AWS-CWI Sample Questions

SAMPLE CWI FUNDAMENTALS EXAMINATION. F1

Which of the following materials cannot efficiently be cut with OFC? a. high -carbon steel b. low - carbon steel c. stainless steel d. cast iron e. c and d above

F2

Electrical conductivity of a part is the primary requirement for which NDT method a. ET b. UT c. PT d. RT e. None of the above

F3

The melting point of carbon steel is approximately a. 2250º F b. 2375º F c. 2780º F d. 3005º F e. 3333º F

F4

Decibel is a term associated which NDT method ? a. UT b. RT c. MT d. PT e. ET

F5

Which type of GMAW metal transfer results in the least amount of penetration ? a. globular b. short circuiting c. spray d. pulsed spray e. globular spray

F6

Which of the following gases is not commonly used as a shielding gas for GTAW? a. argon b. carbon dioxide c. helium d. argon / helium e. none of the above

F7

After a rejected weld has been repaired, re inspected and found to be acceptable, the welding inspector should : a. change the original inspection report to indicate the part’s acceptance. b. Simply mark directly on the part. c. Fill out a second inspection report. d. Simply tell the foreman to have the part moved to its next operation . e. None of the above

F8

When a metal is alloyed . the atoms of the alloy are incorporated in to the original metal lattice Structure by: a. inclusion b. substitution c. interstitial. d. a or b above. e. b or c above

F9

Shimmed IQI are utilized in with NDT method? a. UT b. ET c. RT d. MT e. PT

F10

Which of the following is not utilized as a semiautomatic process? a. GMAW b. FCAW c. OFW d. SAW e. C and d above

F11

The performance of which of the following test method is least affected by high part temperatures? a. ET b. RT c. PT d. UT e. C and d above

F12

Crater cracks are most often the result of: a. improper technique b. improper filler metal c. improper base metal d. all of the above e. none of the above.

F13

The tail of a welding symbol I can be utilized for a. denoting welding process requirements b. denoting welding procedure requirements c. denoting welding electrode requirements d. all of the above. e. None of the above

F14

As tempering temperature increases. a. hardness increases. b. Hardness decreases. c. Elongation decreases. d. A and c above e. B and c above

F15

In GMAW, the distance from the end of the contact tube to the arc is. a. arc length. b. Electrode extension c. Stick out d. a and b above e. b and c above.

F16

Which of the following is not a type of metal transfer in GMAW? a. spray b. short circuiting c. globular d. pulsed arc e. open circuiting

F17

Ultraviolet light is utilized with which NDT method? a. VT b. PT c. MT d. A and b above e. B and c above

F18

The a. b. c. d. e.

F19

Using VT, all of the following flaws may readily be detected except? a. surface crack b. undercut c. overlap d. under fill e. none of the above

F20

Part a. b. c. d. e.

F21

Which of the following tests are utilized for determination of a material’s toughness ? a. charpy test b. dynamic tear test c. drop-weight nil-ductility test d. all of the above e. none of the above

F22

Of the following elements, which are utilized as an alloy to pure tungsten to produce GTAW electrodes? a. zirconium b. thorium c. columbium d. a and b above e. b and c above

F23

For single bevel – groove weld symbols the line of the weld symbol running perpendicular to the reference line appears: a. on the right b. on the left c. on either side, depending on company policy. d. On the side in which the straight side actually appears in the joint e. Dose not matter.

F24

When welding medium carbon steel using the FCAW process, the heat –affected zone hardness Will increase when: a. the weld is allowed to cool slowly b. the base metal is thin c. the weld current is decreased . d.) the travel speed is increased e.) preheat is utilized

technique which does not aid in reducing residual stress is: peening. vibratory stress relief thermal stress relief external restraint preheating.

dimensions can be revealed using all but which of the following ? MT UT ET VT All of the above

F25

Of the following ,which is not a cause of undercutting when using SMAW? a. weld current too high b. travel speed too slow c. welding electrode too large d. improper electrode manipulation e. use of electrode in a position other than that for which it was designed

F26

NDT technicians may be qualified in accordance with the requirements of: a. AWS DI.1. b. API 1104 c. SNT-TC-1A d. ASME Section V . e. ASME Section IX.

F27

Of those below , which factor has the least effect on the amount of residual stress and distortion that will result from welding ? a. heat input b. phase changes c. preheat d. tensile strength e. coefficient of thermal expansions

F28

Capillary action plays a role in which NDT method? a. ET b. UT c. RT d. PT e. MT

F29

If a welder is continually turning out reject able work., the welding inspector should: a. inspect his work more critically. b. ask that the welder be fired. c. Require that the welder be re qualified. d. Instruct the welder in the proper techniques. e. ask that the welder use another process.

F30

Which of the following tests can be used to judge weld soundness? a. nick break b. side bend c. face bend d. radiography e. all of the above

F31

Arc blow can be caused by: a. magnetic field distortion. b. Improper grounding location. c. Welding at the end of a joint. d. Welding in corners. e. All of the above

F32

Those shielding gases used primarily for GMAW include: a. carbon dioxide. b. Argon c. Helium d. A and b above e. All of the above

F33

Developing is one of the steps in which NDT method? a. UT b. RT c. PT d. A and b above e. B and c above

F34

Which discontinuity below will provide the sharpest MT indication? a. surface porosity b. surface crack c. subsurface porosity d. subsurface crack e. indications will be identical for all of the above

F35

In SMAW, an increase in arc length results in: a. increased current: increased voltage b. decreased current: increased voltage c. increased current: decreased voltage d. decreased current : decreased voltage e. none of the above.

F36

Weld inspection reports should always: a. be completed in ink . b. be done in pencil so mistakes can be easily corrected. c. Be maintained only if the weld is reject able. d. Filled out by a clerk so that everything is readable. e. Include the welder’s identification.

F37

The property of a metal which relates to its ability to be cyclically loaded without failing is : a. hardness b. toughness c. tensile strength d. fatigue e. ductility

F38

In GAMW, the type of metal transfer requiting a special power supply is: a. spray b. globular c. pulsed are d. short circuiting e. none of the above

F39

Which of the following is truly a volumetric test method ? a. RT b. UT c. ET d. MT e. None of the above

F40

Use of preheat will result in: a. a faster cooling rate and wider heat- affected zone. b. A faster cooling rate and narrower heat- affected zone c. A slower cooling rate and wider hear-affected zone. d. A slower cooling rate and narrower hear-affected zone e. None of the above

F41

Which of the following methods often utilizes an oscilloscope screen in the detection of flaws a. RT b. ET c. UT d. A and b above e. B and c above

F42

How are hardness and tensile strength related a. increase hardness: decrease tensile strength b. increase hardness: decrease tensile strength c. decrease hardness: increase tensile strength d. .A and c above e. not related

F43

In GMAW. The welding variable controlled by the wire feed speed is: a. arc length b. voltage c. current d. stick out e. none of the above

F44

These welding variables that affect heat input are: a. voltage and current b. current and travel speed c. voltage. Current and travel speed d. travel speed preheat temperature and voltage e. voltage current and preheat temperature

F45

As a. b. c. d. e.

F46

Which of the following provides the most effecting protection from radiation? a. lead shielding b. steel shielding c. concrete shielding d. copper shielding e. none of the above

F47

Welding inspection should only be performed: a. when stipulated by the welding foreman b. after the weld has cooled to room temperature. c. During the shift when welding was completed. d. All of the above e. None of the above

F48

If the weld symbol appears directly of the reference line if means: a. weld both sides. b. Weld arrow side first. c. Weld other side first. d. Weld has no side significance. e. None of the above.

temperature increases: tensile strength increases. Tensile strength decreases. Ductility increases. A and b above B and c above

F49

F50

Which of the following are considered to be arc welding processes? a. SAW, ESW ,SW b. FCAW, GTAW,PAW c. ESW, GMAW, SMAW d. FCAW, SW,ESW e. All of the above An a. b. c. d. e.

7016 SMAW electrode exhibits the following characteristics : low hydrogen: AC only : Iron powder low hydrogen: AC and DCEP low hydrogen: AC and DCEP: Iron powder retile :DCEP: retile :DCEP: Iron powder

F51

Piezoelectricity is property utilized by which NDT method? a. UT b. ET c. RT d. A and b above e. B and c above

F52

The thermal treatment that usually follows quenching which restores some of the metal’s ductility is referred to as. a. stress relief. b. Tempering c. Hardening d. Normalizing e. Post heat.

F53

Which of these methods is most often used to reduce residual stress created by welding. a. Pre bending b. shot blasting c. quenching rapidly welding d. post weld hear treating e. none of the above

F54

The physical principle that permits that migration of liquid penetrates into very fine surface discontinuities is a. magnetic permeability b. optical fluorescence c. capillary action d. emulsification e. none of the above

F55

The process whereby a large gap is filled with braze material without the help of capillary action is a. torch brazing. b. Arc brazing c. Braze welding d. Dip brazing e. Flow brazing

F56

Which of the following contains base metal specifications? a. AWS D1.1 b. AWS. Section II, Part C c. AWS A5.1 d ) ASME Section 1X. e.) none of the above

F57

Which of the following is not considered to be a satisfactory method of magnetization when conducting a magnetic particle test? a. AC coil b. Ac yoke c. Dc coil d. Dc prod e. None if the above

F58

Advantages if MT include all but: a. the detection of surface flaws b. the detection of slightly subsurface flaws. c. The detection of surface flaws tightly closed by carbon slag or contaminants. d. The fact that it is faster than PT. e. None of the above.

F59

In general, an increase in the carbon equivalent of a steel will result in an increase in its: a. ductility b. hardness c. strength d. a and b above e. b and c above

F60

The most commonly used process for welding light gage stainless steel tubing for critical application is: a. SMAW b. GMAW c. GTAW d. OFW e. None of the above

F61

The fuel gas most commonly used for OFW is: a. acetylene b. propane c. natural gas d. methane e. all of the above

F62

Which of the following can result when hydrogen is introduced in to the molten weld pool? a. porosity b. under bead cracking c. delayed cracking d. b and c above e. all of the above

F63

Entrapped slag can result when using a. SMAW b. FCAW c. ESW d. All of the above

F64

The material property that describes its ability to withstand a load is: a. hardness b. toughness c. strength d. fatigue e. none of the above

F65

The presence of paint on the surface of a part will most drastically affect the results of which NDT Method? a. PT b. RT c. MT d. All of the above e. None of the above

F66

If no information appears to the left of a groove weld symbol, this means a. no weld is required on that side. b. The weld is to be full penetration c. The weld is to be continuous for the entire length of the joint. d. No weld joint preparation is required. e. None of the above

F67

Which of the following flaws is not normally detected using RT? a. lamination b. porosity c. incomplete fusion d. crack e. none of the above

F68

Dwell time is a term associated with which NDT method? a. MT b. PT c. RT d. ET e. None of the above

F69

The material property expressed in terms of an endurance limit is: a. fatigue b. toughness c. strength d. ductility e. hardness

F70

Fracture toughness results will often be expressed in terms of: a. breaking energy b. tensile strength c. percent elongation d. endurance limit e. none of the above

F71

Shielding of the molten pool in OFW is accomplished by: a. a granular flux. b. A chemical reaction c. An inert gas d. A vacuum chamber e. A flux paste

F72

In addition to judging the final quality of a weld, the welding inspector is also responsible for all of the following except: a. checking for proper electrode storage b. verification of a welder’s qualification c. witnessing all repairs d. a and b above e. b and c above

F73

The last digit of an SMAW electrode designation is an indication of: a. the composition of the coating b. the arc characteristics. c. The recommended type of current. d. The degree of penetration. e. All of the above

F74

ET can be used to detect all but: a. a material’s conductivity. b. A material’s hardness. c. a thin material’s thickness. d. A material’s heat treatment. e. None of the above

F75

For an SMAW electrode the next to the last number in the designation refers to: a. the tensile strength of the weld deposit. b. The positions in which it can be used. c. The type of coating d. The recommended type of current. e. None of the above

F76

The property of a material that relates to its resistance to impact is: a. hardness. b. Fatigue. c. Fracture toughness. d. Tensile strength e. Ductility

F77

Of the following discontinuities, which is least likely to be the result of some improper welding technique ? a. porosity b. Lamination c. Lamellar tear d. Crack e. None of the above

F78

Which of the following is considered to be an advantage of VT? a. discontinuities can be located and noted when they occur. b. It is capable of detecting subsurface discontinuities. c. It can be done very economically. d. A and c above e. None of the above

F79

Which of the following is not considered to be a welding inspector’s responsibility to the public? a. undertaking only those assignments for which he is qualified b. being objective and factual in the performance of his duties c. signing only for inspections that he has personally performed d. reporting nonconformities to the news media e. none of the above

F80

Which of the following cannot typically be done in the overhead position a. SAW b. ESW c. Spray transfer GMAW d. A and b above e. All of the above

F81

No information appearing to the right of a groove weld symbol means: a. the weld is to be full penetration b. no weld is required on that side. c. The weld is to be continuous for the entire joint length d. No weld joint preparation is required. e. None of the above

F82

The welding process that typically utilizes a tubular electrode is: a. SMAW b. GMAW c. FCAW d. SAW e. ESW

F83

The property relating to a metal’s resistance to indention is: a. strength b. ductility c. hardness d. toughness e. fatigue

F84

ET us the abbreviation for: a. eddy current testing. b. Electromagnetic testing c. Emissive testing d. A and b above e. B and c above

F85

Filler metal specifications are found in which of the following documents? a. AWS A5.1 through A5.30 b. ASME section II, part C c. AWS D1.1 d. A and b above e. B and c above

F86

The flux covering on an SMAW electrode provides all of the following except a. gas shielding for the molten pool b. arc stabilization c. alloying. d. Deoxidation. e. None of the above.

F87

When a weld joint preparation is found to be defective, the inspector: a. should allow welding to proceed if he feels that the welder can produce a satisfactory weld. b. Should instruct the welder in how to overcome the problem. c. Report the deficiency to the proper supervisory personnel. d. Require that the parts be disassembled and properly assembled. e. None of the above

F88 The orientation of the probing energy source with respect to that of a flaw is not considered to be a significant variable in which NDT method? a. RT b. UT c. PT d. MT e. None of the above

F89

Information that appears to the left of the weld symbol refers to: a. the weld length. b. The weld size c. The electrode size d. The number of passes required. e. None of the above

F90

Which process utilizes a granular flux? a. SAW b. FCAW c. ESW d. A and b above e. A and c above.

F91

Of those micro structural constituents listed below, the hardest is: a. marten site b. ferrite c. bainite d. austenite e. pearlite

F92

In radiography, the image of a completely cracked weld on the film will a. appear as a reasonably well-defined low density line. b. appear as a reasonably well-defined high density line. c. appear as a row of low density spots or dots. d. Appear as a row of high density spots or dots. e. None of the above

F93

A material’s ductility is commonly expressed in terms of a. percent elongation b. percent reduction of area. c. Yield strength d. a and b above e. b and c above

F94

Who is responsible for the qualification of welding procedures? a. independent test lab b. fabricator c. welding inspector d. architect e. engineer

F95

What MT technique could be used for the discovery of longitudinal flaws a. head shot b. circular magnetization c. longitudinal magnetization d. a and b above e. b and c above

F96

Which code gives pre qualified status to certain weld joint configuration a. API 1104 b. AWS D1.1, c. ASME Section IX d. ANSI B31.1 e. None of the above

F97

Information that appears to the right of the weld symbol refers to a. the process to be used. b. The type of electrode to be used. c. The length of weld required. d. The size of weld required. e. The required joint configuration

F98

When a clerical mistake is made while completing an inspection report the inspector should. a. erase the error and fill in the correct information. b. Cross out the error and supply the proper information c. Cross out the error and supply the proper information ,as well as initialling and dating the occurrence. d. Attach a note to the report explaining the reason for the change e. None of the above.

F99

The rapid quenching of a high carbon steel from the austenitizing range will result in the formation of a. pearlite. b. marten site c. cementite d. ferrite e. austenite

F100 When an austenitized steel is cooled to room temperature, an increase in the cooling rate will result in a. an increase in hardness and a decrease in ductility. b. An increase in tensile strength and a decrease in hardness. c. A decrease in tensile strength and increase in hardness. d. An increase in ductility and a decrease in hardness. e. A decrease in hardness and a an increase in ductility. F101 That material property which is greatly affected by the surface finish of the part is. a. Strength b. Fatigue. c. Ductility d. Toughness e. None of the above F102 The heat treatment in which the material’s temperature is raised to the austenitizing range held for a Prescribed time and then allowed to cool to room temperature while remaining in the furnace is Referred to as. a. Stress relief b. Annealing c. Normalizing d. Tempering e. Austenitizing. F103 In which direction does a rolled plate material exhibit its least amount of ductility? a. Parallel to the rolling direction b. Transverse to the rolling direction in the plane of the plate c. Transverse to the rolling direction in a plane perpendicular to the plate surface d. A and b above e. B and c above

F104 When weld has been rejected by a qualified NDT technician. The welding inspector should: a. Review the test results and maintain the test records. b. Re inspect to verify the defect. c. Accept the weld if its visual appearance is in compliance with the applicable code or specification d. Require another inspection by a third party e. Accept the weld since it is in a low stress region. F105 Equal thicknesses of steel, cast iron, aluminium ,lead and copper are radiographer using the same Exposure condition. Which martial will result in the darkest radiograph ? a. Lead b. Steel c. Aluminium d. Copper e. Cast iron F106 The welding process that utilizes a non consumable electrode is: a. GMAW b. SAW c. GTAW d. FCAW e. SMAW F107 The heat treatment in which the material’s temperature is raised to the austenitizing range. held for A prescribed time and then allowed to cool to room temperature in all air is referred to as : a. Austenitizing b. normalizing c. annealing d. quenching e. tempering F108 In a guided bend test using a bend radius equal to twice the thickness of the specimen , the outer Surface of the bend is elongated approximately: a. 10% b. 15% c. 20% d. 25% e. none of the above F109 An E71T-1 electrode designation is for which welding process? a. PAW b. FCAW c. SMAW d. GMAW e. None of the above F110 The welding inspector must be capable of : a. welding b. performing NDT c. performing chemical analysis. d. All of the above e. None of the above F111 A break in the arrow line has what significance? a. welding must first be done the arrow side. b . welding must first be done on the other side. c welding must be done alternately on both the arrow and the other sides d. The arrow segment points to that member which receives some preparation e. None of the above.

F112 It is discovered that a GMAW mild steel weld was produced with a shielding gas containing oxcoan molature. To determine the extent of the surface and subsurface porosity that resulted, which NDT method would be most effective? a. MT b. RT c. VT d. PT e. ET F113 Which welding process always progresses in the vertical direction with welding occurring in the flat Position? a. ESW b. SAW c. SMAW d. FCAW e. OFW F114

The heat treatment in which the material’s temperature is raised to just below the lower Transformation temperature and held for a prescribed time before allowing it to cool to room Temperature is referred to as: a. Tempering b. Austenitizing c. Stress relieving d. Normalizing e. Preheating

F115 The value at which a material’s behaviour changes from elastic to plastic is referred to as the: a. Yield point b. Modulus of elasticity c. Endurance limit d. Transformation temperature e. Young’s modulus. F116 Low-hydrogen electrodes can properly stored a. In a natural gas oven b. In electric oven. c. In a vented electric oven d. In a vented gas oven e. None of the above F117 All welding symbol information referring to the arrow side of the joint is found: a. In the tail b. Above the reference line. c. Below the reference line. d. Wherever dictated by company policy. e. None of the above F118 The marking of a reject able weld should: a. be clear and understandable to all involved b. be made with a steel impression stamp. c. Note the proper repair procedure d. Always be in red e. Always include the welder’s identification.

F119 MT cannot be used effectively to inspect: a. Austenitic stainless steel welds on carbon steel. b. Authentic stainless steel welds on stainless steel. c. Carbon steel welds on carbon steel d. a and b above e. b and c above. F120 Of the welding processes listed below, the one most commonly having the highest deposition rate is a. ESW b. FCAW c. SAW d. SMAW e. GMAW F121 The uses of preheat on a medium carbon steel will: a. Reduce distortion b. Reduce the possibility of hydrogen cracking c. Result in the formation of marten site d. A and b above e. B and c above F122 The tensile test can be used to provide values for which of the following? a. Yield point b. Ultimate tensile strength c. Modulus of elasticity d. Elastic limit e. All of the above F123 Which of the following is not an acceptable method for control of raw materials? a. Color coding b. Alpha-numeric coding c. chronological arrangement d. location segregation e. none of the above F124 The welding inspector’s duties should include: a. The acceptance/rejection of welds. b. The verification of a weld filler metal type. c. The development of weld repair procedures. d. A and b above e. B and c above. F125 In a. b. c. d. e.

the construction of a welding symbol, the basic element is the Arrow. Reference line Weld symbol Tail None of the above .

F126 The length of weld : a. is not important. b. Cannot be determined directly from the symbol. c. Can be determined form the symbol. d. All of the above. e. None of the above

F127 The symbol in figure 1 requires: a. field welding . b. weld all around c. a fillet weld d. the use of shielded metal arc welding . e. all of the above

F128 A SMAW weld was produced in which the welder failed to properly clean between passes in a Multi pass weld. Which non-destructive test would best reveal the flaws that may be present in the completed weld? a. RT b. VT c. MT d. PT e. ET F129 SMAW can be utilized in which type of application ? a. semiautomatic b. machine c. manual d. all of above e. none of the above

F130 What position is depicted in figure 2 ? a. 6G b. 5G c. 6F d. 6GR e. none of the above.

F131 What is the approximate diameter of an electrode that measure 1.2mm? a. 0.472 in b. 4.72 in c. 0.39 ft d. 0.039 ft e. none of the above. F132 Under bead cracking is primarily caused by: a. a source of hydrogen. b. Restraint. c. Excessive preheat. d. All of the above. e. None of the above. F133 Which is not a true statement about brazing ? a. The base metal is not melted. b. The filler metal melts at a temperature below 800 degrees. F. c. It can be done in an inert gas atmosphere. d. It relies on capillary action. e. None of the above

Questions F134 and F135 refer to figure 3. F134 The first operation required by the above symbol is: a. ultrasonic inspection of the base metal. b. Visual inspection of joint preparation . c. Performance of groove weld. d. Performance of back weld. e. Back gouging.

F35

Ultrasonic inspection is to be performed: a. On the backing weld only. b. On the entire length of weld. c. On 10% of the weld length . d. From the arrow side only. e. None of the above.

F136 Which welding process utilizes a constant current power source? a. GMAW b. SMAW c. GTAW d. A and b above e. B and c above. F137 Which of the following discontinuities is associated with shrinkage stresses in the through Thickness direction of thick plate? a. crater cracks b. lamellar tears c. toe cracks s. d. root cracks e. none of the above. F138 Which of the welding techniques below describes a welding process in which the arc and filler metal Feeding is machine operated while the joint travel speed and guidance arc the responsibility of the Welder ? a. semiautomatic b. manual c. machine d. automatic e. none of the above F139 The symbol shown in figure 4 depicts: a. a backing weld. b. A field weld. c. A melt-through weld. d. Weld all around. e. Grind to a rounded contour

F140 Which of the following symbols correctly describes the joint configuration shown in figure 5?

F141 The width of the cut produced during a cutting process is referred to as: a. root opening b. kerf. c. Bevel d. Bevel angle e. Chamfer F142 For the 2G position in pipe welding: a. the axis of the pipe is vertical and the plane of the weld is horizontal. b. The axis of the pipe is horizontal and plane of the weld is vertical. c. The pipe is not fixed. d. The axis of the pipe and the plane of the weld are at 45 degree angle with the vertical plane. e. None of the above. F143 During operation ,the heat for electro slag welding is provided by: a. the arc. b. The electrical resistance heating of the granular flux. c. The consumable quide tube d. A and b above e. B and c above. F144 A flow rate of 22 litters per minute is approximately equal to: a. 466 cfh (cubic feet per hours) b. 46.62 cfh c. 10.38 cfh d. 103.8 cfh e. none of the above. F145 It is suspected that a GMAW weld was produced in an area where there was an excessive draft Which non-destructive test would best reveal the internal discontinuities which may have resulted ? a. PT b. MT c. RT d. UT e. None of the above. Question F146 through F149 refer to figure 6 F146 The size of the arrow side weld is: a. ¼ inch b. 5/6 inch c. 1 inch. d. 2 inches e. none of the above. F147 The length of the other side weld is: a. 1 inch b. 6 inchse c. 2 inchse d. 4 inches e. none of the above. F148 The pitch of the weld is: a. ¼ inch. b. 4 inches c. 5/16 inch. d. 1 inch.

e.) 2 inches.

F149 The process to be used in welding according to figure 6 in a. The inspector’s choice. b. The fabricator’s choice c. Not stated d. B and c above e. None of the above. F150 In order to learn the exact location of a subsurface flaw in three direction, the best NDT method Would be: a. RT b. MT c. PT d. UT e. ET F151 “That surface of a member included in the groove” best describes: a. Root opening b. Groove angle c. Weld interface d. Groove face. e. None of the above . F152 Crater cracks, are the result of: a. poor welding technique. b. Restraint c. Shrinkage. d. Under fill of crater e. all of the above. F153 Figure 7 depicts which welding process? a. SAW b. SMAW c. PAW d. GMAW e. FCAW

Questions F154 through F156 refer to figure 8 F154 The boundaries indicated by “A” are: a. fusion line b. depth of fusion c. weld interface d. fusion face. e. None of the above.

F155 The dimension “D” is referred to as: a. fusion face. b. Fusion zone. c. Depth of fusion. d. Weld interface. e. Fusion line.

F156 The weld interface is indicated by: a. “A” b. “B” c. “C” d. “D” e. none of the above F157 A preheat temperature of 225 degrees F is approximately equal to: a. 350 degrees K b. 107.2 degrees C c. 437 degrees C d. a and b above. e. B and c above. F158 Which of the following weld is not considered applicable for an edge joint? a. V-groove b. Plug c. Edge-flange d. U-groove e. J-groove Questing F159 through F161 refer to figure 9 F159 The dimension “A” refers to: a. root penetration b. weld penetration c. depth of fusion d. joint penetration e. none of the above.

F160 The dimension “D” is called: a. joint penetration b. weld size c. root penetration d. a and b above e. b and c above. F161 The dimension “B” is referred to as: a. joint penetration b. root penetration c. root reinforcement d. a and b above e. b and c above. F162 Which of the following is not a type of weld joint? a. lap b. T c. Fillet d. Butt e. Edge F163 When using SMAW, wet electrodes will most likely cause: a. undercut b. overlap c. under fill d. porosity e. ) all of the above.

F164 Which of the following is considered to be an acceptable way to provide backing for a V-groove Weld in a butt joint? a. copper backing bar b. ceramic backing c. flux backing d. backing weld e. all of the above F165 A welder deposits an average of 12 pounds of weld metal per hour. How many kilograms will be Deposited in six hours of continuous welding ? a. 5.448 kg b. 32.69 kg c. 54.48 kg d. 26.46 kg e. 158.76 kg. F166 A single-weld submerged arc welding machine is operating at 600 amps ,32 volts and is travelling at 8 inches per minute. What is the heat input for this situation? a. 2,400 J/in b. 1.152,000 J/in c. 144,000 J/in d. 110,000 J/in e. 14,400 J/in F167 If an MT indication is noted at the toe of a fillet weld that exhibits an excessively convex profile: a. ignore, since it is a non relevant indication, b. reject the weld. c. Grind to remove the excess convexity and retest. d. Accept the weld. e. None of the above F168 The pipe welding test position in which the pipe is horizontal and rotated so that welding takes place at or near the top is designated as: a. 2G b. 2F c. 3F d. 3G e. 1G F169 The most efficient NDT method for discovery of undercut on the face of a weld is: a. VT b. RT c. UT d. MT e. PT F170 The design strength of a fillet weld is always based on the throat dimension because: a. it has a columnar microstructure. Which is more prone to cracking. b. It is the shortest failure path through the weld. c. It is the location of most defects. d. The design calculations cannot be checked e. It is theory of failure that cannot be supported by actual laboratory testing . F171 Arc strikes are discontinuities most commonly associated with a. ESW b. SAW c. SMAW . d. a and b above.

e. b and c above.

F172 Double-groove joints always require a. back gouging b. special welding processes. c. High deposition rate processes d. Weld to be deposited from both sides of the joint e. None of the above. F173 What welding process is depicted in figure 10 ? a. FCAW b. GMAW c. SMAW d. SAW e. ESW

F174 Light – colures areas within the weld zone in a radiograph could represent: a. porosity b. tungsten inclusions c. melt – through d. a and b above e. a and c above. F175 A single –groove joint always requires: a. special welding processes. b. Back gouging c. A backing bar d. No root opening e. None of above. F176 The substance used in UT to aid in the transmission of sound from the search unit to the work piece And back is called: a. solvent. b. Attenuation c. Couplant d. Cable e. Transducer. F177 A 30 pound roll of welding wire weighs how many kilograms? a. 1.362 kg b. 66.15 kg c. 13.62 kg d. 661.15 kg e. 6.615 kg F178 The junction of the weld with the surface of the base metal is referred to as the a. face b. root c. leg d. toe e. edge F179 Internal plate laminations are best revealed using: a. UT b. RT c. MT. d. PT.

e. ET.

F180 Porosity in GMAW can be caused by: a. Drafts b. Contamination c. Too little shielding gas flow d. Too much shielding gas flow e. All of the above F181 The overhead fillet position is designated as: a. 5F b. 4F c. 3F d. 2F e. 1F F182 The radiograph in figure 11 shows. a. cracks b. incomplete fusion c. incomplete joint penetration. d. Slag inclusions. e. None of the above.

F183 The welding process depicted in figure 12 is: a. GMAW b. SAW c. SMAW d. GTAW e. PAW

F184 The radiograph shown is figure 13 exhibits: a. slag inclusions. b. Tungsten inclusions. c. Porosity d. Incomplete fusion. e. None of the above.

F185 How many micrometers are in one meter? a. 1,000.000 b. 1,000 c. 100 d. 1,000,000,000 e. none of the above F186 In a groove-weld cross section , the line separating weld metal from base metal is called: a. the fusion face. b. The depth of fusion. c. The depth of penetration d. The weld interface. e. None of the above

F187 In the radiograph in figure 14, the arrows point to: a. transverse cracks b. a crater crack c. a longitudinal crack d. an under bead crack. e. None of the above.

F188 In complete fusion can be caused by : a. porosity b. weld joint contamination c. undercut d. wet electrodes. e. Trapped hydrogen in the base metal. F189 In pipe groove welding , the 45 degree fixed position us designated as: a. 1G b. 2G c. 2F d. 5G e. 6G Questions f 191 through f195 refer to figure 15.

F190 The “A” dimension is referred to as: a. the throat. b. The size c. The leg d. A and b above e. B and c above.

F191 “F” point to: a. the root penetration b. the weld penetration c. the wed root d. the joint root e. none of the above. F192 The dimension “C” shows: a. theoretical throat. b. The actual throat c. The effective throat d. A and b above e. B and c above F193 The dimension “D” is called: a. The theoretical throat. b. The effective throat. c. The actual throat d. A and b above e. B and c above

F194 The dimension “E” refers to: a. the actual throat. b. The effective throat. c. The theoretical throat. d. A and c above e. None of the above. F195 If a wire is being fed at a speed of 120 mm/s, how many inches per minute is that equal to? a. 28.3 ipm b. 283 ipm c. 50.75 ipm d. 5.076 ipm e. none of the above F196 The defect noted in the radiograph in figure 16 is a. incomplete penetration b. a crack. c. incomplete fusion d. porosity e. none of the above

F197 Center line cracks can be caused by : a. the use of preheat. b. A highly restrained weld joint c. using the wrong polarity d. stress relief heat treatment. e. The presence of incomplete side wall fusion. F198 A tensile strength of 198 MPa is approximately equal to: a. 4,136,000 pounds per square foot b. 28,7000 pounds per square inch c. 4,136 pounds per square foot d. a and b above e. b and c above F199 Which NDT method will best reveal subsurface porosity ? a. RT b. PT c. MT d. UT e. None of the above. F200 A PT indication of a subsurface discontinuity will appear how as compared to a surface Discontinuity? a. Intermitten b. Sharper c. Less distinct d. PT cannot detect a subsurface flow e. None of the above F201 A tensile strength of 65,000 psi is approximately equal to: a. 448,000 Pa b. 448,000,000 Pa c. 448 MPa d. a and b above.

e. b and c above

F202 The MT indication of a subsurface discontinuity will appear how as a pared to a surface discontinuity ? a. Intermittent. b. Sharper c. Less distinct d. MT cannot detect a subsurface flaw e. None of the above. F203 Which of the following conditions can cause slag inclusions in a weld? a. poor welder technique b. careful inter pass cleaning c. insufficient preheat d. a and b above e. b and c above F204 To be most effective, visual inspection must be conducted: a. before welding . b. during welding c. after welding. d. All of the above e. None of the above Questions f 206 through f 210 refer to figure 17 F205 The dimension “B” is referred to as: a. the leg. b. The size c. The effective throat d. The theoretical throat e. A and b above

F206 The dimension “A” refers to: a. convexity b. concavity c. face reinforcement. d. A and c above e. B and c above F207 The dimension “C” is called: a. the actual throat b. the effective c. the theoretical throat. d. A and b above e. B and c above. F208 The dimension “D” is called: a. The actual throat. b. The effective throat. c. The theoretical throat. d. A and b above e. B and c above.

F209 “F” points to: a. the joint penetration b. the weld penetration c. the weld root d. the joint root e. none of above. F210 A discontinuity is: a. always reject able b. sometimes reject able c. always a defect d. sometimes a defect e. b and d above. F211 What weld discontinuity is shown by the arrow in the radiograph in figure 18? a. crack b. incomplete penetration (incomplete fusion at root) c. burn through d. hollow bead e. tungsten inclusion

F212 An oxygen regulator is set for 40 psi. This is equal to how many Pascal’s? a. 2758 Pa b. 275.8 Pa c. 257,800 Pa d. 2758n Kpa e. none of the above F213 Which of the following discontinuities can be caused by poor welding techniques? a. incomplete fusion b. porosity c. undercut d. overlap e. all of the above F214 What impact strength corresponds to 80 joules ? a. 2.03 ft-lbf b. 6.2 ft-lbf c. 20.3 ft-lbf d. 62 ft-lbf e. none of the above F215 Which of the following discontinuities is seldom discovered during VT? a. crack b. incomplete penetration c. porosity d. tungsten inclusion e. none of the above. F216 Which discontinuity occurs in the heat – affected zone and can result from excess moisture in the Weld zone? a. longitudinal crack b. crater crack c. under bead crack d. porosity e. transverse crack

F217 A mega Pascal is equal to: a. 1,000 Pa b. 1,000, 000 Pa c. 1,000 Kps. d. A and b above e. B and c above F218 Which of the conditions below can cause porosity in a weld ? a. Welder technique b. damp electrodes c. oily base metal d. b and c above e. all of the above F219 Which of the following discontinuities is not associated with GTAW ? a. lack of fusion b. slag inclusion c. tungsten inclusions d. porosity e. undercut F220 A travel speed of 21 ipm converts to : a. 88.9 mm/s b. 8.89 mm/s c. 0.0889 m/s d. 0.889 m/s e. none of the above F221 What is the ultimate tensile strength in MPa of a tensile specimen having a cross section of 0.3 square inches which broke at a load of 24,600 pound a. 565 Pa b. 565 MPa c. 5.65 Pa d. 5.65 MPa e. none of the above F222 Which of the following discontinuities are not associated with GMAW? a. Slag inclusions b. Porosity c. Tungsten inclusions d. A and b above e. A and c above\ F223 A heat input of 40,000 J/in is approximately equal to a. 157.5 J/m b. 1575 J/m c. 15.75 kJ/m d. 157.5 kJ/m e. none of the above F224 NDT technicians are qualified in accordance with a. AWS D1.1 b. API 1104 c. SNT-TC-1A d. ASME Section V e. ASME Section IX

F225 If a. b. c. d. e.

welder is continually turning out reject able work, the welding inspector should: inspect his work more critically ask that the welder be terminated require re qualification instruct the welder in proper techniques ask that the welder use another process

F226 The welding arc may produce toxic breathing conditions when the welding atmosphere contains Vapour of: a. chlorinated hydrocarbons b. trichloroethylene c. metal oxides d. perchloroethylene e. all of the above F227

The CAWI: a. is responsible for determination of a wedment’s conformance to acceptable standards b. inspects weldments only under the direction of a CWI c. cannot inspect critical weldments d. performs inspections the same as a CWI e. all of the above

F228

F229

F230 Where should the preheat temperature be measured? a. in the weld groove b. 6 inches from the edge of the weld groove c. where the arc will be initiated d. 3 inches from the edge of the weld groove e. none of the above

USEFUL FORMULAS Heat Input:

Voltage X Amperage X 60 --------------------------------------------------- = J/in Travel speed ( in /min)

Tensile Strength:

Load (pounds) ---------------------------------------------= Tensile Strength (psi) Area of Specimen (square inch)

Percent reduction on area : (Original area – final area) / original area X 100

Percent Elongation:

(final length – original length ) / original length X 100.

Fundamentals (Answer Sheet)

F1 e F2 a F3 c F4 a F5 b F6 b F7 c F8 e F9 c F10 c F11 a F12 a F13 d F14 b F15 b F16 e F17 e F18 d F19 e F20 a F21 d F22 d F23 b F24 d F25 b F26 c

F 27 c F28 d F29 c F30 e F31 e F32 e F33 e F34 b F35 b F36 a F37 d F38 c F39 b F40 c F41 e F42 b F43 c F44 c F45 e F46 a F47 e F48 d F49 b F50 b F51 a F52 b

F 53 d F 54 c F 55 c F 56 e F 57 e F 58 e F 59 e F 60 c F 61 a F 62 e F 63 e F 64 c F 65 a F 66 b F 67 a F 68 b F 69 a F 70 a F 71 b F 72 c F 73 e F 74 e F 75 b F 76 c F 77 b F 78 d

F 79 d F 80 e F 81 c F 82 c F 83 c F 84 a F 85 d F 86 e F 87 c F 88 c F 89 b F 90 e F 91 a F 92 b F 93 d F 94 b F 95 d F 96 b F 97 c F 98 c F 99 b F 100 a F 101 b F 102 b F 103 c F 104 a

F 105 c F 106 c F 107 b F 108 c F 109 b F 110 e F 111 d F 112 b F 113 a F 114 c F 115 a F 116 c F 117 c F 118 a F 119 d F 120 a F 121 d F 122 e F 123 c F 124 d F 125 b F F F F F

Fundamentals (Answer Sheet)

F 126 c F 127 e F 128 a F 129 c F 130 d F 131 e F 132 a F 133 b F 134 c F 135 b F 136 e F 137 b F 138 a F 139 c F 140 b F 141 b F 142 a F 143 b F 144 b F 145 c F 146 b F 147 c F 148 b F 149 d F 150 d F 151 d

F 152 e F 153 a F 154 d F 155 c F 156 c F 157 d F 158 b F 159 c F 160 d F 161 b F 162 c F 163 d F 164 e F 165 b F 166 c F 167 c F 168 e F 169 a F 170 b F 171 c F 172 d F 173 c F 174 e F 175 e F 176 c F 177 c

F 178 d F 179 a F 180 e F 181 b F 182 c F 183 d F 184 a F 185 a F 186 d F 187 a F 188 b F 189 e F 190 b F 191 d F 192 a F 193 e F 194 e F 195 b F 196 d F 197 b F 198 d F 199 a F 200 d F 201 e F 202 c F 203 a

F 204 d F 205 e F 206 a F 207 c F 208 b F 209 c F 210 e F 211 e F 212 c F 213 e F 214 d F 215 d F 216 c F 217 e F 218 e F 219 b F 220 b F 221 b F 222 e F 223 e F 224 c F 225 c F 226 e F 227 b F 228 b F 229 d

F 230 d.