 24. a 25. d 26. b 27. a 28. b 29. c 30. b 31. c 32.c 33. a 34. c 35. c 36. c 37. d 38. d 39. b 40. b

41. d 42. c 43. d 44. a 45. b 46. b 47. a 48. c 49. b 50. b 51. d 52. a 53. d 54. d 55. d 56. c 57. d 58. b 59. b 60. a

1.

Which of the following welding process would you expect to give the highest heat input when using typical parameters ? a. Shielded metal arc welding b. Manual Metal arc welding c. Submerged arc welding d. Tungsten Inert gas welding

2.

A mitre fillet weld has a design throat thickness of 12 mm. What is the leg length ? a. 19.6 b. 12.8 c. 16.8 d. 10.8

3.

The number 136 is shown at the tail end of a weld symbol reference line. According to BSEN 22553 what does the number indicate ? a. FCAW b. MIG/MAG c. MMA d. TIG

4.

Which term has a different meaning from the other ? a. Crown b. Cap height c. Reinforcement d. Weld profile

5.

In MIG/MAG welding, inductance helps control, a. Spatter b. Voltage c. Current d. Travel speed.

6.

A typical temperature for tempering carbon manganese steel ? a. 850 – 920 C ̊ b. 550 - 700 ̊C c. 500 - 520 C ̊ d. 950 - 980 ̊C

7.

Weldment in C-Mn steel made up of high heat input may show ? a. Longer HAZ b. Wider HAZ c. Narrow HAZ d. Deeper HAZ

8.

When measuring arc voltage, where should the measuring instrument be kept ? a. Further away from the welder b.As close to the return as possible c.Further away from the return load d.As close to the welder as possible

9.

An MMA electrode is designed as E430R type, what does “0” mean ? a.47 J at -20 ̊C b.47 J at 0 ̊C c.47 J at +20 ̊C d.47 J at -10 C ̊

10.

The main reason that hard stamping is prohibited in some structure that it may cause ? a.Work material b.Corrosion initiation c.Failure initiation point d.Thinning of the material

11.

Plasma cutting can be applied to, a. Any material b. Aluminium alloys c.Stainless steel d.Carbon steel

12.

When using a welding procedure specification what other document is in conjunction with the procedure ? a.PWPS b.WQT c.WPQR d.WPTR

13.

A typical included angle used for MIG welding of aluminium, a.35 ̊ b.120 ̊ c.60 ̊ d.90 ̊

14.

Which of the following has the greatest effect on the finished profile ? a.Included angle b.Torch angle c.Open circuit voltage d.Polarity

15.

Tungsten electrodes used for TIG welding of C-Mn steel contains a small percentage of, a.Silica b.Cerium c.Iridium d.Titanium

16.

A pipeline is to be laid across country; which of the following method could be used to detect root defects ? a.MPT b.RT c.UT d.Both b and c

17.

The main reason for preheating is to, a.Remove paint b.Improve the properties in HAZ c.Remove moisture d.Increase hardness

18.

A STRA test will give, a.Percentage reduction area b.Percentage increase in area c.Percentage increase in hardness d.Percentage reduction

19.

What level of diffusible hydrogen is considered as low hydrogen ? a.≤ 5 ml b.> 15 ml c.≤ 20 ml d.> 25 ml

20.

The output characteristics of a typical SAW power source for less than 1000 amps ? a.Constant current b.Constant voltage c.Drooping d.Pulsing

21.

Which of the following standard relates to welding procedure approval ? a.BS EN 2560 b.BS EN 15614 + ASME IX c.BS EN 22553 d.BS EN 287 + ASME IX

22.

According to BS EN 22553 a weld symbol on the dashed line refers to, a. On the arrow side b. In the fish tail c. Double sided weld d. Identification line.

23.

The main purpose of CEV is to estimate ? a. Ductility b. Weldability c. Hardenability d. Malleability

24.

Constant current ? a. It is so called because the current never varies. b. It is used for self adjusting arc process. c. Only varies by a small amperage. d. Requires an AC output.

25.

A STRA test, a. Can give a material elongation and ductility. b. It is used to measure a material’s UTS. c. Is a measure of a material’s proof stress. d. Shows a material’s compressive and tensile property.

26.

During welding you observe that the welder is weaving excessively high, which property will be deteriorated because of this ? a. Percentage elongation b. Impact properties c. Chemical composition d. All of the above

27.

Which of the following cannot be detected by penetrant testing ? a.Internal flaws b. external flaws c.Porosity d.Undercut

28.

From the examination of fracture failure, a ductile failure, a.Black marks b.Smooth surface c.Reduction in area d.Flat rough surface

29.

Which welding process has greatest heat input ? a.FCAW b.TIG c.MAG d.SAW

30.

An electrode is classified to BS EN 2560 as AE 35 3B, what does A stands for ? a.Hardness only b.Yield strength and impact c.Tensile strength and impact d.Impact only

31.

What element may cause carbon steel to suffer cold shortness ? a. Phosphorous b. Martensite c.Manganese d.Silica

32.

In which position would weaving need to be done ? a. PA b. PB c.PF d. PG

33.

Flat characteristics, a.Work on the basis that a large change in voltage equals a small change in amperage. b.Work on the basis that if voltage is changed, amperage automatically changes. c.Work on the principle that if amperage changes voltage automatically changes. d.Work on the basis that if voltage is changed amperage will dramatically change.

34.

Re is a term, a.Used to express maximum elastic point. b.Used to express maximum plastic point. c.Used to express UTS. d.Used to express the elongation value. 35.

Necking, a.Is when the elastic point is reached. b.Is when the proof stress is reached. c.Is when the specimen has gone past its elastic point and moving zone. d.Is the point just before failure.

36.

Transition range, a.Is the point between yield and UTS. b.Is the range between the lowest interpass temperature and interpass temperature where welding can take place. c.Is a range plot in charpy impact testing. d.Is the range curve for hardness testing.

37.

Joule, a.Is used to measure the arc force in MMA welding. b.Is the energy absorbed during impact testing. c.Is the energy used to break a charpy specimen. d.Is considered as a force applied to bend a specimen.

38.

Highest hydrogen levels would be found in, a.A weld carried out with an E6013 electrode. b.A weld carried out with an E6011 electrode. c.A weld carried out with an E6018 electrode. d.A weld carried out with an E431 N1 2RR electrode.

39.

Interpasstemperature ? a. Exceeding the maximum interpass temperature may cause high toughness. b. Exceeding the maximum interpass temperature may cause low toughness. c. Interpass temperature has no effect on toughness. d. Exceeding the maximum interpass temperature may result in excess ______.

40.

Weld decay, a.Caused by excessive amount of iron in the material. b.Can be minimized by specifying steel with lower carbon levels. c.Can be minimized by specifying steel with lower amount of sulphur. d.Both a and b.

41.

Tensile test is considered for, a.Fatigue failure. b.Ductile failure. c.Stress corrosion failure. d.Cyclic load failure.

42.

Hardness testing, a.Is carried out to assess the likelihood of solidification cracking. b.Helps in assessing the susceptibility of HICC. c.Is a quantitative test to help assess equal values of hardness. d.Is carried out during welder qualification tests.

43.

Tack welds, a.Are always welded with 6012 electrodes. b.Preheat is not generally required, as they will be removed. c.Preheat should be applied if in accordance with the WPS. d.None of the above.

44.

7018 M electrode, a.Is classified under EN 2560 and is basic low hydrogen. b.Is classified under AWS A5.5 and is a basic low hydrogen with weld metal of yield strength 70,000 Psi. c.Is classed under AWS 5.5 and suitable for welding in the low temp. d.None of the above.

45.

Preheating, a.Is always carried out around 200 C ̊ . b.Not greater than 50 ̊C. c. Is not generally required on medium carbon steel. d.Delays the cooling rate and improve fusion.

46.

Bend test, a.Requires complex testing equipment. b.May be used for the purpose of welder approval. c.May be used for the purpose of welding procedure approval. d.Both b and c.

47.

An essential variable, a.If changed from the approved WPS, may require a need of new approval. b.Has no effect on the WPS’ consumables. c.Has no effect on the essential welding parameters on the approval. d.None of the above.

48.

Bend testing, a.Is a quantitative test that allows the examiner to assess the susceptibility of lamellar tearing. b.Is conducted on procedure qualifications, as it gives a true indication of ductility and sound weld metal fusion. c.Does not require being done if NDT examination shows no defects whatsoever. d.Allows us to determine the skill of a welder.

49.

Fracture testing, a.Is frequently used to assess the strength of a fillet weld. b.Is frequently used to assess the strength of a butt weld. c.Detects lack of root penetration in fillet welds. d.Both a and b.

50.

Preheating, a.Increases weld zone yield strength and removes moisture. b.Increases weld zone toughness and removes moisture. c.Reduces weld zone UTS value and removes hydrogen. d.None of the above.

51.

NDT, a.In PT a high level of surface cleaning is required to ensure defects are detected. b.In PT the developer is sometimes applied during the dwell time. c.In PT only surface breaking defects are detected. d.Both a and c.

52.

During welding you observed excess spatter, what can be the possible reason ? a.Wrong polarity b.Damp electrode c.High current d.All of the above.

53.

What is the significance of OCV in MMA welding using a transformer ? a.No significance b.It helps in arc initiation c.It decides the current. d.It decides the depth of penetration.

54.

Who decides the necessity of a post weld heat treatment ? a.Senior welding inspector b.Welding inspector c.Welding engineer d.Code of construction

55.

In HICC, which of the following statement is not true ? a.It occurs immediately after welding. b.Cellulose electrodes are ideal to avoid HICC. c.Preheating will increase the chance of HICC. d.All of the above.

56.

Solidification cracking in carbon steel can be prevented by, a.Reducing the level of carbon in the weld. b.Using heavy tack and restraints during welding. c.Doing a PWHT. d.None of the above.

57.

What does sensitization in austenitic stainless steel mean ? a.Formation of iron carbides. b.Formation of chromium carbides along the grain boundaries. c.Formation of chromium carbides. d.None of the above.

58.

Stabilization of austenitic stainless steel means ? a.Heat treating the SS at annealing temperature. b.Adding titanium, niobium to take care of carbon. c.To increase nickel in the composition. d.None of the above.

59.

When is a double wall single image technique used ? a. At all times. b.When the pipe diameter is over 100 mm. c.When the pipe diameter is less than 100 mm. d.None of the above.

60.

A welding procedure qualified in PA position may not be valid if welding needs to be done in PF ? a.The tensile strength of weld metal is more than 600 N/mm2. b.No NDT is done. c.Impact requirements are specified. d.No PWHT is carried out.

1. c 2. c 3. a 4. d 5. a 6. c 7. b 8. d 9. b 10. c 11. a 12. c 13. d 14. d 15. b 16. d 17. b 18. a 19. a 20. b

21. b 22. d 23. c 24. c 25. a 26. b 27. a 28. c 29. d 30. b 31. a 32. c 33. d 34. b 35. d 36. c 37. b 38. b 39. b 40. b

41. b 42. b 43. c 44. c 45. d 46. d 47. a 48. d 49. c 50. c 51. d 52. d 53. b 54. d 55. d 56. a 57. b 58. b 59. b 60. c

1.

For ultrasonic testing which of the following statements is true? a. It is easy to identify all defects b. The equipment should be calibrated before use c. The equipment cannot be automated d. Sound waves will not travel through copper

2.

Which one of these joints would be more susceptible to lamellar tearing? a. U butt b. Vee butt c. Double Vee butt d. Compound weld

3.

Which welding process produces the highest level of hydrogen? A. TIG autogenous B. MIG solid wire C. FCAW D. MMA basic electrodes

4. What is the minimum requirement of stress for hydrogen cracking to be applicable? A. 0.5 N/mm2 B. 0.5 joules of the yield C. 0.5% of the yield of the material D. 0.5 of the yield of the material 5. In MIG/MAG welding which mode of transfer is referred to as non-desired? A. Dip B. Pulse C. Spray D. Globular 6. A butt weld was produced in a 40mm plate: the electrode type was basic and the diameter 4mm. the welding parameters used for one of the welding runs was 190amps, 24volts and a ROL of 120mm/min. what is the energy for that weld run? A. 1.91KJ/mm B. 0.98KJ/mm C. 2.28KJ/mm D. Not enough information to calculate arc energy 7. A tensile test was 120mm long before testing and after testing the length was 135mm long. What is the percentage elongation? A. 20% B. 15% C. 11% D. 12.5% 8. A transverse tensile test was carried out on welding procedure. The cross sectional area of the specimen was 30mm wide and 15mm thick. The maximum load applied was 170KN. What is the ultimate tensile strength value? A. 377 N/MM2 B. 450N/MM2 C. 300 N/MM2 D. 600 N/MM2 9. Which one of these tests is classed as qualitative? A. Hardness test B. Tensile C. Macro test D. Toughness test 10.Which one of these statements are true concerning lamellar tearing? A. As hydrogen levels increase lamellar tearing is more likely B. As material thickness increase ductility decrease making lamellar tearing more likely C. Lamellar tearing occurs in the HAZ D. Lamellar tearing affects all joint types

11. During a transverse tensile test, the first stage the specimen goes through is known as? A. Plastic stage B. Elastic stage C. Deformed stage D. UTS stage 12. When welding on a construction site which type of power source would be considered to be the unsafe? A. 110 volts mains machine B. 440 volts mains machine C. Diesel engine driven welding generators processes D. All welding machines have the same safety factors 13. Which gas is not normally used in TIG welding? A. Argon B. Helium C. Carbon dioxide D. Hydrogen 14. With the DPI method of inspection, what should be carried out prior to applying the penetrant? A. Apply developer B. Wash off excess penetrant C. Apply a thin coat of white contrast paint D. Ensure the surface under inspection is free of all contaminants that may hinder penetrant access to surface breaking flaws 15. The main requirements of TIG welding are? A. B. C. D.

Heat Protection Cleanliness All of the above

16. Which of these tests would most probably be used for welder qualification on a plate butt weld using 13mm low carbon steel? A. CTOD B. Nick break test C. Fracture fillet test D. IZOD 17. When TIG welding the methods of initiation could be? A. Lift arc B. High frequency C. Constant frequency D. Both A and B 18. Which one of the following codes/standards is not a qualification code? A. ASME section IX B. AWS D1.1 C. EN ISO 15614 D. ASME B31.3 19. Solidification cracking takes place in carbon steels? A. After post weld treatment B. In the base metal C. Immediately after welding D. After a few hours 20. Concerning weldability of carbon steels which of the following statements is true? A. Material grade influences weldability B. Increasing carbon content makes welding easier C. Thicker plates can be welded more easily then thinner plates D. All of the above

21. Which of the following arc design is preferred in cyclic loading condition? A. View A B. View B C. View C D. View D

View A

view B

view C

view D

22. To prevent HIC, with increasing CEV what measures may be taken? A. Use higher pre heat B. Use post weld heat treatment C. Use low hydrogen electrode D. All of the above 23. The main problem with solution treatment of stainless steel is that? A. Controlling the rate of the temperature rate B. Controlling the cooling rate C. The length of the soak period D. High risk of distortion 24. Which type of weld would you associate with the joint below A. plug in a T joint B. A plug weld in a edge joint C. A fillet weld in a corner joint D. An edge weld in a lap joint

25. Which of the following welds may be made in open corner joint? A. Plug weld B. Butt weld C. Fillet weld D. Any of the above 26. Reference to any inspection hold point during manufacture will be contained within the? A. Quality manual B. QA procedure C. Quality plan D. Standards 27. Who should have access to the WPS? A. NDT operators B. Inspectors C. Welders only D. Welders and inspectors 28. What is a STRA test? A. Short track risk of area B. Short transverse reduction in area C. Shaved tensile reducing area D. Strength to reduce area

29. Which one of these electrodes produces the highest level of hydrogen? A. Cellulosic electrodes B. Rutile C. Basic D. Iron powder electrodes 30. What course of action should be taken upon finding a welder using incorrect welding consumables? A. report the incident and record all relevant information B. Allow welding to proceed if the workmanship is good C. None if the tensile strength of the consumable is the same as the approved D. Change the electrode for the correct type and continue welding 31. During root welding which of the following would be the main cause of burn through? A. The current is too high B. The root gap is too small in accordance with WPS C. Preheat not used D. Root face is too large 32. The main purpose of preheating is to? A. Remove moisture B. Delay the cooling rate C. Remove hydrogen D. Improve fusion 33. In order to prevent hydrogen cracking which of the following would need to be mainly considered? A. Material thickness B. Welding position C. Carbon equivalent value D. Joint design 34. Cathodic cleaning is used to remove? A. Sign waves B. Oxides C. Surface inclusions D. Low melting point compounds 35. What is the main purpose post flow function on a TIG welding machine? A. Avoid tungsten electrode contamination B. Cool the weld during solidification C. Give the welder time to adjust to welding conditions D. Purge the gas line 36. When using multiple SAW arc systems (twin wires) the arcs often have different polarities or use all AC rather than DC polarity? A. Prevent arc blow between the arcs B. To maximize productivity C. To even out the power factor on the mains supply D. Make it easier to initiate the arc 37. A post weld heat treatment may also be of benefit in minimizing the risk of weld decay; this heat treatment would be called? A. Stress relief B. Normalizing C. Quench and tempering D. Solution treatment over 1000oC 38. The higher the alloy content of steels? A. The lower the tendency for HIC to occur B. The higher the tendency for HIC to occur C. High alloy steels do not influence HIC susceptibility D. None of the above 39. A solidification crack normally occurs where? A) Through the HAZ B) Longitudinal through the weld Centre line C) Transverse through the weld D) Can occur anywhere

40. Who should select the specific welds for NDT to cover 10% contractual percentage required by the specification/code? A) Anyone can select the welds as its just a random choice B) The welder as he knows which welds are likely to produce the least defects C) This will be referenced in the inspection and test plan D) Nobody, as welding is always carried out to a high standard the use of percentage NDT is of no real value 41. After PWHT it has been noticed that a repair must be carried out. How should this be done? A) With the minimum amount of heat input B) Weld, checked and PWHT again C) Defect removed via non thermal process than checked D) Welded and allowed to cool in air 42. After welding sometimes the removal of residual stresses are carried out by heat treatment what is the typical heating range? A) 4500C B) 550-7000C C) 700-8000C D) 850-10000C 43. A typical temperature for normalizing carbon steels is? A) 3000C B) 4000C C) 6000C D) 9000C 44. How do we determine what the correct weld preparation (root gap, root face, included angle) should be? A) By consulting the WPS B) The fabrication drawing will give all the information C) The welder will decide D) The inspector will recommend what is suitable 45. Which standard is used for the basic requirements of visual inspection? A) BS EN 17637 B) API 1104 C) BSEN 7079 D) BSEN 4515 46. What is an essential variable? A) Something essential for welding B) Something that will affect mechanical properties C) Something that varies during welding D) A list of welding condition 47. Why are welding procedures produced? To check: A) Quality B) Mechanical properties C) Welding equipment D) The capabilities of the welders 48. For an all weld tensile test, which of the following is true? A) The specimen is rectangular in cross section B) The specimen contains base metal and weld metal C) The specimen is taken in the longitudinal direction D) The specimen is taken in the Z direction 49. High intensity energy beams are associated with which of the following welding processes? A) Laser B) Electron beam C) Plasma D) All of the above 50. Globular transfer is used in which welding process? A) TIG B) MMA/SMAW C) GMAW/MAG D) SAW

51. In GMAW which type of metal transfer deposits multiple droplets of metal across the arc gap? A) Pulsed transfer B) Spray transfer C) Dip transfer D) Globular transfer 52. In the GTAW process, the use of pulsed current helps in achieving which of the following? A) Electron cleaning effect and penetration B) Controlling heat input and penetration C) Controlling lack of sidewall fusion and heat input D) Controlling spatter and penetration 53. In GMAW process, the use of pulsed current usually results in? A) Globular transfer and dip transfer B) Spray and globular transfer C) An open arc transfer D) None of the above 54.

Tensile testing to EN standards, a. Will give an indication of reduction in area. b. Will only show the elastic range. c. Show how good the welder is. d. Will determine the transition range.

55.

If you observe excess penetration, what is the reason ? a. Incorrect purge pressure. b. Incorrect preheat. c. Excess root grinding. d. Root face is large.

56.

Normalizing, a. On carbon steel is carried out at around 900 ̊C. b. On stainless steel is carried out at around 680 ̊C. c. On carbon steel is carried out at 680 ̊C. d. On SS is carried out at a typical preheat temperature.

57.

Which of the following is correct ? a. On a transverse tensile test specimen the elongation value was recorded at 24%. b. On all weld tensile test specimen the elongation value was recorded at 20%. c. Both a and b could be correct. d. Elongation values are not determined with a crack tip opening displacement test.

58.

Which of the following inspection methods would use fine metal particles suspended in solution ? a. Ultrasonic. b. Radiography. c. Visual. d. MPI.

59.

With regard to excess weld metal in C-Mn steel, which one of the following is false ? a. It is a stress raiser. b. It can lead to lower fatigue life. c. It can lead to brittle fracture. d. It can lead to increased corrosion resistance.

60.

In NDT, a. Radiography is limited to 10 mm thickness and above. b. Radiography can only detect defects which do not have a significant thickness in relation to the radiation beam. c. RT is better than UT for the inspection of 316L materials. d. Both b and c.

1. b 2. d 3. c 4. d 5. d 6. c 7. d 8. a 9. c 10. b 11. b 12. b 13. c 14. d 15. d 16. b 17. d 18. d 19. c 20.a

21.d 22. d 23. d 24. c 25. c 26. c 27. d 28. b 29. a 30. a 31. a 32. c 33. c  34. b 35. a 36. a  37. d 38. c 39. b 40. c

41. b  42. b  43. d 44. a 45. a 46. b 47. a 48. c 49. d 50. c 51. b 52. b 53. d 54. a 55. c 56. a 57. d 58. d 59. d 60.c

1.

Would you consider using a 5 mm electrode for vertical up root runs in 6G (HLO45) fixed position pipe? a) Yes it is compatible b) Yes but this would depend upon the welder skill c) No, it is not the most suitable electrode coating type d) No, the electrode should have been smaller in diameter

2.

A document that is established by consensus and approved by recognized body and provides, for common and repeated use, guidelines, rules, a for activities or their results, aimed at the achievement of the optimum degrees of order in a given context is called a) Normative document b) Regulation c) Specification d) Standard

3.

Which of the following defects are not associated with the MMA (SMAW) welding process? a) Isolated pores b) Lack of fusion c) Undercut d) Tungsten inclusions

4.

In SAW a higher current or in the case of multiple electrode systems. AC is often preferred to: a) Avoid the problem of lack of fusion b) Avoid the problem of excess penetration c) Avoid the problem of arc blow d) Avoid the problem of dilution

5.

On some applications (i.e. Cladding operations) by SAW, DC electrode negative is needed to: a) Reduce penetration and dilution b) Increase penetration and dilution c) Reduce penetration and increase dilution d) Increase penetration and reduce dilution

6.

What is the mode of metal transfer for the TIG (GTAW) welding process? a) Spray transfer b) Globular transfer c) Dip transfer d) None of the above

7.

What would the effect be if the polarity were changed from DC+Ve to DC –Ve? a) None b) Greater deposition rate c) Greater penetration d) Less deposition rate

8.

You notice that a welder is using an unapproved WPS for production tack welding carbon steel, what action would you take? a) Have the tack removed and MPI the weld preparation for cracking b) Nothing as it is only tack welds and they will probably be removed anyway c) Nothing as long as the WPS covered the material type, wall thickness and diameter d) Give him the correct approved one and allow him to continue as long as the welding consumables were the correct type

9.

In welder qualification testing of 20 mm plates, why are side bends used instead of root and face bends? a) They are easier to produce b) The testing equipment cannot handle thick root/face bends c) Root defects are not important for welder qualification d) They give more accurate indications

10.

Mechanical tests are divided I to two areas, identify these from the list below: a) Destructive and non destructive b) Qualitative and quantitative c) Visual and mechanical d) Qualitative and visual

11.

While inspecting a weld on a 100 mm thick high carbon steel plate with a tolerance of + or – 5 mm you notice the weld is visually acceptable, however the parent material has several arc strikes present adjacent to the weld approximately 3 mm deep, what course of action would you take? a) None I am only inspecting the weld b) Recommend that the area be dressed smooth c) Recommend that the area be dressed smooth followed by MPI d) High carbon steel is not susceptible to cracking so I would weld over the arc strikes then blend them

12.

When examining a completed bend test, the angle of the bend was found to be 185 Deg. The testing specification calls for the sample to have been formed through 180 Deg. a) They should be acceptable as the standard refers to minimum forming angle b) The bends should be considered as failed c) New bends should be produced and bent to 180 deg then re-examined d) They should be rejected as the angle is not close enough to be acceptable

13.

In welder qualification testing of 45 mm thick plates, why are side bends used instead of root and face bends? a) They are easier to produce b) The testing equipment cannot handle thick root/face bends c) Root defects are not important for welder qualification d) They give more accurate indications

14.

For the structure termed martensite to form in a C-Mn steel it must first be heated to: a) Just below its lower critical temperature and rapidly cooled b) A maximum temperature of 550 0C then rapidly cooled c) Above its upper critical temperature and slowly furnace cooled d) A full transformation to austenite then rapidly cooled

15.

A main element involved in solidification cracking is a) Chrome b) Molybdenum c) Sulphur d) Silica

16.

Preheats are used on steel joints of high hardenability mainly to a) Slow the cooling rate of the steel b) Removes surface moisture from the joint c) Reduce the formation of surface oxides d) Increase the diffusion rate of hydrogen into the HAZ

17.

Weld Decay will cause which of the following problems a) A reduced resistance to corrosion b) A lower tensile strength c) The toughness is reduced d) The hardness will increase

18.

Why is it essential to clean the surrounding parent metal adjacent to the weld metal made by MMA (SMAW), which is to be ultrasonically tested? a) Sound waves will not travel through weld b) Remove any rust c) The spatter will impade the contact probe and the parent material surface d) Spatter will reflect the back wall echo signal and give indications

19.

Which of the following would not be required to be checked before welding? a) The welding consumables b) The welder qualification c) Calibration of welding equipment d) The workshop humidity

20.

According to AWS 2.4 where does the symbol go for welding on the arrow side? a) Below solid line b) Above solid line c) Depends on the joint d) Always weld other side arrow is pointing

21.

In intermittent fillet welds, BS EN 22553 and AWS 2.4 differ in a) The way of which staggering & show b) The plot distance difference c) Both the above d) None of the above

22.

Root and face bends an 8mm thickness weld require testing. The specimen are cut to 20mm wide the code calls for a 4t bend which one of the following former should be selected for testing. a) 80mm radius b) 80mm diameter c) 32mm radius d) 32mm diameter

23.

One of the factors used to avoid HAZ hydrogen cracking is to reduce the influence of hydrogen by checking the amount of moisture present in the shielding gas by the dew point temperature. The dew point temperature should be__________. a) Above 5oC b) Below 60oC c) Below 30oC d) Above 27oC

24.

Some code require the excess weld metal (Weld cap) on cross weld joint tensile specimens to be flush, this is because. a) Flushed caps will always break in the weld metal b) This is to remove any porosity in the excess weld metal c) It is easier to calculate the cross sectional area of the joint when flushed d) Flushed caps have fewer stress raisers and therefore give a more accurate result

25.

Which of the following commonly used radioactive isotopes has the longest half-life? a) Iridium 192 b) Cobalt 60 c) Thulium 170 d) Yeterbium 169

26.

Which one of these statements is true concerning solidification cracking? a) Only occurs in MMA welding b) Increased depth to width ratio will increase stress c) Never occurs in MIG/MAG welding d) All of the above

27.

Is it always necessary to preheat the base material before welding? a) Not on a sunny day b) Only in accordance with the WPS c) If the equipment is available it must be used d) If using cellulosic rods these will provide enough heat

28.

What does the term WPS mean? a) Weld productivity specification b) Weld production scheme c) Welding procedure specification d) Work productivity standard

29.

Cross sectional area dimensions are shown according to EN 22553? a) To the left of the symbol b) To the right of the symbol c) Under the reference line d) In the tail at the end of the symbol

30.

You find unacceptable welds and reject them, the welding supervisor insists they are acceptable, he signs them off and requests NDT, what action would you take? a) Nothing as he is a welding supervisor and knows a great deal about welding b) Raise the issue with the QC department c) It is not my problem as he has signed them off so I will not be blamed d) Look at the NDT results and if they look reasonable I would accept them

31.

How is preheat for tack welds during assembly and fit-up determined? a) By the welders as they have extensive knowledge b) The fabrication specification/WPS will give the requirements c) The fabrication drawing will give all the information d) Any temperature will do as it is only a tack weld

32.

During Inspection of a fillet weld you notice slag in the toes of the weld, what action will you take? a) As a fillet weld does not need to be strong slag will not be a problem b) Measure the slag if it is less than 3mm it will not be a problem c) Have the welder remove the slag as this could mask any discontinuities d) Tell the welder to leave the slag in as it will add strength to the weld

33.

IN a transverse WELD tensile test, If the break was in the parent material, the sample would be: a) Rejected b) Acceptable if the UTS is equal to or greater than the specified UTS of the plate c) Retested d) Acceptable if the UTS 80-90% of the specified UTS of the plate

34.

Charpy testing is carried out on a welding procedure test plate because? a) It gives an indication of the through thickness ductility (in the Z direction) b) The impact test results can be used to verify that the material has not been adversely affected by the heat of the welding c) It give an indication of the materials elongation properties d) It gives a quick indication of the weld quality for welder qualification tests

35.

When examining a completed bend test the angle of the bend was found to be 175Deg, the testing specification calls for the sample to have been formed through 180 Deg. a) The bend should be considered as failed b) They should be sent to 180deg then re-examined c) They should be acceptable as the reduction in angle is due to material spring back d) They should be rejected as the angle is not close enough to be acceptable

36.

Which one of these values would be more susceptible to lamellar tearing? a) Greater than 20% b) Less than 20% c) 30% above d) They would all be susceptible

37.

Lamellar tearing is a problem in steels which is always associated with a) Sensitization in the HAZ b) Low through thickness ductility c) Hydrogen levels above 15ml/100g of weld metal d) Rapid cooling from above the upper critical

38.

When MMA welding what will be the effect on the weld if the electrode was changed from Ac to Dc-Ve? a) None b) Lower deposition rate c) It would be less penetration or a slight increase in deposition rate d) The arc would become unstable

39.

When reviewing a radiograph of a weld made by the MAG (GMAW) process, you notice a very bright white inclusion in the weld, which of the following best describes this indication. a) Tungsten inclusion b) Spatter on the cap c) Copper inclusion d) It is most likely to be a film mark

40.

What is the greatest disadvantage of radiographic inspection? a) Its inability to size defects accurately b) The physical size of the equipment c) The skill level of the operators d) The harmful effects of ionizing radiation

41.

When welding medium carbon steel plates over 90 mm in thickness would the basic electrodes require any pretreatment before use? a) None if they were in vacuum pack b) None if they were used in a factory c) Heat to 500oC for 2 hours if used outside d) Baked at 150oC for 4 hours prior to use

42.

With which of the following NDE processes is it possible to detect both surface and slight sub-surface defects up-to 2 mm below the surface. a) Visual b) Dye penetrant c) Magnetic particle using DC d) Magnetic particle using AC

43.

A butt weld has been made by MMA in a 50 mm thick impact tested steel plate. The welding electrode used was a basic type, 5 mm diameter. The measures welding parameters for one of the runs was 220 amps, 21 volts, using DC +ve polarity, and a ROL of 270 mm per min. What would be the arc energy? a) Insufficient information given to calculate the arc energy b) 1.54kj/mm c) 1.026kj/mm d) 2.82kj/mm

44.

When using DC + ve polarity, what is the typical OCV? a) 10-40V b) 50-90V c) 100-140V d) 200-240V

45.

When MMA welding what will be the effect on the weld if the electrodes was changed from DC-ve to AC a) None b) It would have been easier for the welder to strike the arc c) It would slightly increase the depth of penetration d) It would give less penetration

46.

You find that contractor has carried out radiography as per 10 % contractual percentage required by the specification / Code. The specification also insists that an additional 2 welds are radiographed for every weld that has failed. One of the pipe spools had an unacceptable defect, which the contractor has ignored and radiographed another weld in tis place, which is acceptable, what would your course of action be? a) As long as the other radiographed butt weld is acceptable its ok as the 10% contractual percentage required by the specification/code has been satisfied b) This is usual practice as 10% NDT is not really important c) Review the original failed weld and insist that they have the additional 2 welds radiographed d) Review the original failed weld and have it repaired, radiographed. Then I would insist that they have an additional 2 welds radiographed

47.

During post weld heat treatment what is the sequence for the PWHT chart? a) Restricted heating rate, soak time, unrestricted cooling rate b) Un Restricted heating rate, Restricted heating rate, soak time, restricted cooling rate, unrestricted cooling rate c) Restricted heating rate, soak time, restricted cooling rate d) Restricated heating rate, un-restricted heating rate, soak time, restricted cooling rate, un-restricated cooling rate

48.

Hydrogen induced cold cracking (HICC) is often referred to by other names that describes various characteristics of hydrogen cracks, which one of the following would not be correct term as applied to HICC? a) Cold cracking b) Delayed cracking c) Under-bead cracking d) Stepped like cracking

49.

Slag lines found in MMA welds are usually associated with: a) The voltage being too low b) The open circuit current being too high c) Improper cleaning between weld runs d) Low open circuit voltage

50.

In shop floor scenario you are faced with a problem of a consistent problems in all the welds. What would be your course of action? a) Check the consumable issue, handling procedures b) Check the welding machine, setup and parameters c) Check welder d) All of the above

51.

Who determines what the correct weld preparation ( root gap, root face , included angle) should be? a) The welding engineer b) The welding supervisor c) The welder will decide d) The inspector will recommend what is suitable

52.

The temperature at which chromium carbides are formed in Austenitic stainless steel is approximately between? a) 350-550oC b) 600-850oC c) 800-1050oC d) 1050-1500oC

53.

Sensitization is a term applied to the formation of which intermetallic compound at the grain boundaries in the HAZ of austenitic stainless steels? a) Chromium carbide b) Titanium carbide c) Niobium carbide d) Molybdenum carbide

54. GMAW, a. Can be used in all positions. b. Can only be used in PA, PB and PC position. c. Dip transfer can only be used in the PB position. d. Spray transfer only can be used in all positions. 55. Preheating, a. Increases weld zone YS and removes moisture. b. Increases weld zone toughness and removes hydrogen. c. Increases weld zone UTS and removes hydrogen. d. None of the above. 56.

On a specific pipeline job the specification says 10% radiography. For every failed weld two additional radiographs are to be taken. If the pipe has one failure, then your course of action would be ? a. If the total radiography meets the percentage of 10, then accept the job. b. Ignore the failed radiograph and substitute with the RT of another joint. c. Ask for an increased percentage of RT for the purpose of ensuring quality. d. None of the above.

57.

Who is permitted to do production welding ? a. An appropriately qualified welder. b. Any welder designated by the welding engineer. c. A welder who has worked on a similar project. d. A trained welder for JL045.

58.

Is it necessary for the welding inspector to check the polarity during welding ? a. No, not necessary, since it does not affect quality in many cases. b. No, it is for the welder to take care of. c. Yes, it should be checked, but only when the penetration is an important criteria. d. Yes, it should be checked by the welding inspector.

59.

Weld decay, a. May occur if the interpass temperature drops below the minimum specified. b. May form if carbide precipitation takes place. c. Usually forms in highly restrained T-butt joint configuration. d. Both a and b.

60.

Stress relieving after welding, a. Is normally carried out above the lower critical limit. b. Is normally carried out below the lower critical limit. c. Is always carried out on high tensile strength material. d. All of the above.

1. d 2. d 3. d 4. c 5. a 6. d 7. b 8. a 9. b 10. b 11. c 12. a 13. b 14. d 15. c 16. a 17. a 18. c 19. d 20. a

21. c 22. d 23. b 24. d 25. b 26. b 27. b 28. c 29. b 30. b 31. b 32. c 33. b 34. b  35. c 36. b 37. b 38. c 39. c 40. d

41. a 42. c 43. c 44. b 45. c 46. d 47. b 48. d 49. c 50. d 51. a 52. b 53. a 54. a 55. b 56. d 57. a 58. d 59. b 60. a

1. Solidification cracking, a. Always in weld, longitudinal direction. b.Always in weld, transverse direction. c.Always in the last area of a weld to solidify. d.All of the above. 2.In NDT, a.Radiography is the best method for the detection of lack of side wall fusion in a single V butt weld. b.DPI can be used for both surface and subsurface defect detection. c.MPI can be used for both surface and subsurface defect detection. d.UT is the best method for the detection and sizing of rounded (nonplanar) defects. 3.Charpy testing is carried out on a welding procedure test plate because ? a.It gives an indication of the through thickness ductility (in Z direction). b.The impact test results can be used to verify that the material has not been adversely affected by the heat of the welding. c.It gives an indication of the materials elongation properties. d.It gives a quick indication of the weld quality for welder qualification test. 4. A surface breaking crack will be detected during a magnetic particle inspection if it is A. At right angles to the lines of flux B. Parallel to the lines of flux C. At 25 degree to the lines of flux D. All of the above 5. A measure of accuracy of a radiography as an NDT tool is given by A. Intensity B. Density C. Sensitivity D. Exposure 6. Gamma rays and X rays are part of a family of waves are called A. Acoustic waves B. Light waves C. Electromagnetic waves D. Transverse waves

7. Inherent rectification of the electrical output is produced in the arc then TIG welding using A. AC with a suppressor B. AC without a suppressor C. DC with reverse polarity D. DC with straight polarity 8. When MMA welding low carbon steel which electrode will give the greatest deposition rate A. Hydrogen controlled B. Cellulosic C. Rutile D. Iron powder 9. The voltage necessary to maintain an arc during metal arc welding is termed as A. Mains supply voltage B. Arc current C. Arc voltage D. Ocv 10. Austenitic stainless steels electrodes are generally smaller in length than mild steel electrodes because A. High amperage is used B. Shelf life is decreased C. Their electrical conductivity is less than that of steel D. They are more expensive 11. Tempering is often carried out to regain toughness after which of the following process A. Annealing B. Normalising C. Hardening D. Stress relieving 12. Hydrogen cracking in the weld metal is likely when welding A. Carbon manganese steel B. Stainless steel C. Micro alloyed steel D. Low carbon steels

13. Repair welding is often more difficult than production welding due to. A. The materials being ingrained with inservice contaminants B. Restricted access within the repair area C. The possible position of the weld repair D. All of the above 14. A large grain structure in steels is said to produce A. Low ductility values B. Low fracture toughness values C. High fracture values D. High tensile strength 15. The flame temperature of oxy/acetylene mixture gas is given as A. 3200 C B. 2300 C C. 5000 C D. None of the above 16. Which type of SAW flux is more resistant to moisture absorption A. Fused B. Agglomerated C. Basic D. All of the above 17. A common gas mixture used in MIG welding nickel alloys to combine good levels of penetration with good arc stability would be A. 100% co2 B. 100% argon C. 80% argon and 20% co2 D. 98% argon and 2% oxygen 18. The main usage of arc cutting/gouging process is A. The cutting of single bevel preparations B. The removal of deposited welds C. The cutting of single U type preparations D. The cutting/gouging of non ferrous metals only

19. Oxy pressure and nozzle size in flame cutting would influence A. The temperature required for cut initiation B. The ability to cut stainless steels C. The depth of cut obtainable D. None of the above

20. Movement of the arc in MMA welding by magnetic forces is called A. Arc deviation B. Arc misalignment C. Arc blow D. Arc eye 21. Which of the following may be classed as a more serious defect A. Slag inclusion B. Fusion defects (inter run) C. Fusion defects (surface) D. Porosity 22. Macroscopic examination requires any specimen to be inspected A. Once after etching B. Twice,before and after etching C. Using a microscope D. None of the above 23. Flame cut preparation may during welding increase the likelihood of A. Cracking B. Misalignment problems C. Inclusions D. All of the above 24. With reference to a root penetration bead you would certainly assess A. Root fusion and penetration B. Root concavity C. Burn through D. All of the above

25. A weave technique may give rise to A. Better profiles B. Improved toe blending C. Improved ripple shape D. All of the above 26. Cracks in the weld may be due to A. Solidification problems B. Hydrogen problems C. Excessive stresses D. All of the above 27. The main cause of porosity in welded joint A. Poor access B. Loss of gas shield C. Dirty materials D. All of the above 28. MIG welding tends to be susceptible to lack of fusion problems. This is because of A. Poor maintenance of equipment B. Incorrect settings C. Poor inter run cleaning D. All of the above 29. As the carbon percentage increases in plain carbon steel, which of the following is true ? a.Tensile strength decreases. b.Yield strength decreases. c.Toughness decreases. d.Hardness decreases. 30.MAG welding ? a.In the EN numerical classification of welding process 131 & 135 represents the MAG welding process. b.141 represents the MAG welding process. c.121 represents MAG. d.None of the above.

31.MAG welding, a.If CTWD is extended the voltage will increase. b.If CTWD is reduced the voltage will reduce. c.If CTWD is extended the amperage will increase. d.If CTWD is extended the amperage will reduce. 32.EN 17637 states, a.Minimum recommended illumination is the same requirement as for visual and DPI. b.Minimum of 350 lux, but recommends 500 lux. c.Minimum 500 lux. d.Both a and b. 33.What are the similarities between BS EN 22553 and AWS A 2.4 in depicting welding symbol ? a.Both have the same rule for depicting well all around. b.Both have the same rule for depicting the other side. c.Both have the same rule for depicting sequence of operations. d.Both have the same rule for depicting welding process. 34.In weldability of carbon steels which of the following statements are true ? a.Joint configuration influences weldability. b.Increased carbon contents makes welding easier. c.Thicker plates can be welded easily than thinner plates. d.All of the above. 35. Which of the following elements has the most pronounced effect on weldability ? a.Sulphur b.Chromium c.Molybdenum d.Carbon 36.While making a symbol for a symmetrical fillet weld, a.The size need not be mentioned. b.The length can be mentioned to the left of the symbol. c.The finish is assumed as flat. d.The broken line can be omitted.

37.Which of the following is true ? a.Plug weld in a T joint b.Spot weld in an edge joint c.Fillet weld in a corner joint d.Edge weld in a lap joint 38.Preheating, a.Increases weld zone yield strength and removes moisture b.Increases weld zone toughness and removes hydrogen c.Reduces weld zone UTS values and removes hydrogen d.None of the above. 39.TIG welding ? a.Zirconium electrodes are generally used for the welding of aluminium b.Zirconium electrodes are generally used for the welding of aluminium in current only c.Zirconium electrodes can be used on all weldable material except alloys d.Zirconium electrodes can be used on all weldable materials 40.NDT ? a.Prods are associated with the MPI method b.Prods are associated with UT method c.Prods are not associated with any NDT method d.prods are commonly used for the inspection of welds 41.Arc strike, a.Can lead to hard and brittle spot b.Can cause a reduction in area c.May result in the entire weld being removed. d.All of the above 42.CEV, a.Is normally around 0.36% for fabricated C/Mn steel. b.Is always above 0.48% for fabricated C/Mn steel, this value is required to get adequate strength. c.Never exceeds 0.048% for fabricated C/Mn steels. d.CEV is only applicable for austenitic SS grades.

43.What happens to the material as the operating temperature goes up ? a.Loses hardness b.Yield strength reduces c.Tendency to get oxidized increases d.All of the above 44. Which of the following is true ? a.Run out length reduces, heat input decreases. b.Run out length increases, heat input increases. c.Reduced weaving, heat input increases. d.None of the above. 45.Preheat, a.Is always carried out on C/Mn steels and 316 L stainless steel. b.Is always carried out on C/Mn steels. c.Is generally required if PWHT is to follow. d.Is generally carried out on C/Mn steels with a CEV > 0.48% 46.Preheat, a.Removes all surface contaminations prior to welding. b.Reduces the risk of weld decay and hydrogen crack. c.Makes the joint easier to weld. d.None of the above. 47. Which of the following is the odd one out ? a.Underbead cracking. b.Cold cracking. c.HICC d.Hot cracking. 48.Distortion ? a.A single V butt weld welded from one side highly restrained will have low distortion and low residual stress. b.A single V butt weld welded from both sides with balanced welding will have high distortion and low residual stress. c.A single V butt weld welded from one side with no restraint will have low distortion and low restraint. d.A single V butt weld welded from one side, highly restrained, will have low distortion and high residual stress.

49.In a tensile test the maximum load recorded was 134 KN and the width of the specimen was 2.5 cm, the thickness was 10 mm. What would be the UTS and elongation be ? a.530 N/mm2, 20% elongation. b.536 N/mm2 and elongation cannot be calculated. c.536 N/cm2 and elongation cannot be calculated. d.5.36 KN/mm2 and elongation cannot be calculated. 50.For 80 mm diameter, 12 mm thickness C-Mn steel pipe what would be the correct technique used ? a.DWDI using Ir192. b.SWSI using Co60. c.DWDI using Co60. d.SWSI using Ir192. 51.Fracture Testing, a.Is frequently used in stop/start areas. b.Is frequently used anywhere in the weld. c.Is used where there are no defects. d.Is only used where defects are already present.

1. c 2. c 3. b 4. a 5. c 6. c 7. b 8. d 9. c 10. c 11. c 12. c 13. d 14. b 15. a  16. a 17. b 18. b 19. c 20. c

21. c 22. b 23. d 24. d 25. d 26. d 27. d 28. d 29. c 30. d 31. d 32. d 33. a 34. a 35. d 36. d 37. c 38. c 39. a 40. a

41. a 42. a 43. d 44. d 45. d 46. c 47. d 48. d 49. b 50. a 51. a