Q. Which of the following types of pre-cleaning processes may be used for liquid penetrant testing?
✅ Correct Answer: (D)
Any process that leaves the part clean and dry, does not harm the part and is
Non Destructive Testing and Evaluation MCQs | Page - 1
Dear candidates you will find MCQ questions of Non Destructive Testing and Evaluation here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.
Q. What is the likely result of incomplete removal of all excess penetrant from the test piece surface?
✅ Correct Answer: (A)
Formation of false indications
Q. What is the preferred pre-cleaning process for removal of oil and grease :
✅ Correct Answer: (B)
Vapour degreasing
Q. Which pre-cleaning method may be used with either a solvent or a detergent solution?
✅ Correct Answer: (A)
Ultrasonic cleaning
Q. What is the danger associated with using a wire brush during pre-cleaning?
✅ Correct Answer: (D)
The wire brush may close or smear metal over
Q. What is the preferred method of removing paint prior to performing a penetrant testing?
✅ Correct Answer: (B)
Chemical removers
Q. What additional surface preparation or cleaning must be performed on a machined or ground aluminium casting prior to penetrant testing?
✅ Correct Answer: (B)
Etching
Q. Acceptable methods of penetrant application are:
✅ Correct Answer: (D)
All of the above
Q. The time period during which penetrant remains on the surface of the test piece is called:
✅ Correct Answer: (A)
Dwell time
Q. Excess penetrant removal is a two step process with which of the following penetrant methods?
✅ Correct Answer: (B)
Post emulsifiable
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