Materi: Kumpulan pertanyaan dan jawaban mengenai proses pengelasan (welding) serta pemeriksaan hasil pengelasan (weld inspection). Isi pertanyaan dan jawaban mengikuti dokumen tugas yang disediakan.
Question 1
Gas metal arc welding using short-circuiting transfer produces:
- A. Excellent fusion B. Deep penetration C. Greater melt off rate D. (A) and (B) above E. None of the above
Answer: E. None of the above
Question 2
What Welding symbol above represents the following Weld joint?
- A. 1 B. 2 C. 3 D. 4 E. 5 Answer: E. 5
Question 3
The most extensively used weld inspection method is:
- A. UT B. RT C. MT D. VT E. PT
Answer: D. VT
Question 4
What Shade filter plate (or eye protection) is needed when observing submerged arc welding at 1,000 Amps?
- A. No. 14 Filter B. No. 12 Filter C. No. 10 Filter D. No. 4 Filter E. Clear safety goggles or safety glasses
Answer: D. No. 4 Filter
Question 5
Which of the following process can be used to join quenched and tempered steels?
- A. SMAW B. SAW C. GMAW D. All of the above E. B and C above
Answer: D. All of the above
Question 6
The figure above illustrates:
- A. Bend specimen B. Tensile specimen C. Impact specimen D. Macro specimen E. Drop weight specimen
Answer: A. Bend specimen
Question 7
The sketch above shows:
- A. Shielded metal arc welding (SMAW) B. Flux core arc welding (FCAW) C. Electro slag welding (ESW) D. Gas tungsten arc welding (GTAW) E. Stud arc welding (SAW) Answer: C. Electro slag welding (ESW)
Question 8
A specification uses the term "Caulk weld"; according to A3.0, Standard Welding Terms and Definitions, it is a non-standard term that is referring to a:
- A. Putty weld B. Seal weld C. Slugged weld D. A weld covered with caulking putty E. (A) and/or (D)
Answer: E. (A) and/or (D)
Question 9
For heat treatable low alloy steels, the minimum preheat and interpass temperature required cracking depends on:
- A. Available hydrogen during welding B. Condition of heat treatment C. Its carbon and alloy content D. All of the above E. Letters (B) and (C) above
Answer: D. All of the above
Question 10
Which welding symbol below represents the weld joint?
Answer: A. 1
Question 11
The symbol given below indicates:
- A. Double-flare-V-groove weld, ultrasonic test either side in field B. Double-flare-bevel-groove weld, ultrasonic test both sides in field C. Double-bevel-groove weld, ultrasonic test either side in field D. Double-V-groove weld, ultrasonic test either side in field E. None of the above Answer: D. Double-V-groove weld, ultrasonic test either side in field
Question 12
For the fillet weld in picture: Dimension #1 designates the:
- A. Theoretical throat B. Effective throat C. Actual throat D. Convexity E. Size of weld Answer: B. Effective throat
Question 13
Dimension #2 designates the:
- A. Convexity B. Size of weld C. Theoretical throat D. Actual throat E. Effective throat
Answer: C. Theoretical throat
Question 14
Dimension #3 designates the
- A. effective throat B. convexity C. Penetration D. theoretical throat E. actual throat
Answer: D. theoretical throat
Question 15
Dimension #4 designates the:
- A. Penetration B. Overlap C. undercut D. convexity E. concavity
Answer: D. convexity
Question 16
Dimension #5 designates the:
Gambar soal 16
- A. size of weld B. Overlap C. undercut D. convexity E. concavity
Answer: A. size of weld
Question 17
The sketch below shows:
Gambar soal 17
- A. Air carbon arc cutting (CAC-A) B. oxyfuel gas cutting (OFC) C. Gas tungsten arc cutting (GTAW) D. Mechanical cutting E. Plasma arc cutting (PAC)
Answer: E. Plasma arc cutting (PAC)
Question 18
The test which uses the specimen illustrated below is:
Gambar soal 18
- A. All-weld metal tensile B. Macro-etch C. impact D. Bend E. None of the above
Answer: C. impact
Question 19
Back step sequence welding is often used:
- A. for ease of operation B. for tacking the welded metal C. to speed up welding D. to reduce distortion E. to prevent crater cracks
Answer: D. to reduce distortion
Question 20
A 45-degree angle is about:
- A. 78.5 rad B. 7.875 rad C. 1.745 rad D. 0.7875 rad E. 0.07875 rad
Answer: D. 0.7875 rad
Question 21
3.384 millimeter per second equals how many inches per minute?
- A. 7 B. 7.5 C. 8 D. 8.5 E. 9
Answer: C. 8
Question 22
523.65 MPa equals how many pounds per square inch?
- A. 75000 B. 75250 C. 75950 D. 75750 E. 76000
Answer: C. 75950
Question 23
600-degree F rounds to:
- A. 1112°C B. 1022°C C. 340°C D. 333°C E. 315°C
Answer: E. 315°C
Question 24
50 pounds force is:
- A. 122.3 N B. 222.5 N C. 322.4 N D. 344.5 N E. 0.22 N
Answer: B. 222.5 N
Question 25
In E6018 electrode classification according to SFA 5.1, digit 60 means:
- A. 60 MPa minimum electrode tensile strength B. 60 ksi minimum electrode tensile strength C. 60,000 psi minimum electrode tensile strength D. Both B & C E. None of the above
Answer: D. Both B & C
Question 26
Stick welding process is called known as?
- A. GMAW B. SMAW C. GTAW D. SAW E. PAW
Answer: B. SMAW
Question 27
The welding inspector must often communicate with:
- A. Welders B. Supervisors C. Welding engineers D. Members of management E. All of the above
Answer: E. All of the above
Question 28
If the prods shown in method #2 are placed on the face (axis) of a groove weld, which of the flaws would cause the clearest indication?
- A. Transverse surface crack B. Lack of fusion on the root C. A plate lamination D. A longitudinal surface crack E. Tungsten inclusion
Answer: D. A longitudinal surface crack
Question 29
Which of the above symbols as listed in the current A2.4, Standard Symbols for Welding and Brazing, and Nondestructive Examination, is used to indicate field weld?
- A. 1 B. 2 C. 3 D. 4 E. Field welds are not shown on the drawings.
Answer: C. 3
Question 30
Sensitization of stainless steel primarily refers to its loss of:
- A. Strength B. Toughness C. Ductility D. Corrosion resistance E. Impact resistance
Answer: D. Corrosion resistance
Question 31
The base metal next to the 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. Untempered zone D. Pearlite area E. Base plate
Answer: B. Heat-affected zone
Question 32
Electrical hazards are:
- A. Present in electric arc welders B. Present in secondary leads C. Minimized by proper equipment installation D. More severe in the presence of water or moisture E. All of the above
Answer: E. All of the above
Question 33
Inspection records should:
- A. Be in as much as detail as necessary B. Include explanation of repairs C. State how the work stayed within prescribed tolerances D. All of the above E. B and C above
Answer: D. All of the above
Question 34
Incomplete fusion can be caused by:
- A. Molten metal flooding ahead of the arc B. Insufficient heat input C. Proper joint design D. Any of the above E. A and B above
Answer: E. A and B above
Question 35
What welding symbol below represents the following weld joint?
Gambar soal 35
Answer: E. 5
Question 36
Brazed joints can be destructively tested by which of the following testing methods?
- A. Metallographic B. Peel C. Tension D. All of the above E. None of the above
Answer: D. All of the above
Question 37
A CWI shall have the responsibility of verifying documentation of the following:
- A. records of welder qualifications B. records of tacker qualifications C. records of Welding operator qualifications D. records of Welding Procedure qualifications E. all of the above
Answer: E. all of the above
Question 38
An ultrasonic test of a plate shows a trace on the CRT with peaks as shown below. If the sweep is from left to right, the peak at (2) may indicate:
Gambar soal 38
- A. A flaw at the surface B. A flaw near the center C. A reflection from the back D. A flaw at the back E. There is no flaw indicated on the trace
Answer: B. A flaw near the center
Question 39
Which of the following is sometimes used to control distortion in a weldment?
- A. Peening B. Preheating C. Fixtures and stress relief D. Backstep welding E. All of the above
Answer: E. All of the above
Question 40
An unbroken tensile specimen has a thickness of .59 inch and a width of .73 inch. What is the cross-sectional area in square inches?
- A. .39 B. .40 C. .41 D. .43 E. .44
Answer: D. .43
Question 41
Overexposure to X-rays or gamma rays may cause damage to human:
- A. sexual organs B. blood tissue C. skin D. internal organs E. all of the above
Answer: E. all of the above
Question 42
No. 1 indicates the:
Gambar soal 42
- A. Beads B. weld root C. weld toe D. face reinforcement E. weld face
Answer: D. face reinforcement
Question 43
No. 2 indicates the:
Gambar soal 43
- A. Beads B. weld root C. weld toe D. face reinforcement E. weld face
Answer: E. weld face
Question 44
No. 3 indicates the:
Gambar soal 44
- A. Beads B. weld root C. weld toe D. face reinforcement E. weld face
Answer: C. weld toe
Question 45
No. 4 indicates the:
Gambar soal 45
- A. Beads B. weld root C. weld toe D. face reinforcement E. weld face
Answer: A. Beads
Question 46
No. 5 indicates the:
Gambar soal 46
- A. Beads B. weld root C. weld toe D. face reinforcement E. weld face
Answer: B. weld root
Question 47
The sketch below shows a test procedure for:
Gambar soal 47
- A. shielded metal arc welding (SMAW) B. Gas metal arc welding (GMAW) C. Electro slag welding (ESW) D. Gas tungsten arc welding (GTAW) E. Stud welding (SW)
Answer: E. Stud welding (SW)
Question 48
A triangular-shaped weld symbol represents what type of weld?
- A. Bevel groove B. Flare groove C. Flange groove D. V-groove E. Fillet weld
Answer: E. Fillet weld
Question 49
When welds are going to be hidden or inaccessible for inspection in a finished weldment or structure, they should be inspected:
- A. by methods to provide access to the hidden welds B. after postweld treatment of the completed weldment of structure C. before start of the welding D. during the progress of assembly as welds are completed E. after completion of the work borescope
Answer: D. during the progress of assembly as welds are completed
Question 50
The symbol below shows the configuration of:
Gambar soal 50
- A. U-groove weld B. bevel-groove weld C. J-Groove weld D. fillet weld E. flare-V-Groove weld
Answer: C. J-Groove weld
Question 51
Hardness of the base metals can be affected by which of the following conditions?
- A. Heat treatment B. Cold working of the metal C. Composition of the base and weld metal D. Metallurgical effects of welding process E. All of the above
Answer: E. All of the above
Question 52
In braze welding, flux may be applied by which of the following methods?
- A. using filler rod pre-coated with flux B. introducing flux through oxy fuel gas flame C. brushing the flux on the joint prior to brazing D. all of the above E. A or C above
Answer: D. all of the above
Question 53
Pick the welding process best illustrated by the sketch below:
Gambar soal 53
- A. shielded metal arc welding (SMAW) B. Gas metal arc welding (GMAW) C. Gas tungsten arc welding (GTAW) D. Submerged arc welding (SAW) E. Plasma arc cutting (PAW)
Answer: E. Plasma arc cutting (PAW)
Question 54
Which of the following may an inspector use to perform visual inspection?
- A. magnifier B. micrometer C. fillet weld gauge D. all of the above E. B and C above
Answer: D. all of the above
Question 55
The welding inspector must verify that:
- A. all records are completed by the time hardware is shipped even though they may not have been completed at the end of operations B. records of qualifications, certification, fabrication and testing are completed and that they meet appropriate code and/or specification requirements specified for the job C. all the general points are covered in inspection records, since detail is never allowed in such reports D. the hardware was completed and that the shop promises to complete the records before shipment. E. that the quality manual meets the appropriate quality system national or international standard for welding such as ISO 9000 or GS 9000
Answer: B. records of qualifications, certification, fabrication and testing are completed and that they meet appropriate code and/or specification requirements specified for the job
Question 56
A weld which extends all around the joint is shown at number:
Gambar soal 56
Answer: B. 4
Question 57
An intermittent fillet is shown as number:
Gambar soal 57
Answer: A. 1
Question 58
A plug weld indicating depth of fill is shown as number:
Gambar soal 58
Answer: D. 5
Question 59
A groove weld with melt-through is shown at number:
Gambar soal 59
- A. 2 B. 7 C. 6 D. 3 E. 10
Answer: E. 10
Question 60
The profile of the fillet weld below shows a flaw at no. 1 is known as:
Gambar soal 60
- A. a wagon track B. a toe crack C. underlap D. undercut E. underbead cracking
Answer: D. undercut
Question 61
The fillet weld below shows a flaw at No. 2 is known as:
Gambar soal 61
- A. overlap B. a toe crack C. overfill D. undercut E. toe lamination
Answer: A. overlap
Question 62
The fillet weld below shows a defect at No. 3 is known as:
Gambar soal 62
- A. macro fissure B. incomplete fusion C. piping porosity D. undercut E. an underbead crack
Answer: B. incomplete fusion
Question 63
A CWI shall be familiar with and understand the fundamentals of:
- A. SMAW B. FCAW C. GMAW D. GTAW E. all of the above
Answer: E. all of the above
Question 64
Types of destructive test are?
- A. Tensile test B. Ultrasonic test C. Charpy impact test D. a & c above E. None of the above
Answer: D. a & c above
Question 65
The rate of cooling in a weld bead is slowed by…
- A. Decreasing the heat input per inch of weld B. Preheating the weldment C. Reducing the electrode size D. Increasing the travel speed E. Increasing the amperage and travel speed proportionally
Answer: B. Preheating the weldment
Question 66
The fillet weld break test is used to evaluate the:
- A. Quality of the fractured weld metal B. Compressing strength of the weld joint C. Ductility of weld metal D. Weld’s resistance to lamellar tearing E. Impact strength of the weld joint
Answer: A. Quality of the fractured weld metal
Question 67
Depending on the cause, slag entrapment may be corrected by…
- A. Changing the electrode or flux B. Through slag removal between the passes C. Proper positioning of the joint D. All of the above E. B and C of above
Answer: D. All of the above
Question 68
Inspection report should be…
- A. Clearly written B. Contain all required information C. Readily accessible D. All of the above E. A and B of above
Answer: D. All of the above
Question 69
The weld in the figure No. 1 below is said to be welded in the:
Gambar soal 69
- A. Flat position B. Horizontal position C. Vertical position D. Overhead position E. None of the above
Answer: A. Flat position
Question 70
The weld in the figure No. 2 below is said to be welded in the:
Gambar soal 70
- A. Flat position B. Horizontal position C. Vertical position D. Overhead position E. None of the above
Answer: C. Vertical position
Question 71
The weld in the figure No. 3 below is said to be welded in the:
Gambar soal 71
- A. Flat position B. Horizontal position C. Vertical position D. Overhead position E. None of the above
Answer: A. Flat position
Question 72
Incomplete joint penetration can be caused by:
- A. Insufficient root opening B. Excessive travel speed C. Excessive electrode diameter D. All of the above E. A and C above
Answer: D. All of the above
Question 73
Macro examination will reveal the microstructure of the…
- A. Base metal B. Heat-affected zone C. Fusion zone D. All of the above E. B and C above
Answer: D. All of the above
Question 74
The upper limits of preheat and interpass temperatures for quenched and tempered steel are specified for what reason(s):
- A. Keep deposit rate to a minimum B. Maintain the strength in the base metal heat-affected zone C. Keep the weld metal from becoming too strong D. Avoid cracking in the weldment E. Letters B and D above
Answer: E. Letters B and D above
Question 75
Which of the following is NOT important or essential to good record keeping?
- A. Clearly and concisely stated facts B. A good company policy manual C. Well organized reports presenting a total picture D. Logical sequence to reporting E. All supporting forms, reports and data included or referenced
Answer: B. A good company policy manual
Question 76
The code that covers the welding of steel structures is:
- A. ASME Section IX B. ASME B31.1 C. API 1104 D. AWS D1.1 E. ASME B31.3
Answer: D. AWS D1.1
Question 77
Oxyacetylene welding of 16-gauge steel requires absorptive eye protection of a…
- A. Shade #4 or 5 B. The same absorptive lens as required for submerged arc welding C. Shade #6 or 8 D. Shade #10 or 12 E. Just safety glasses
Answer: C. Shade #6 or 8
Question 78
Liquid penetrant inspection is used for detecting…
- A. Weld undercut B. Excessive weld reinforcement C. Weld discontinuities open to the surface D. Short fillet weld leg size E. Depth of weld penetration
Answer: C. Weld discontinuities open to the surface
Question 79
The SMAW power supply can be:
- A. DCEN B. AC C. DCEP D. All of the above E. A and C above
Answer: D. All of the above
Question 80
A stress relief heat treatment (approximately 1150°F on carbon steel) is intended to…
- A. Change the microstructure of the weld B. Increase the tensile strength of the weld C. Reduce the residual weld stresses across the weld. D. Increase the impact strength of the weld. E. Provide a method of oven heating for the removal of gas pockets trapped in the weld.
Answer: C. Reduce the residual weld stresses across the weld.
Question 81
The liquid penetrant applied to the surface of a test specimen…
- A. flows into discontinuities upon application of developer. B. is adsorbed by discontinuities C. is drawn into a discontinuity by capillary action D. runs into discontinuities by gravity. E. penetrates the surface by chemical action.
Answer: C. is drawn into a discontinuity by capillary action
Question 82
E-7018 electrode has a tensile strength of:
- A. 70000 psi B. 70000 MPa C. 70 ksi D. None of the above E. A & C above
Answer: E. A & C above
Question 83
Mild steel (A36) is more weldable than…
- A. Low carbon steel (A53) B. Medium carbon steel (SAE 1040) C. High carbon steel (SAE 1095) D. All of the above E. B and C
Answer: E. B and C
Question 84
Air carbon arc cutting:
- A. Requires an air supply B. May be done manually or mechanically C. All of the above D. A and B above
Answer: D. A and B above
Question 85
Prior to welding, a CWI should check…
- A. If the welding procedure is qualified in accordance with the contract specification. B. If the welder is qualified for the process and position C. If the joint designs and joint preparations meet the requirements of the welding procedure D. The inspection requirements called out by the contract specs E. All of the above
Answer: E. All of the above
Question 86
A welder may be required to retest because…
- A. He or she fails their initial welding test B. In case there is a change in an essential variable C. His or her ability to deposit sound weld metal is questioned D. All of the above E. B and C above
Answer: D. All of the above
Question 87
A CWI’s records may be used…
- A. to help recall and verify past decisions B. to verify the payment of work invoices C. to verify man-hour records for the shop D. for packing slips for shipping E. all of the above
Answer: A. to help recall and verify past decisions
Question 88
The factor which is most important to the reliability of a test is…
- A. Ease of conducting test B. Cost of required equipment C. Reproducibility of test conditions D. Speed of testing E. Portability of equipment
Answer: C. Reproducibility of test conditions
Question 89
During electroslag welding, cracks may be avoided by maintaining…
- A. Proper electrode feed rate B. Proper current C. Proper spacing between electrodes or guide tubes D. All of the above E. A and C above
Answer: E. A and C above
Question 90
Magnetic particle inspection is most suitable for the detection of…
- A. Surface cracks perpendicular to the magnetic lines of force B. Short fillet throat dimensions of fillet welds C. Lamination in plate that are less than ¼ inch below the surface D. Excessive weld reinforcement in butt joints done with SMAW E. The residual magnetism of a weldment
Answer: A. Surface cracks perpendicular to the magnetic lines of force
Question 91
Hardness test method(s) for metals include(s)…
- A. Rockwell B. Knoop C. Vickers D. Brinell E. All of the above
Answer: E. All of the above
Question 92
The weld face refers to the…
- A. Surface of a cross section of the weld B. Appearance of the heat-affected zone C. Original groove face D. Exposed surface of the weld on the side from which welding was done E. Exposed surface of the weld on the side opposite from which welding was done
Answer: D. Exposed surface of the weld on the side from which welding was done
Question 93
A welding inspector must be ethical primarily in order to…
- A. Ensure that the employer receives fair value for inspection fees B. Render impartial decisions C. Reject every weld the first time of inspection D. Safeguard the public’s health and well-being E. B and D above
Answer: B. Render impartial decisions
Question 94
A welder performing SMAW with too high travel speed can…
- A. Decrease penetration B. Cause undercutting at the edges of the weld C. Cause difficulty in slag removal D. All of the above E. A and B above
Answer: D. All of the above
Question 95
The only forms that may be used for welding qualification records are shown in the AWS and ASME code books. The above statement is…
- A. True B. False C. True only for city government owned weldments D. Not to be verified by a CWI E. True, except for approved computer-generated records keeping systems
Answer: B. False
Question 96
What should be known for proper interpretation of liquid penetrant indications?
- A. Previous manufacturing processes performed on the part B. Technique used in applying and removing the penetrant C. Method used to clean part prior to inspections D. All of the above E. None of the above
Answer: D. All of the above
Question 97
Which of the following is an advantage of fluorescent penetrants over visible dye penetrants?
- A. The inspection can be carried out in a well-lighted area B. Small indications are more easily seen C. It can be used where contact with water is objectionable D. It is less sensitive to contamination of discontinuities E. The dye requires no vehicle or solvent
Answer: B. Small indications are more easily seen
Question 98
Shielding gases used for GMAW include…
- A. Helium B. Argon C. CO2 D. All of the above E. Letters A and B above
Answer: D. All of the above
Question 99
Reverse polarity is a nonstandard term for…
- A. Direct current electrode positive B. Direct current electrode negative C. Direct current straight polarity D. Direct current reverse polarity E. None of the above
Answer: A. Direct current electrode positive
Question 100
Under most code rules, welders may be qualified by their employers providing they have…
- A. Been employed for a minimum of six months B. Qualified by at least one previous employer C. Passed a prescribed set of tests D. A and B above E. A and B above
Answer: C. Passed a prescribed set of tests
Question 101
Destructive tests of welds are designed to…
- A. Determine the mechanical properties (i.e. tensile strength, ductility, toughness) B. Determine the Modulus of Elasticity of a weld metal C. Calculate the percent of reduction in area for an all-weld-metal specimen D. Determine the soundness of weld metal E. All of the above
Answer: E. All of the above
Question 102
In comparison to surface cracks, the sensitivity of magnetic particle inspection to flaws ¼-inch or more below the surface of a thick weld is:
- A. generally, much less B. approximately equal C. nearly equal if the flaws are fine non-metallic strings D. nearly equal if the internal and external flaws have equal widths E. greater if the flaws are located near the weld’s axis and AC current is used
Answer: A. generally, much less
Question 103
The welding inspector should evaluate critical joint fit-ups before welding begins. Which of the following is NOT an essential part of the evaluation?
- A. Tack welds B. Root opening C. Post heat temperature D. Edge preparation E. Dimensions and alignment
Answer: C. Post heat temperature
Question 104
Torch brazing is accomplished by the use of:
- A. a neutral oxyfuel gas flame B. a slightly reducing oxyfuel gas flame C. an air-fuel gas flame D. all of the above E. A and C above
Answer: A. a neutral oxyfuel gas flame
Question 105
Which of the following defects does NOT occur when a weld is made by the GTAW process?
- A. Porosity B. Slag inclusions C. Cracks D. Incomplete fusion E. Overlap
Answer: B. Slag inclusions
Question 106
Capillary action plays a role in which NDT method?
- A. ET B. UT C. RT D. PT E. MT
Answer: D. PT
Question 107
The qualification of a CWI covers the responsibility to…
- A. specify welding procedures B. compute allowable stresses C. perform radiographic examinations D. conduct test for analysis of base material composition E. none of the above
Answer: E. none of the above
Question 108
When other welding variables are held constant, increasing the welding current during
- A. FCAW will B. Increase electrode deposition rate C. Increase penetration D. Produce concave weld beads with poor appearance E. All of the above
Answer: D. Produce concave weld beads with poor appearance
Question 109
Yield strength may be determined by:
- A. tension tests B. charpy tests C. hardness tests D. none of the above E. A or C above
Answer: A. tension tests
Question 110
Which of the following is/are used to perform MT?
- A. coloured ferro-magnetic oxide powders B. AC and DC articulated leg yokes C. DC coils D. all of the above E. only A and C above
Answer: D. all of the above
Question 111
Which test is not considered a ‘soundness test’?
- A. Hardness B. Face bend C. Fillet break D. Root bend E. Nick break Answer: A. Hardness
Question 112
Any records that require the fabricator’s signature should be prepared by:
- A. the inspector B. the fabricator C. both the shop foreman and the inspector D. the QA Manager E. an engine
Answer: B. the fabricator
Question 113
Preheat is sometimes used for shielded metal arc welding of materials which have very high thermal conductivity. Preheat, in this case:
- A. Reduces the amperage required for welding B. Improves penetration C. Aids fusion D. All of the above E. A and B above
Answer: D. All of the above
Question 114
Direct current electrode positive means the work piece is connected to… A. “reversible” (alternating) current B. the positive terminal C. the negative terminal D. all of the above E. none of the above
Answer: C. the negative terminal
Question 115
A traveller, or production plan, requires UT examination of the faying surface of a weld joint. The faying surface is described as…
- A. The surface of the joint which will be ground upon completion of welding B. The face-side of a weldment C. The surface of a weldment which will come in contact with any other surface D. B or C above E. The mating surface of a member that is in contact with or in close proximity to another member to which it is to be joined
Answer: E. The mating surface of a member that is in contact with or in close proximity to another member to which it is to be joined
Question 116
To maintain weld quality during Arc Stud Welding it is necessary to:
- A. have sufficient welding power B. use DC Electrode Negative (straight polarity) for aluminium C. make test welds before starting D. A and B above E. A and C
Answer: E. A and C
Question 117
The Charpy V-Notch impact test is…
- A. the most common fracture toughness test B. often used in specifying minimum acceptance criteria for base metal C. often used for welding procedure qualification D. all of the above E. A and C above
Answer: D. all of the above
Question 118
What aspects of fabrication can be checked through visual inspection during welding?
- A. Sequence of weld passes B. Inter pass cleaning C. Proper preheat D. All of the above E. A and B above
Answer: D. All of the above
Question 119
Which of the following could interfere with liquid penetrant testing?
- A. an oily surface B. a wet surface C. a rough weld D. all of the above E. only A and B above
Answer: D. all of the above
Question 120
The distance between the tip of the welding electrode and the weld surface is called… A. Arc force B. Arc length C. Arc blow D. Arc strike E. Arc chamber
Answer: B. Arc length
Question 121
The certified welding inspector may be required to verify the following records are maintained… A. Welding procedure qualification B. Control of welding materials C. Welder qualification D. All of the above E. A and C above
Answer: D. All of the above
Question 122
Optimum results are more likely when EXX16 and EXX18 low-hydrogen electrodes:
- A. used with a long arc on downhill welding and a short arc on uphill welding B. stored in refrigerator when the container has been opened C. stored in a holding oven at proper temperature D. used with a “whipping” technique on light gage metal E. replaced with EXX13 electrodes on vertical work
Answer: C. stored in a holding oven at proper temperature
Question 123
Guided bend specimens may be:
- A. longitudinal or transverse to the weld axis B. bend in tensile test machines C. bend in wrap-around bend test jigs D. all of the above E. A and C above
Answer: D. all of the above
Question 124
Brazed joints can be inspected by which of the following testing methods:
- A. ultrasonic B. leak C. torsion D. any of the above E. A and B above
Answer: D. any of the above
Question 125
Manufacturers recommend that E7018 electrodes be used with a “short arc” welding technique. This helps…
- A. Speed the metal transfer across the arc B. Maintain good shielding of the molten weld pool C. In welding thin sheet metal D. Root pass “whipping” burn through E. The GMAW process weld as sheet metal
Answer: B. Maintain good shielding of the molten weld pool
Question 126
Why should the CWI keep accurate and up-to-date records and reports?
- A. to keep the superintendent informed B. to impress the chief inspector C. so that he can write better procedures D. to satisfy government agencies E. to assure compliance with standards and specifications
Answer: E. to assure compliance with standards and specifications
Question 127
If a welding inspector feels he or she is not qualified to make judgment as to the acceptability of a weldment, he or she should:
- A. Do the best he or she can and report accordingly B. Call for assistance from someone who is qualified C. Wait to make judgment until he or she has had time to get additional training D. Stop all work until procedures are developed within the inspector’s qualification E. Allow work to continue because further welder experience will improve
Answer: B. Call for assistance from someone who is qualified
Question 128
Ultrasonic waves can be coupled to the test object effectively…
- A. through a film of oil B. through a film of air C. through a layer of water D. through a layer of grease E. A, C and D above
Answer: E. A, C and D above
Question 129
When the weld structure is to be examined at magnifications over 10x, ______ are used.
- A. Macro-specimens B. Micro-specimens C. Tensile specimens D. Charpy specimens E. Chemical tests
Answer: B. Micro-specimens
Question 130
Plasma Arc Cutting (PAC) is better suited than Oxyfuel Gas Cutting (OFC) for cutting…
- A. Ferrous sheet metal B. Nonferrous metals (i.e. aluminium, copper, brass, etc.) C. Any metals with a thickness over ½-inch D. Stainless steel sheet and plate E. A, B and D above
Answer: E. A, B and D above
Question 131
What is meant by " buttering a groove face?
- A. a form of surfacing in which one or more layers of weld metal is (are) deposited on the surface m(s) of the joint(s) to be subsequently welded B. a surfacing variation to achieve required dimensions C. a surfacin g variat ion to achieve metallurgical characteristics such as corrosion resistance D. the condition which results iii metal melt-thru E. none of the above
Answer: A. a form of surfacing in which one or more layers of weld metal is (are) deposited on the surface m(s) of the joint(s) to be subsequently welded
Question 132
A welding procedure specification (WPS) has been qualified for production Welding with the GMAW (short circuiting transfer process , Which condition (s)Below is correct for a welder qualified only for FCAW regarding production Welding using the GMAW WPS? The welder has been checked out on the GMAW equipment, allowing him/her to weld GMAW for produ ction:
- A. The welder's supervisor assigned him to the job, which qualifies him/her because the supervisor knows the welder's abil ity B. The welder has welded with GMAW process in the past, qualifying him/her for production welding with GMAW C. Th e welder is qualified to weld FCAW only and is not qualified to weld the procedure parts D. If the welder i s qualified with FCAW, he/she is qualified for GMAW short circuiting t transfer because FCAW is more difficul t to proces s
Answer: C. The welder is qualified to weld FCAW only and is not qualified to weld the procedure parts
Question 133
An inspector may check which of the following during welding?
- A. preheat and interpass temperature requirements and measuring methods B. filler metal control and handling C. use of welders qualified for specific operations D. all of the above E. A and B above
Answer: D. all of the above
Question 134
Gas Metal Arc Welding ( GMAW ) is suitable for what metals? A. carbon steel B. stainless steel C. aluminium D. all of the above E. A and B above
Answer: D. all of the above
Question 135
For SMAW, which of the following require (s) higher preheat temperature? A. high carbon steels B. low hydrogen electrodes C. high strength low allo7 steels D. all of the above E. A and C above Answer: E. A and C above
Question 136
A welding performance qualification test serves to...
- A. determine a welder's reliability B. determine the mechanical properties of a weldment C. provide statistical input for the purpose of estimating the ratio of accepted /rejected welds D. determine the welder's ability to deposit or produce sound weld metal E. A and C above
Answer: D. determine the welder's ability to deposit or produce sound weld metal
Question 137
At which of the following times should the CWI Inspect to assurance compliance with the welding procedure?
- A. Only during the qualification activity B. Prior to, during and after production welding C. When requested to by the welding foreman D. Once each job E. Approximately every 6 months
Answer: B. Prior to, during and after production welding
Question 138
A welding inspection should ....
- A. make sure records meet specified requirements B. make sure records are available when needed C. make sure records are in as much detail as 'necessary D . all of the above
Answer: D. all of the above
Question 139
Low hydrogen should be stored...
- A. at 350°F the container is ready to be opened B. at 350°F until the container is ready to be 'opened C. in open cans located around the job site ready for use D. In open air E. No need of storage
Answer: B. at 350°F until the container is ready to be 'opened
Question 140
Which one of the following conditions will affects the rate and extent a liquid penetrant will enter cracks, fissures, and other small opening?
- A. the hardness of the specimen being tested B. the surface condition of the specimen being tested C. the color of the penetrant D. the conductivity of the specimen being tested E. the magnetic field residual in the specimen
Answer: B. the surface condition of the specimen being tested
Question 141
A proper travel speed is essential to good welding performance. Which of the following factors influence (s) travel speed:
- A. Surface condition of the base metal B. joint fit-up C. welding current D. All of the above E. A and B above
Answer: D. All of the above
Question 142
In film radiography, IQI's (pentameters) in most instances are placed to show the quality of the radiograph for the least favorable geometry. Which of the following answers would be correct for the placement of the IQI for least favorable geometry?
- A. between the intensifying screen and the film B. on the source side of the test object C. on the film side of the test object D. between the operator and the radiation source E. at the window of the X-ray tube
Answer: B. on the source side of the test object
Question 143
The hardness of a ferrous material...
- A. is the ability to withstand a sudden blow B. is the ability to withstand indentation C. cannot be estimated by a bend test D. has no useful purpose to the inspector E. can be measured by the Izod test
Answer: B. is the ability to withstand indentation
Question 144
During examination of a production weldment, the inspector noted that discontinuity indications found by the method were not found by the PT method. What does that indicate?
- A. there are no flaws B. the discontinuities are all on the surface C. the discontinuity sizes are too small for PT sensitivity D. the discontinuities are not exposed to the surface E. None of the above
Answer: D. the discontinuities are not exposed to the surface
Question 145
Acetylene becomes unstable above what pressure?
- A. 5 psi B. 10 psi C. 15 psi D. 30 psi E. None of the above
Answer: C. 15 psi
Question 146
Visual Testing is a:
- A. Destructive Testing B. Nil Destructive Testing C. a & b above D. Non-Destructive Testing E. None of the above
Answer: D. Non-Destructive Testing
Question 147
Brazing differs from welding in that:
- A. No filler metal is used B. An oxyfuel flame is used C. The base metal is not melted D. All of the above E. None of the above
Answer: C. The base metal is not melted
Question 148
Which metal properties are directly related?
- A. Conductivity and strength B. Strength and ductility C. Strength and hardness D. Ductility and toughness E. c and d above
Answer: E. c and d above
Question 149
In the case of plug or slot weld, a dimension placed within the weld symbol would indicate?
- A. Depth of filling B. Slot weld width C. Plug weld diameter D. Angle of countersink E. None of the above
Answer: A. Depth of filling
Question 150
The type of weld produced by filling an elongated hole in an overlapping member attaching it to the member beneath is called a?
- A. Plug weld B. Spot weld C. Seam weld D. Slot weld E. None of the above
Answer: D. Slot weld
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