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Welding 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 buttd. It is not normally a defect associated with the MMA welding process

2. What is the leg length of a fill?

a. The distance from the toe to faceb. The distance from the root to face center c. The distance from the root to the toed. 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 faceb. The distance from the root to face center c. The distance from the root to the toed. The distance from toe to toe

4. Lap joints contain:

a. Fillet welds b. Corner joints c. Butt-weldsd. 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 consumablesc. Measure residual stressd. Check calibration certificates

6. Under most conditions, which of the following welding positions will deposit the most weld metal?a. Vertical down b. Overheadc. Horizontal-vertical d. Flat ( down hand )

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7. What is meant by the term crater pipe:

a. Another term for concave rootb. Another term given for a burn throughc. 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 metalc. The boundary between the fusion zone and the HAZd. 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 lengthb. Throat thickness c. Weld thickness d. All of the above

10. A crater crack may also be termed:

a. Cold crack b. Tearingc. Fatigue crack d. Star crack

11. Which of the following welding processes / technique is likely to be used for the repair welding of localized porosity in a butt weld?a. MMA, PG position b. Mechanized MAG c. Submerged arcd. All of the abovee. None of the above

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 weldb. A single-bevel butt weld c. A plug weldd. A single-U butt weld

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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 inclusionsc. Hydrogen cracks d. All of the above

14. Root concavity is caused by:

a. Excessive back purge pressure and entrapped gasb. Excessive back purge pressure and very high heat inputs c. Excessive root grinding and a slow travel speedd. Excessive root grinding and excessive back purge pressure

15. When inspecting a critical component, the toes of a weld must be :

a. Always ground flushb. Must always overlap at least 1.5 mm onto the parent materialc. 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 inspectiond. 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 writingc. Qualifying welders d. All of the above

18. Which of the following is most likely to cause a burn through?a. Root gap too smallb. Travel speed too fast c. Root faces 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 rateb. 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

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that has undergone microstructural changes?a. Heat affected zone b. The weld zonec. Fusion zoned. All of the above terms may be used

21. When carrying out visual inspection, which defects (s) is likely to be missed?

a. Linear misalignment b. Cap undercutc. Porosityd. Lack of fusion (inter run)

22. Cold lapping is another term for:

a. Lack of fusion at the toe of a weldb. Lack of fusion between weld metal and weld metal c. Undercut at the toe of a weldd. 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 smalld. Electrode diameter too small

24. Crater cracks are caused mainly by:

a. Excessively fast welding speeds b. Improper electrode anglec. Hot shrinkaged. Improper joint design

25. On a single-V butt weld, the distance through the center of the weld from root to face is called:a. Reinforcement b. Penetrationc. Throat thicknessd. None of the above

26. The throat thickness of a ¾ inch fillet weld is?

a. 27.5 mm b. 24 mmc. 13.5 mm d. 12.5 mm

27. The need for pre-heat for steel will increase if:

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a. The material thickness reduces b. Faster welding speedsc. 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 of 6 mm thick plate?a. Double-V buttb. Asymmetrical double-V butt c. Single-U buttd. Single-V butt

29. A welding inspectors main attributes include:

a. Knowledgeb. 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 onlyc. After welding activities only d. None of the above

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