2016 Closed Book New

108. A discontinuity or imperfection becomes a defect when: a. It exceeds the limit imposed by acceptance standards b. It is visible on the surface and linear in nature c. It reaches 1/64" in length and 1/32" in width d. Hydrogen is present in the weld bead

a

14. How can you best identify an individual low-hydrogen electrode which a welder is already consuming to make a weld? a. Read the classification numbers printed on the covering near the stub end b. Ask the welder what it was c. Ask the welding foreman d. Look at the identifying numbers on the containe

a

16. The term "defect" designates a discontinuity which: a. Is cause for rejection of the weldment b. May be acceptable depending on the criteria c. Requires re-design of the part by the engineer d. Requires re-qualification of the welder e. All of the above

a

22. Hardness testing using a steel ball of the 10mm diameter with a load of 3000 kg for steel applied for 15 seconds is known as: a. Brinell Hardness b. Vickers Hardness c. Rockwell Hardness d. Knoop Hardness e. Either b or d above

a

24. Why should a root weld bead not be peened? a. For lack of strength, weld may yield and spread joint apart b. Heat treatment from later beads will over harden the peened metal c. A root pass has unbalanced shrinkage stresses d. The root pass will be soft and allow burn-through e. Both b and c above

a

25. What phenomenon gives physical evidence that atoms are in motion even in the solid state? a. Diffusion b. Surface tension c. Atomic energy (radioactivity) d. Sliding friction e. Pack carburizing

a

35. Why does a carbon steel weld cooling from the molten state to room temperature show interruptions and changes in rate of cooling at certain critical temperatures? a. Latent heat of solidification is released on freezing b. Allotropic transformation absorb latent heat on cooling c. Lattice expansion of base metal offsets the cooling contraction of the weld d. Heat is absorbed when magnetic change occurs on cooling

a

38. Which gases must steel welds be protected from? a. Nitrogen, oxygen, hydrogen b. Helium c. Argon d. A mixture of helium and argon

a

42. What element is unwanted in steel because it causes hot short cracking? a. Sulfur b. Carbon c. Manganese d. Nickel

a

48. Tungsten inclusions may be detected within a weld with the following NDE method: a. Radiography b. Liquid penetrant c. Magnetic d. Both a and b above e. All of the above

a

51. How are preheat and interpass temperatures usually measured? a. observing the change in an indicating crayon b. By observing the color of the heated metal c. By using the thermocouple indicating system d. By calculating the heat input

a

55. Which fuel in combination with oxygen gives hot enough flame and environment for welding steel? a. Acetylene b. Butane c. Natural gas d. Propane

a

56. Which arc welding process may use short lengths of filler metal manually applied? a. Shielded Metal Arc Welding b. Gas Metal Arc Welding c. Induction Brazing d. Submerged Arc Welding

a

60. Which testing method cannot determine ductility? a. Nick break test b. Free bend test c. Guided bend test d. Tensile test

a

61. What covers the arc in SAW? a. Granules of flux b. Solidified Slag c. Plasma d. Shielded gas

a

66. Which type of current has the least ability to discover magnetic particle indications below the surface? a. Alternating current b. Half-wave rectified direct current c. Full-wave rectified direct current d. Direct current

a

69. Which device indicates radiographic image quality? a. Penetrometer b. Screens c. Lead Markers d. Shim

a

74. Using the following data, 60,000 PSI is equivalent to which of the following? (To convert PSI to Megapascals, multiply PSI by 0.006895) a. 414 MPa b. 8,700 kPa c. 41,360 kPa d. 87,000 MPa e. none of the above

a

80. E308-15 and E308-16 are electrodes associated with: a. SMAW b. SAW c. GMAW d. GTAW e. None of the above

a

82. In order to detect discontinuities in different directions in a material by magnetic particle inspection, it is best to use: a. Two or more fields in different directions b. Only one field c. Other probe locations d. A high frequency field

a

83. The E6011 and E7018 are electrodes associated with: a. Shielded Metal Arc Welding b. Submerged Arc Welding c. Gas Metal Arc Welding d. Gas Tungsten Arc Welding e. None of the above

a

86. Thin wall pipe is being produced in a pipe mill. The most economical, with good reliability, inspection is by: a. Eddy current b. Ultrasonic c. Radiography d. Magnetic particle

a

93. AWS Specifications for bare carbon steel and bare low alloy steel electrodes for SAW respectively are: a. 5.17 and 5.23 b. 5.23 and 5.17 c. 5.5 and 5.1 d. 5.1 and 5.5

a

95. The process of hardening, tempering and annealing ferrous metals is called: a. Heat treating b. Machining c. Refining d. Forging

a

99. When a discontinuity such as overlap is detected, the weldment may be rejected because the overlap generally results in: a. A high concentration of stress at this notch under cyclic loading b. Insufficient penetration at the root c. Excessive underfill d. Underbead cracks

a

1. The modernized metric system which the US has officially decided to use is known as: a. Standard International Units b. International System of Units c. International Socialized System of Units d. Standardized International System of Units

b

10. A ¼" convex fillet weld has a nominal: a. Throat dimension of ¼" b. Leg dimension of ¼" c. Area of 1/4 square inch d. Volume of ¼ cubic inch e. None of the above

b

100. Internal discontinuities in weldments are detected by nondestructive testing techniques, such as: a. Liquid penetrant b. Radiography c. Tension testing d. Free bend testing

b

18. What is the difference between porosity and inclusions? a. Porosity consists of bubbles in the weld, while inclusions are forms of cracks b. Porosity is caused by entrapping gas, while inclusions are entrapped solid particles c. Porosity and inclusions are the same, there is no difference d. Porosity is located nearer the surface of the weld than are inclusions

b

19. Which of the following materials cannot be brazed? a. Silver b. Magnesium c. Aluminum d. Copper e. Carbon steel

b

30. Ductility values are expressed in: a. Total load b. Percentages c. Averages of multiple tests d. Pounds per square inch of Ksi e. All of the above

b

32. In a welding procdure qualification test, a reduced section tensile test specimen measured ¼' X 1-1/2" before testing and failed at a load of 24,375lbs. What was the tensile strength in pounds per square inch of the specimen? a. 73.1 ksi b. 65.0 ksi c. 56.0 ksi d. 67.5 ksi e. 78.0 ksi

b

33. Which are two crystal structures assumed by iron and steel? a. Body centered cubic (BCC) and hexagonal close packed (HCP) b. Body centered cubic (BCC) and face centered cubic (FCC) c. Face centered cubic (FCC) and hexagonal close packed (HCP) d. Hexagonal close packed (HCP) and body centered tetragonal (BCT)

b

34. In reverse polarity the: a. Electrons flow backwards b. Electrode is positive c. Electrode is negative d. Current is alternating e. Both a and b above

b

37. The Gas Metal Arc Welding process has four types of metal transfer. Three of them are: a. Globular, spray, pinch b. Pulsed, spray, short circuit c. Pulsed, splatter, globular d. Spray, pulsed, droplet

b

39. Joule energy input designates the watt second per inch energy into the weld pool by the welding arc. It is specified as: E (volts) X A (amperes) X 60 / TS (speed in inches per minute) Using the above information, what is the heat input per linear inch (J/in) for a weld made at 300A, 25V, and 6 inches per minute? a. 7,500 J/in b. 75,000 J/in c. 1,250 J/in d. 45,000 J/in

b

40. A cutting process using an air stream, electric arc and a carbon electrode is: a. Plasma Arc Cutting (PAC) b. Air Carbon Arc Cutting(CAC-A) c. Thermal Cutting (TC) d. Electric Mechanical Cutting (EMC) e. Both a and b above

b

41. Preheating is generally used to: a. Increase the brittleness in the weld and heat affected zone b. reduce the magnitude of localized stresses c. Increase the hardness of mild steel d. All of the above e. None of the above

b

44. Prior to approving the welding of a specific part, the welding inspector should examine the purchase specifications to assure that: a. The material is ordered from the proper vendor b. Both the material specification and product grade are identified c. The correct due date is listed on the purchase order d. This step is not performed by the welding inspector. It is the responsibility of the purchasing department e. Both a and b above

b

45. The term used to describe oxides and non-metallic solids that are entrapped in the weld metal or between weld metal and base metal is known as: a. Lack of fusion b. Inclusions c. Porosity d. Either a or b above e. Slugging

b

52. The principal reason for preheating is to: a. Assist in melting the electrode or welding rod b. Decelerate the cooling rate in the deposited weld metal and heat affected zone c. Accelerate the cooling rate in the deposited weld metal and heat affected zone d. Relieve distortion that may have occurred during fit-up

b

57. Which of the following can only occur in the heat affected zone? a. Crater crack b. Underbead crack c. Transverse crack d. Longitudinal crack e. Both b and d above

b

6. What is the minimum educational level to become an AWS Certified Welding Inspector? a. At least two years of college b. A high school diploma or qualifying work experience c. Graduation from an accredited welding school d. No minimum apply if you pass the written test e. At least two years welding experience

b

62. Which term best describes maximum load carrying capability of a material? a. Yield strength b. Ultimate tensile strength c. Elongation d. Reduction in area

b

65. A magnetic particle indication can be found if the indication is perpendicular to: a. Current and the weld b. Magnetic flux lines c. Weld progression d. Plate edge

b

7. The region or area adjacent to a weld that has been heated to a sufficiently high temperature to cause a change in microstructure is the: a. Tempered zone b. Heat affected zone c. Unheated zone d. Pearlite area e. Fusion zone

b

71. Which of the following is an advantage of fluorescent penetrants over visible type penetrants? a. The inspection can be carried out in a well-lit area b. Small indications are more easily seen c. They can be used where contact with water is objectionable d. Less sensitive to contamination of discontinuities

b

76. Welding Procedure Specifications: a. Serve as a general guide for the fabricator b. Govern the production of any weldments the fabricator supplies under a particular contract c. Waived by the fabricator if too many welds need reworked d. Guarantee that no defective welds will be made

b

78. Under most Codes and Standards, a welding procedure must be re-qualified: a. After the welder returns from an absence of two weeks of more b. When any one of the essential variables listed in the Code is changed c. When a new batch of electrodes is used, even if its composition meets Code standards d. When the welding inspector finds cracks longer than specified in the Code

b

81. Under most Codes and Standards, a change in one or more of the essential variables included in the Welding Procedure Specification (WPS) requires the fabricator to: a. Retrain welders employed on the job b. Prepare a new or revised WPS and re-qualify the procedure c. Prepare a new or revised WPS but consider previous qualification test to be applicable d. Get approval from ASME before any additional work is done

b

9. Acceptance criteria in inspection by variables is based on: a. Mechanical tests b. Size and/or number of imperfections c. Use of a Go-No-Go gage d. Ability of the welder to repair defects e. Both a and d above

b

90. The normal specification of ASTM steel will show: a. Tensile, yield and shear strengths, elongation percent b. Tensile and yield strength, elongation percent, chemical analysis c. Tensile, yield and shear strengths, chemical analysis d. Tensile, yield and shear strengths, authorized manufacturers

b

94. A discontinuity in a weldment which can be attributed to the welding process is: a. Plate lamination b. Lack of fusion c. Base metal seam d. Carbon segregation in steel plate

b

96. Full annealing of steel causes the metal to become: a. Hard and brittle b. Soft and more ductile c. Resistant to corrosion d. Difficult to machine

b

12. When using magnetic particle inspection, the closer a discontinuity is to the surface: a. The more diffuse becomes the powder pattern b. The less serious it is as a source of fatigue failure c. The more distinct the powder pattern becomes d. The less sharp becomes the flux leakage field

c

2. Which of the following is a duty of the welding inspector while performing the joint fit-up inspection? a. Verify root opening b. Verify groove angle, if applicable c. Both a and b above d. Check bevel angle e. All of the above

c

20. If linear porosity is aligned along a joint boundary, which cause is suspected? a. Lack of shielding b. Excessive heat applied c. Both a and b above d. Contaminations near the boundary e. All of the above

c

23. Why should a welding inspector study weldability? a. Weldability studies reveal sub-surface defects b. Selection of easily welded materials is his responsibility c. Knowing expected weldability alerts the inspector where to focus attention d. So the inspector can change engineering drawing specifications for the design engineer e. Both c and d

c

27. What discontinuity would give rise to a series of remelted dots beside a weld, resembling a trail left in striking a match? a. Linear porosity b. Aligned micro porosity c. Arc strike d. Stray grinding marks e. Spatter

c

28. What hardness tester measures the depth of residual penetration made by a small hardened steel ball or a diamond cone? a. Brinell Hardness b. Vickers Hardness c. Rockwell Hardness d. Knoop Hardness e. Both b and d above

c

29. What hardness test consists of impressing a diamond pyramid penetrator into the surface of the specimen under a predetermined load? a. Vickers Hardness b. Rockwell Hardness c. Brinell Hardness d. Graham-Pyramid Hardness e. Both a and c above

c

4. For work governed by Codes, an inspector's qualification, duties and responsibilities are usually: a. Not considered important if he/she has a good educational background b. Determined by the designer c. Well-defined by the Code d. Not defined if the fabricator uses only AWS certified welding inspectors e. Both b and c above

c

43. The term "backhand welding" refers to the: a. Position of the hand with relation to the torch b. Position of the rod with relation to the work c. Position of the torch with relation to the direction of the weld d. Position of the welder with relation to the work

c

49. The fit-up of components in a weldment prior to welding: a. Is relatively unimportant b. Can be adequately checked after welding c. be carefully inspected before welding d. Relates only to proper root opening e. Both c and d above

c

5. Toughness may be defined briefly as the ability of a metal to: a. Be hardened by heat treatment b. Be easily deformed c. Absorb mechanical energy d. Absorb heat energy e. None of the above

c

50. A welding procedure for alloy steel tanks lists the maximum heat input which may be used. It will be controlled by limiting certain essential variables. Which of the following variables must be given a minimum limitations? a. Current in amps b. Voltage c. Travel speed d. Electrode diameter e. Base metal thickness

c

53. Pre-weld inspection reveals that a structured steel beam is 5mm (3/16") short. How should this be corrected? a. Pull the connecting pieces into place b. Increase the length of the beam by preheating c. Build up flange and web with weld beads to permit proper fit d. Weld a filler plate of proper thickness to the beam and stress relieve

c

58. How can an oxidizing gas like C02 be used for gas shielded metal arc welding of carbon steel, considering that it is oxidizing in nature? a. By adding flux to the weld joint b. By using an oxidizing electrode wire c. By using a deoxidizing electrode wire d. With AC electrode negative, the weld is self cleaning

c

63. Which destructive test contains a swinging pendulum? a. Drop weight test b. Tensile test c. Charpy impact test d. Explosion bulge test

c

64. Liquid penetrant inspection is limited to: a. Magnetic materials b. Non-magnetic materials c. Discontinuities open to the surface d. Large size defects

c

68. The purpose of the Welding Procedure Specification and the Procedure Qualification Record is to determine: a. How good a welder is in depositing a weld b. The weldment can be properly heat treated c. The weldment is capable of having the properties for its intended application d. The welding equipment is in good working condition

c

70. Radiography's most important quality is: a. Provides a good method for finding cracks b. Does not depend on material size of shape c. Provides a permanent record of weld defects d. Can be used to pinpoint subsurface flaws

c

79. In the AWS electrode classification, the "70" in the designation "E7015" indicates: a. 70% Dilation after welding b. Welding temperature must be above 70° F c. A tensile strength of 70,000 PSI d. 70 electrodes are packed in each box

c

84. Gas Metal arc welding (short circuiting arc) is used to make a fillet weld. The best penetration is achieved with which shielding gas? a. Argon b. Carbon dioxide c. Argon-oxygen d. Argon-carbon dioxide e. Carbon dioxide-oxygen

c

85. The most economical, fastest and reliable inspection with good reliability, on thick wall pipe is by: a. Eddy Current b. Ultrasonic c. Radiography d. Magnetic particle e. None of the above

c

89. Under the ASME Boiler and Pressure Vessel Code, an Authorized Inspector is: a. Any employee of an insurance company which writes boiler insurance b. An AWS qualified welding inspector c. An ASME qualified inspector through written examination formulated by the National Board of Boiler and Pressure Vessel Inspectors d. A level 3 DOT Inspector

c

97. The cable that connects the ultrasonic instrument to the search unit is specially designed so that one conductor is centered inside another. The technical name for such a cable is: a. UT cable b. Conduit c. Coaxial Cable d. Ultrasonic Conductor Cable

c

107. Which of the following factors determine how the mechanical properties change in the heat affected zone? a. How hot the metal gets b. How long the metal stays hot c. How fast the metal cools d. All of the above

d

15. How should low-hydrogen electrodes out of their containers be stored? a. In their original sealed container b. In holding ovens at ambient temperatures c. In open tool cribs for ease of distribution to the welder d. In holding ovens at manufacturers recommended temperatures e. In rod caddiers which are not required to be plugged in to an outlet

d

17. Compressed gas cylinders shall be labeled according to? a. Chemical Name b. Trade name c. Their intended use for the welding process d. Either a and b above e. All of the above

d

21. Selection of the electrode holder size used for SMAW welding is based on? a. Type of electrodes to be used b. Type of base material to be welded c. Both a and b d. Amperage to be used e. All of the above

d

3. Which one of the following tests detects discontinuities by the use of reflecting high frequency sound waves? a. Real time digital imaging (RDI) b. Electromagnetic testing (ET) c. Magnetic particle inspection (MT) d. Ultrasonic examination (UT) e. Both b and d above

d

31. The addition of filler metal is added by hand in which process(es)? a. OAW b. FCAW c. GTAW d. Both a and c above e. None of the above

d

36. Autogenous welding can be accomplished by which of these processes? a. OAW and ESW b. PAW and SMAW c. GTAW and GMAW d. OAW and GTAW e. SMAW and FCAW

d

47. Electrode coverings that have absorbed excessive moisture may be restored by rebaking. Low hydrogen electrodes are restored by baking at approximately: a. 120° to 150° C for 3 hours b. 260° to 320° C for ½ hour c. 120° to 150° C for ½ hour d. 260° to 320° C for 1 hour

d

54. Which of the following are common causes of undercutting when using SMAW? a. weld current too high b. improper electrode manipulation c. improper electrode angle d. a, b and c

d

67. What is the prime suspect when delayed cracking occurs in SAW of carbon steel? a. Inadequate visual inspection of the finished weld b. Residual magnetism from magnetic particle inspection c. Plates were lifted by electromagnet at some time previously d. Presence of hydrogen in the weld area

d

72. Which of the following is a possible cause for false penetrant indications? a. Excessive washing b. Inadequate application of developers c. Part too cold during penetration time d. Lint or dirt

d

75. Under the rules of the ASME Boiler and Pressure Vessel Code, welds to be acceptable in a Procedure Qualification test must: a. Be examined be the welding engineer b. Be made only in the horizontal position c. Be examined by ASME referees d. Pass tension and bend test

d

77. Which of the test part characteristics listed below are normally considered before the specific liquid penetrant test method is selected? a. The kind and size of discontinuities most likely to occur b. The intended application for the part c. The surface finish of the part d. All of the above

d

8. Cracks which result from insufficient feeding of the terminal end of the weld bead are usually referred to as: a. Longitudinal b. Toe c. Transverse d. Crater e. Either b or d above

d

87. According to the AWS D1.1 Code, the welding inspector is to identify with a distinguishing mark: a. All weldments that have been tack-welded b. A weld the may be repaired or replaced c. Welds that require additional inspection d. Weldments which he has inspected and accepted

d

92. Weld spatter can be caused by: a. Too high welding current b. Wrong polarity c. Too large an electrode d. All of the above

d

98. How does an increase in the carbon content affect the properties of steel? a. Increases tensile strength b. Increases hardness c. Decreases ductility d. All of the above

d

13. The symbol below represents the use of Electromagnetic testing in which of the following? ←------------ET-------------→ a. Testing is required on the other side b. Testing is required on both sides c. Testing must be on the arrow side d. Testing may be performed on both sides e. None of the above

e

26. When can cracking associated with the welding process occur? a. When applying heat in the welding process b. When the weld is cooling off c. A few days after the weld is cool d. Both a and b above e. All of the above

e

46. Which of the conditions below can cause porosity in a weld? a. welder technique b. damp electrodes c. oily base metal d. rainy weather e. all of the above

e

73. A welding inspector's duties include: a. Checking Welding Procedure Specification b. Verifying welder qualifications c. Demonstrating correct welding technique d. All of the above e. a and b only

e

88. In low carbon and mild carbon steel: a. Tensile and yield strength are the same b. Yield strength times the percent of the elongation is equal to the tensile c. Tensile strength is about 30% of the yield strength d. Elongation percentage is constant at 22% e. None of the above

e

91. Which of the following methods of welding is most likely to result in a weld contaminated with carbon? a. Gas metal arc welding b. Carbon-arc welding c. Oxyacetylene with oxidizing flame d. Oxyacetylene with Carburizing flame e. b and d above

e