50 Question PT quiz

1. The main purpose of the filter on a black light source is to:

2. Rejection or acceptance of parts should be based on which of the following, in absence of written acceptance criteria?

3. How is the degree of washing assessed when removing fluorescent penetrant:

4. Which of the following is most apt to render the post-emulsification test ineffective?

5. Why is it advisable to have a black light installed at the wash station?

6. Which of the following is a discontinuity that might be found in a forging?

7. Which of the following is a purpose of the drying process used in penetrant testing?

8. Which of the following is an advantage of fluorescent penetrants over visible type penetrants?

9. A commonly used method of checking the overall performance of a penetrant system is by:

10. The term non-relevant indication is used to describe certain types of penetrant testing indications. Which of the following would be a typical non-relevant indication?

11. The sulphur found in penetrant materials are detrimental to:

12. A part being processed through a fluorescent water-washable penetrant system was inadvertently left to drain overnight after the application of penetraut. What action should be taken?

13. Which of the following types of discontinuities will not be detected by the liquid penetrant test method?

14. Electrostatic application of penetrant materials is preferred because

15. What is the most common purpose of non-destructive testing?

16. Pickling is a process used to

17. Which of the following contaminants could affect the sensitivity of a penetrant?

18. Tests for penetrant sensitivity may best be conducted using:

19. Which of the following discontinuities are all castings discontinuities?

20. When conducting a penetrant test, spherical indications on the surface of a part could be indicative of:

21. Penetrant residues may become entrapped under splines, fasteners, rivets, etc. Which of the following is the most likely reaction caused by such a residue?

22. The ability of a penetrant to detect surface breaking discontinuities and provide an indication visible to the unaided eye is called:

23. Which of the following physical properties, more than any other, determines what makes material a good penetrant?

24. Dry developer should be applied:

25. When performing a liquid penetrant test using solvent removable visible dye penetrant one method listed below is generally regarded as most suitable for giving accurate test results?

26. The factor that has the greatest effect on the speed at which a penetrant indication forms is:

27. Which of the following is a recommended method of application of lipophilic emulsiflers?

28. The part is an aluminium casting. Description - the casting has a very complex design. In one section there is a flat area having a thickness of 3 mm (1/8). In the centre of this area is a round section, 50mm (2) thick and 25mm (1) in diameter. There are linear indications about one-half the distance around the base where it joins into the thin section. The indication is termed:

29. The part is an aluminium forging. Description - the indication is sharp, half-moon shape, not deep, and is called a:

30. The flash point of a fluorescent penetrant is:

31. When penetrant testing for shallow discontinuities using a post emulsification penetrant, the emulsification time should belong enough to:

32. A part has been tested using a solvent-removable visible (red dye) penetrant. Which of the following is true if the part is to be tested at a later date?

33. Localized heating of steel objects can result in

34. Sensitiviy of the inspection may be reduced with water-washable fluorescent penetrant by

35. One of the differences between the hydrophffic and lipophilic post-emulsifiable penetrant systems is:

36. Prior to penetrant testing of a previously machined soft metal part, which of the cleaning methods listed below would best remove any smeared metal that could mask discontinuities?

37. Of the methods listed below, the most effective means of precleaning a test item prior to a penetrant test is:

38. If the ultra-violet lamp being used for inspection has a cracked filter:

39. Water-washable liquid penetrants differ from post-emulsification penetrants in that water-washable penetrants:

40. An overhaul facifity regularly penetrant tests aluminium alloy aircraft wheels from service in order to detect fatigue cracks. Which of the following would be the most efficient final cleaning process before penetrant testing?

41. Which of the following discontinuities might be found in rolled plate?

42. Which of the following (on the basis of cost-efficiency) NOT recommended for penetrant application and dwell?

43. Which of the following is not a recommended method of removing grease from a surface of a part to be penetrant tested?

44. A penetrant indication, suspected of resulting from a small crack, is found in a titanium compressor blade. Which of the following NDT methods would most reliably confirm that a crack is present?

45. Some alloys are susceptible to corrosion or embrittlement due to the chemical action between the alloy and penetrant. This problem can be avoided after inspection by:

46. When carrying out penetrant leak testing:

47. A term used to define defect is:

48. During a penetrant test, water was used to remove the surface penetrant after the penetrant dwell. The surface:

49. The penetrant indication for a cold shut on the surface of a casting will be:

50. Prior to penetrant testing of a soft metal part, which of the following cleaning methods would best remove any smeared metal?

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