50 Question PT quiz

1. Which of the following is an advantage of solvent wipe methods over water washing?

2. The tendency of a liquid penetrant to enter a discontinuity is primarily related to:

3. The most difficult developers to remove are the

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

5. The greater the blacklight intensity and the lower the ambient white light intensity

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

7. The part is a 12.5 mm (1/2) thick aluminium plate with a Vee weld. Description - the indication appears in an area that is somewhat dish-shaped. The indication extends out from the centre in a spoke formation. The indication is:

8. A crack type discontinuity will generally appear as:

9. Fluorescent materials used in fluorescent penetrants respond most actively to radiant energy, of a wavelength of approximately:

10. Which of the following is TRUE concerning final inspection after fluorescent penetrant processing?

11. Water washable penetrants are the best type of penetrant to use when:

12. When carrying out penetrant leak testing:

13. An NDT procedure specifies a minimum penetrant dwell period of 30 minutes. What dwell period should be used if the component was to be inspected at a temperature of 5 degrees Celsius?

14. Electrostatic application of penetrant materials is preferred because

15. Shrinkage cracks or hot tears are usually found in what areas of a casting?

16. When improper processing causes inspection difficulties, what should the inspector do?

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

18. The tendency of a liquid penetrant to enter a discontinuity is primarily related to:

19. Which of the statements below best states the danger of using sandblasting for cleaning surfaces to be penetrant tested?

20. Which system would provide maximum sensitivity for detection of fatigue cracks in an aircraft wheel?

21. Which of the following methods for applying non-aqueous developer is normally considered most effective?

22. 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?

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

24. Which factor would apply in determining the dwell time required for the penetrant to be effective?

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

26. The emulsifier is used:

27. Cast grey iron would be inspected using what inspection technique:

28. An important difference between non-water-washable penetrants and water-washable penetrants is that:

29. A commonly-used method of checking the overall performance of a penetrant system is:

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

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

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

33. Developer assists in the detection of the visible dye penetrant test indications by:

34. 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:

35. Which of the following statements concerning developers is NOT true?

36. An important difference between non water soluble penetrants and water washable penetrants is:

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

38. 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?

39. Which of the statements below concerning the operation of the black light bulbs of the mercury arc type is NOT true?

40. 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:

41. Which of the following is true concerning drying of parts in an oven prior to application of dry developer?

42. Which of the following penetrant inspection processes is generally agreed to be the most sensitive and reliable?

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

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

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

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

47. A term used to define defect is:

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

49. Different types of discontinuities in various materials require different penetration limes. In general, fine, tight cracks require:

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

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