CSWIP 3.

1 (WELDING INSPECTOR) MULTIPLE CHOICE QUESTIONS

1. When “H2 control” is specified for a manual metal arc welding project, the electrode would
normally be:

(a) Cellulose
(b) Iron oxide
(c) Acid
(d) Basic

2. You would with certainty recognize a hydrogen controlled flux covered electrode from its:

(a) Colour
(b) Length
(c) Trade Name
(d) AWS / BS639 Code Letter

3. When manual metal arc welding is being carried out on an open construction site, which group
of welders are the most likely to require continuous monitoring?

(a) Concrete shuttering welding teams

(b) Pipe welding team
(c) Plater welders
(d) Plant maintenance welders

4. You notice manual metal arc electrodes, stripped of flux, are being used as filler wire for TIG
welding. You would object because:

(a) It is too expensive

(b) The wire would be too thick
(c) The weld metal composition may be wrong
(d) The wire is too short

5. When open site working, serious porosity in metal arc welds is brought to your attention. What
would you investigate:

(a) Electrode type

(b) Power plant type
(c) Electrode storage
(d) Day temperature

6. The steel composition in a structural contract is changed form 0.15% carbon, 0.6% manganese
to 0.2% carbon, 1.2% manganese. Might this influence the incidence of:

(a) Porosity
(b) Cracking in the weld area
(c) Undercut for fillet welds
(d) Lack of root fusion defects

7. One of the following alloys is non-magnetic. Which?

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 (a) 4% Chromium Molybdenum
(b) 12% Chromium
(c) Austenitic Stainless Steel
(d) 9% Nickle Steel

8. When TIG welding Austenitic Stainless Steel pipe, Argon gas baking is called for. This is to:

(a) Prevent oxidation

(b) Prevent under bead cracking
(c) Prevent porosity
(d) Control the penetration bead shape

9. Pre-heating a carbon steel manual metal arc welding is carried out to minimize the risk of:

(a) Scattered porosity

(b) Worm hole porosity
(c) Parent metal cracking
(d) Lack of penetration

10. In UK practice, BS499 part 2 specifies that the drawing dimension quoted for a fillet weld is
the:

(a) Leg length

(b) Actual throat thickness
(c) Weld length

11. For open site manual metal arc welding the following equipment is available. Which would you
choose for safe working?

(a) Single operator transformer

(b) Multi operator transformer
(c) AC / DC composite power unit
(d) Diesel engine driven motor generator

12. If Submerged arc welding is to be used to make butt welds, which would you be most critical
of?

(a) The root gap tolerance

(b) The angle of preparation
(c) The root face width
(d) The gas cut finish

13. 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

14. Preheating for arc welding applies to:

(a) Assembly welding only

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 (b) Assembly and tack welding
(c) Joints over 25mm thick only
(d) Cruciform welds only

15. 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 could be hard and brittle

(b) The weld metal could be too soft
(c) There will be no effect on the weld
(d) The weld will have undercut

16. A welder qualification test is to verify:

(a) Skill of the welder

(b) The quality of the materials
(c) The non-destructive test procedures
(d) The manufacturing method

17. A fabricating procedure calls for fillet welds to be “blended in” by grinding. This is to
influence:

(a) H A Z cracking
(b) Fatigue life
(c) Residual stress
(d) Yield strength

18. Bend test specimens have been taken from a 25mm thick carbon steel butt weld. Which would
show lack of inter-run fusion:

(a) Side bend

(b) Root bend
(c) Face bend
(d) Guided bend

19. Lamellar tearing has occurred in a steel fabrication. Before welding could it have been found
by:

(a) X-ray examination

(b) Dye penetrant
(c) Ultrasonic inspection
(d) It would not have been found by any inspection method

20. You are to oversee the arc welding of some machined fittings and find they are cadmium
plated. Would you:

(a) Permit it to proceed

(b) Permit it to proceed with fume extraction
(c) Stop the operation at once
(d) Advise the welder to drink milk and proceed

21. The unit of Joules would be used to measure:

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 (a) Tensile strength
(b) Impact energy
(c) Hardness
(d) Electrical resistance

22. Submerged arc welding is a process that generally gives:

(a) Slag free welds

(b) Low penetration
(c) Low dilution
(d) High heat input

23. Which of the following does not require baking or drying:

(a) E 6010
(b) E 7018
(c) Sub are flux with Basicity Index of 2
(d) Sub are flux with Basicity Index of 3

24. A welder and procedure re-qualification would be required:

(a) When the run out date of the procedure has been reached
(b) Every Year
(c) When changing from day to night shift work
(d) When there is a change in an essential variable

25. Tensile strength can be increased in steel by:

(a) Annealing
(b) Galvanising
(c) Addition of carbon
(d) Casting

26. Which of the following always occurs in the parent material:

(a) Hydrogen cracks

(b) Laps and laminations
(c) Center line cracks
(d) Porosity

27. To prevent the hardening and cracking of High Carbon Steel plate when flame cutting it is
advisable to:

(a) Pre-heat the plate

(b) Soak the plate in oil
(c) Cool the plate quickly after cutting
(d) Increase the cutting Oxygen pressure

28. Re-crystallization during annealing is used to make steel:

(a) Softer

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 (b) Harder
(c) Tougher
(d) Stronger

29. You should always refer to a 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

30. Spatter may be finely controlled during MIG / MAG welding by:

(a) Adjusting the inductance control

(b) Using CO2 gas
(c) Increasing the arc voltage
(d) Welding with no gas

31. Fatigue testing is used to test welds:

(a) Under cyclic loading

(b) Under creep stress loading
(c) Under impact loading
(d) Under static loading

32. Argon + 2% Oxygen is used when welding:

(a) High carbon steels

(b) Austenitic stainless steels
(c) Aluminum
(d) Martensite stainless steels

33. In BS 639 and BSEn 499 the first digits of the electrode classification indicate:

(a) Tensile and yield strength

(b) Toughness
(c) Electrode coating
(d) Electrode efficiency

34. Cellulosic coatings are generally used because of:

(a) Their low hydrogen content

(b) Their high penetration characteristic
(c) Their high strength weld deposit
(d) Their high weld toughness values

35. Porosity would mostly occur in which of the following:

(a) When MMA welding semi de-oxidized steel

(b) When MIG / MAG welding fully de-oxidized steel
(c) When welding TIG welding non de-oxidized steel
(d) When Sub Arc Welding semi killed steel

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36. When welds have a depth to width ration of higher than 2:1 it is possible that:

(a) Centerline cracks may appear

(b) The fusion boundary will be outside the HAZ
(c) The HAZ will be too narrow
(d) The weld will be non magnetic

37. On which of the following would you not use MPI inspection?

(a) A low carbon steel butt welded joint

(b) An Austenitic Stainless steel fillet welded T joint
(c) A medium carbon steel fillet welded lap joint
(d) All of the above

38. 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

39. In Sub Arc Welding, excessive flux melting will result from:

(a) Increasing the arc voltage

(b) Decreasing the arc voltage
(c) Increasing the travel speed
(d) Increasing the wire feed speed

40. To BS 499 part 2, which of the following is true for a welding symbol:

(a) This or arrow side of the joint goes on top of the reference line
(b) This or arrow side of the joint goes below the reference line
(c) This or arrow side of the joint goes in the middle of the reference line
(d) All of the above

41. Internal lack of fusion defects can be normally found by using:

(a) Penetrant testing

(b) Impact tests
(c) Side bend test
(d) Hardness test

42. Which of the following steel structures has the highest hardness:

(a) Martensite
(b) Austenitic
(c) Ferritic
(d) All have the same hardness

43. An IQI would be used in radiography to assess:

(a) Image quality

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 (b) Type of steel
(c) Density of graph
(d) Type of welding process used

44. Poor penetration would be found in MIG / MAG welded steels when using:

(a) Argon + 20% CO2

(b) CO2
(c) Pure Argon
(d) Argon + 5% CO2

45. In which of the following steels are you most likely to find H2 induced weld metal cracking
after welding:

(a) Low carbon steel

(b) High strength low alloy steel
(c) Austenitic stainless steels
(d) 1% Nickel steel

46. Silicon is added to electrode coating as:

(a) A slipping agent

(b) A slag former
(c) A de-oxidant
(d) A colouring agent

47. The main reason degreasing agents should always be dried from metals prior to welding, is
because they are likely to:

(a) Increase the arc voltage

(b) Produce hazardous fumes
(c) Slow down the welding speed
(d) Produce lack of fusion defects

48. Which of the following processes would be most prone to lack of fusion defects:

(a) Pulsed arc MIG

(b) Spray transfer MIG
(c) Dip transfer MIG
(d) Submerged arc

49. Adjusting the inductance control in dip transfer MIG / MAG welding, will control:

(a) The pulse rate

(b) The gas flow rate
(c) The amount of spatter
(d) The arc voltage

50. Which of the following is an inspection point in Sub Arc Welding?

(a) Flux mesh size

(b) Gas type

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 (c) Tungsten size
(d) Gas flow rate

51. Why is Hot Pass so called?

(a) Because it is applied to 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

52. Which of the following is not inert gas?

(a) Argon
(b) Xenon
(c) Carbon dioxide
(d) Helium

53. Why is a welding arc shielded?

(a) To eliminate hydrogen

(b) To retard the cooling rate of the weld
(c) To eliminate the atmosphere
(d) To ensure maximum heat input

54. Which welding process is considered to be the most versatile?

(a) SAW
(b) TIG
(c) MIG / MAG
(d) MMA

55. The HAZ associated with a weld is:

(a) The melted portion of the parent plate

(b) The area immediately adjacent to the weld which has undergone a micro structural change
(c) The weld area plus the parent plate which has undergone a micro structural change
(d) The are in the weld region with the lowest tensile strength

56. A crack in a weld zone:

(a) Is repairable
(b) Always results in a cut out and complete re-weld
(c) Is acceptable up to 2mm in length
(d) May be repaired or cut out depending on specification requirements

57. If the amperage is too low during the welding of a root bead, the possible result would be:

(a) Lack of penetration

(b) Lack of fusion
(c) The freezing of the electrode
(d) All of the above

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58. Pre-heating prior to welding:

(a) Must always be carried out

(b) Need not be carried out if post heat treatment is to follow welding
(c) Is always carried out using gas flames
(d) All of the above
(e) None of the above

59. Cold lap in another term for:

(a) Lack of fusion

(b) Low amperage
(c) Undercut
(d) Hydrogen cracking

60. When a medium to high carbon steel is quenched:

(a) It becomes malleable

(b) Its hardness increases
(c) It becomes ductile
(d) The plasticity is increased

61. The TIG welding process utilizes an electrode that is:

(a) Cellulosic
(b) Non consumable
(c) Consumable
(d) None of the above

62. Another name for Suckback in the root of a weld is:

(a) Concavity
(b) Convexity
(c) LORP
(d) Root undercut

63. One of the advantages of a multi-pass MMA weld is that it generally produces a:

(a) High tensile strength

(b) High degree of ductility
(c) Coarse grain structure
(d) Fine grain structure

64. A Normalising heat treatment process is carried out by:

(a) Heating the metal just above 650*C

(b) Taking the metal above the re-crystallization temperature and allowing to air cool
(c) Taking the metal above the re-crystallization temperature and allowing to furnace cool
(d) Taking the metal above the re-crystallization temperature and quickly cooling by
immersing

65. The extent of the changes in microstructure will depend on the following:

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 (a) Material composition
(b) Heat input
(c) The rate of cooling
(d) All of the above

66. The British code for visual inspection requirements is:

(a) BS 4872
(b) BS 499
(c) BS 4870
(d) None of the above

67. A code of practice for visual inspection should cover the following:

(a) Before, During and After welding activities

(b) Before welding activities only
(c) After welding activities only
(d) None of the above

68. Incomplete root penetration in a butt joint could be caused by:

(a) Excessive root face width

(b) Excessive root gap size
(c) Low current setting
(d) Both A & C

69. Incomplete root fusion would certainly be caused by:

(a) Linear misalignment

(b) Incorrect tilt angle
(c) Differing root face widths
(d) All of the above

70. You notice a very “yeed ” ripple shape. This is most likely caused by:

(a) Poor consumable choice

(b) Welding position
(c) Excessive travel speed
(d) None of the above

71. “Toe Blending” is important as it may affect:

(a) Toughness
(b) Fatigue life
(c) Penetration
(d) All of the above

72. Slag inclusions may occur with:

(a) Manual Metal arc

(b) Metal Inert Gas

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 (c) Submerged Arc Welding
(d) Both A & C

73. Undercut is caused by:

(a) Excessive amps

(b) Excessive volts
(c) Excessive travel speed
(d) All of the above

74. Undercut is normally assessed by:

(a) Its depth

(b) Its length
(c) Its blending
(d) All of the above

75. A welding procedure is useful to:

(a) Give information to the welder

(b) Give information to the inspector
(c) Give “Confidence” to a product
(d) All of the above

76. An essential variable may:

(a) Change the properties of the weld

(b) Influence the visual acceptability
(c) Require re-approval of the weld procedure
(d) All of the above

77. A magnifying glass may be used during visual inspection by typical magnification would be:

(a) Up to 50 Ø
(b) 2 – 2.5 Ø
(c) 50 – 100 Ø
(d) None of the above

78. When visually inspecting a fillet weld, it would normally be “Sized by”:

(a) The leg lengths

(b) The actual throat thickness
(c) The design throat thickness
(d) Both A & C

79. A planar defect is:

(a) Incomplete fusion defects

(b) Slag inclusion
(c) Incomplete penetration
(d) Both A & C

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80. Penetrant inspection and MPI are mainly used to:

(a) Aid visual inspection

(b) Because the application standard says so
(c) To confirm “Visual uncertainties”
(d) All of the above

81. Defects outside of the limits specified in a standard should always be:

(a) Repaired
(b) Reported to a “senior person”
(c) Radio graphed
(d) All of the above

82. 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

83. MMA electrode can be grouped into three main types. These are:

(a) Basic, Cellulosic and Rutile

(b) Neutral, Cellulosic and Rutile
(c) Basic, Cellulosic and neutral
(d) None of the above

84. The main causes of porosity in welded joints are:

(a) Poor access

(b) Loss of gas shield
(c) “Dirty” materials
(d) All of the above

85. Cracks in welds may be due to:

(a) Solidification problems

(b) Hydrogen problems
(c) Excessive stresses
(d) All of the above

86. Welding a single V butt with laminations showing on the side wall may give rise to:

(a) Lamellar tearing

(b) Solidification cracking
(c) Martensite
(d) Undercut

87. With reference to a root penetration bead, you could certainly assess:

(a) Root fusion and penetration

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 (b) Root concavity
(c) Burn through
(d) All of the above

88. A fatigue failure is characteristic by the appearance of the fracture surface. It would be:

(a) Rough and torn

(b) “Cheveron” – like
(c) Smooth
(d) None of the above

89. “Stray arcing” may be regarded as a serious defect. This is because:

(a) It may reduce the thickness dimension of a component

(b) It may cause liquation cracks
(c) It may cause hard zones
(d) All of the above

90. Overlap in welds could be influenced by:

(a) Poor welding technique

(b) Welding process
(c) Welding position
(d) All of the above

91. Flame cut preparation may, during welding, increase the likelihood of:

(a) Cracking
(b) Misalignment problems
(c) Inclusions
(d) All of the above

92. Macroscopic examination requires any specimen to be inspected:

(a) Once after welding

(b) Twice – once before and once after etching
(c) Using a microscope
(d) None of the above

93. Which of the following may be classed as a “More serious defect”?

(a) Slag inclusions

(b) Fusion defects (Inter run)
(c) Fusion defects (Surface)
(d) Porosity

94. A code of practice is:

(a) A standard for workmanship only

(b) A set of rules for manufacturing a specific product
(c) Levels of acceptability of a weldment
(d) None of the above

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