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Welding Inspection, Steels – WIS 5
Multi – Choice Question Paper ( MSR – WI – 1)
Name : H. Muhammad Razali Karnen
Answer all questions
1. Which of the following butt-weld preparations is usually the most susceptible to lack of sidewall fusion during the manual Metal arc process ?
a. A double-U butt b. A single-V butt c. A double-V butt
d. It is not normally a defect associated with the MMA welding process 2. What is the leg length of a fil
a. The distance from the toe to face
b. The distance from the root to face center c. The distance from the root to the toe d. The distance from toe to toe
3. What is the throat thickness of a fillet weld ( equal leg lengths ) a. The distance from the toe to face
b. The distance from the root to face center c. The distance from the root to the toe d. The distance from toe to toe
4. Lap joints contain : a. Fillet welds b. Corner joints c. Butt-welds d. Single-bevel butts
5. A duty not normally undertaken by a welding inspector is to : a. Check the condition of the parent material
b. Check the condition of the consumables c. Measure residual stress
THE WELDING INSTITUTE 6. Under most conditions, which of the following welding positions will deposit the most weld
metal.
a. Vertical down b. Overhead
c. Horizontal-vertical d. Flat ( down hand )
7. What meant by the term crater pipe : a. Another term for concave root
b. Another term given for a burn through c. A type of gas pore, found in the weld crater d. A shrinkage defect, found in the weld crater 8. What is meant by the term weld junction ?
a. The area containing the HAZ and the weld metal b. The weld metal and parent metal
c. The boundary between the fusion zone and the HAZ
d. The part of the weld, which has undergone metallurgical changes due to the heat from welding
9. The strength of a fillet weld is primary controlled by : a. Leg length
b. Throat thickness c. Weld thickness d. All of the above
10. A crater crack may also be termed : a. Cold crack
b. Tearing c. Fatigue crack d. Star crack
11. Which of the following welding processes / technique is likely to be used for the repair welding of localised porosity in a butt weld ?
a. MMA, PG position b. Mechanised MAG c. Submerged arc d. All of the above e. None of the above
THE WELDING INSTITUTE 12. Which of the following welds would be considered in a situation where two plates are to be
joined that overlap ( assume no external assess ) a. A fillet weld
b. A single-bevel butt weld c. A plug weld
d. A single-U butt weld
13. In the MMA welding process, which of the following is most likely to be caused by a welder with a poor technique
a. Deep weld craters / crater cracks b. Copper inclusions
c. Hydrogen cracks d. All of the above
14. Root concavity is caused by :
a. Excessive back purge pressure and entrapped gas
b. Excessive back purge pressure and very high heat inputs c. Excessive root grinding and a slow travel speed
d. Excessive root grinding and excessive back purge pressure 15. When inspecting a critical component, the toes of a weld must be :
a. Always ground flush
b. Must always overlap at least 1.5 mm onto the parent material
c. Must always be inspected using a crack detection method ( MPI, DPI ) d. None of the above can be selected – specification requirements unknown
16. When carrying out visual inspection, the specification makes no mention of the requirements for visual inspection, in this situation what should you do ?
a. Carry out normal visual inspection b. Seek advice from higher authority c. Carry out no visual inspection
d. Re-write the requirements of the specification
17. Under most circumstances, which of the following do you consider to be duties of a welding inspector
a. The supervision of welders b. Procedure writing
c. Qualifying welders d. All of the above
THE WELDING INSTITUTE a. Root gap too small
b. Travel speed too fast c. Root face too small d. all of the above
19. In an arc welding process, which of the following is the correct term used for the amount of weld metal deposited per minutes ?
a. Filling rate b. Deposition rate c. Weld deposition d. Weld duty cycle
20. What is the term given for the area of a welded joint just outside the weld metal that has undergone microstructural changes ?
a. Heat affected zone b. The weld zone c. Fusion zone
d. All of the above terms may be used
21. When carrying out visual inspection, which defect (s) is likely to be missed ? a. Linear misalignment
b. Cap undercut c. Porosity
d. Lack of fusion ( inter run ) 22. Cold lapping is another term for :
a. Lack of fusion at the toe of a weld
b. Lack of fusion between weld metal and weld metal c. Undercut at the toe of a weld
d. Both a and b
23. Incomplete root penetration is most likely due to : a. Welding speed too slow
b. Welding current too high c. Root gap too small
d. Electrode diameter too small 24. Crater cracks are caused mainly by :
a. Excessively fast welding speeds b. Improper electrode angle c. Hot shrinkage
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25. On a single-V butt weld, the distance through the center of the weld from root to face is called :
a. Reinforcement b. Penetration c. Throat thickness d. None of the above
26. The throat thickness of a ¾ inch fillet weld is ? a. 27.5 mm
b. 24 mm c. 13.5 mm d. 12.5 mm
27. The need for pre-heat for steel will increase if : a. The material thickness reduces
b. Faster welding speeds
c. The use of a larger welding electrode d. All of the above
28. Which of the following butt weld preparations is most likely to be considered for welding the welding of welding of a 6 mm thick plate ?
a. Double-V butt
b. Asymmetrical double-V butt c. Single-U butt
d. Single-V butt
29. A welding inspectors main attributes include : a. Knowledge
b. Honesty and integrity c. Good communicator d. All of the above
30. A code of practice for visual inspection should cover : a. Before, during and after welding
b. Before welding activities only c. After welding activities only d. None of the above
