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- Question 1 of 79
1. Question
1. Liquid penetrant testing is based on the principle of:
CorrectIncorrect - Question 2 of 79
2. Question
2. When a small diameter tube is placed in a glass of water, water rises in the tube to a
level above the adjacent surface. This is calledCorrectIncorrect - Question 3 of 79
3. Question
3. How is the size of a liquid penetrant indication usually related to the discontinuity it
representsCorrectIncorrect - Question 4 of 79
4. Question
4. A penetrant that is self-emulsifying is called
CorrectIncorrect - Question 5 of 79
5. Question
5. A penetrant process which employs an emulsifier as a separate step in the penetrant
removal process is called:CorrectIncorrect - Question 6 of 79
6. Question
6. A penetrant process in which excess penetrant is removed with an organic solvent is
called:CorrectIncorrect - Question 7 of 79
7. Question
7. Which of the following statements accurately describes the capabilities of liquid
penetrant testing?CorrectIncorrect - Question 8 of 79
8. Question
8. Which of the following discontinuity types could typically be found with a liquid
penetrant test?CorrectIncorrect - Question 9 of 79
9. Question
9. Which of the following chemical elements are normally held to a minimum in liquid
penetrant materials, when testing stainless steel and titanium?CorrectIncorrect - Question 10 of 79
10. Question
10. Which of the following chemical elements are normally held to a minimum in liquid
penetrant materials when testing nickel based alloys?CorrectIncorrect - Question 11 of 79
11. Question
11. Which of the following is the most desirable method of pre-cleaning a test piece prior
to penetrant testing?CorrectIncorrect - Question 12 of 79
12. Question
12. Which of the following pre-cleaning processes is not recommended?
CorrectIncorrect - Question 13 of 79
13. Question
13. A wire brush should be used for pre-cleaning:
CorrectIncorrect - Question 14 of 79
14. Question
14. A hydrometer is used to measure
CorrectIncorrect - Question 15 of 79
15. Question
15. Visible, solvent removable penetrants are most advantageous for:
CorrectIncorrect - Question 16 of 79
16. Question
16. For adequate test results, the black light used in fluorescent penetrant examination
should provide what minimum black light intensity at the test surface?CorrectIncorrect - Question 17 of 79
17. Question
17. What minimum warm-up time is required for acceptable performance of a mercury
Vapour arc black light?CorrectIncorrect - Question 18 of 79
18. Question
18. Which of the following penetrants contains an emulsifying agent?
CorrectIncorrect - Question 19 of 79
19. Question
19. Which of the following penetrants must be treated with an emulsifier prior to water
removal?CorrectIncorrect - Question 20 of 79
20. Question
20. What is the function of an emulsifier?
CorrectIncorrect - Question 21 of 79
21. Question
21. An oil based emulsifier is called
CorrectIncorrect - Question 22 of 79
22. Question
22. A water based emulsifier is called:
CorrectIncorrect - Question 23 of 79
23. Question
23. Methylene chloride, isopropyl, alcohol, naptha and mineral spirits are examples of:
CorrectIncorrect - Question 24 of 79
24. Question
24. What type of solvent removers may be used with a solvent removable penetrant?
CorrectIncorrect - Question 25 of 79
25. Question
25. Which of the following is a prerequisite for a penetrant test?
CorrectIncorrect - Question 26 of 79
26. Question
26. Which of the following types of pre-cleaning processes may be used for liquid
penetrant testing?CorrectIncorrect - Question 27 of 79
27. Question
27. What is the likely result of incomplete removal of all excess penetrant from the test
piece surface?CorrectIncorrect - Question 28 of 79
28. Question
28. What is the preferred pre-cleaning process for removal of oil and grease :
CorrectIncorrect - Question 29 of 79
29. Question
29. Which pre-cleaning method may be used with either a solvent or a detergent solution?
CorrectIncorrect - Question 30 of 79
30. Question
30. What is the danger associated with using a wire brush during pre-cleaning?
CorrectIncorrect - Question 31 of 79
31. Question
31. What is the preferred method of removing paint prior to performing a penetrant
testing?CorrectIncorrect - Question 32 of 79
32. Question
32. What additional surface preparation or cleaning must be performed on a machined or
ground aluminium casting prior to penetrant testing?CorrectIncorrect - Question 33 of 79
33. Question
33. Acceptable methods of penetrant application are:
CorrectIncorrect - Question 34 of 79
34. Question
34. The time period during which penetrant remains on the surface of the test piece is
called:CorrectIncorrect - Question 35 of 79
35. Question
35. Excess penetrant removal is a two step process with which of the following penetrant
methods?CorrectIncorrect - Question 36 of 79
36. Question
36. A developer aids penetrant bleed out because of:
CorrectIncorrect - Question 37 of 79
37. Question
37. In the solvent removable penetrant process, excess penetrant is removed with
CorrectIncorrect - Question 38 of 79
38. Question
38. Water based wet developer is applied:
CorrectIncorrect - Question 39 of 79
39. Question
39. Non-aqueous wet developer is applied:
CorrectIncorrect - Question 40 of 79
40. Question
40. Dry developer is applied
CorrectIncorrect - Question 41 of 79
41. Question
41. Typical ranges of emulsifier dwell times are
CorrectIncorrect - Question 42 of 79
42. Question
42. Actual emulsification times are determined by:
CorrectIncorrect - Question 43 of 79
43. Question
43. The colour of fluorescent penetrant under the presence of a UV light is:
CorrectIncorrect - Question 44 of 79
44. Question
44. What action is necessary if the penetrant is inadvertently allowed to dry on the test
piece?CorrectIncorrect - Question 45 of 79
45. Question
45. What maximum water rinse pressure is considered safe for removal of excess
penetrant in the water washable penetrant process?CorrectIncorrect - Question 46 of 79
46. Question
46. During the water rinse step of the water washable penetrant process, what is the
desired angle of the spray to the surface?CorrectIncorrect - Question 47 of 79
47. Question
47. Which type of emulsifier is designed to be used as a ‘scrubber’?
CorrectIncorrect - Question 48 of 79
48. Question
48. Post cleaning is especially important when
CorrectIncorrect - Question 49 of 79
49. Question
49. When using a hydrophilic emulsifier, the amount of penetrant removed is most
affected by:CorrectIncorrect - Question 50 of 79
50. Question
50. If a mercury vapour arc black light is inadvertently turned off, how soon may it be
restarted?CorrectIncorrect - Question 51 of 79
51. Question
51. Which of the following is normally prohibited as a method of removing excess
penetrant when using the solvent removable penetrant process?CorrectIncorrect - Question 52 of 79
52. Question
52. When performing a fluorescent penetrant examination, excess penetrant is normally
removedCorrectIncorrect - Question 53 of 79
53. Question
53. During a visible, solvent removable penetrant test, complete penetrant removal is
indicated by:CorrectIncorrect - Question 54 of 79
54. Question
54. Which of the following is a function of a developer
CorrectIncorrect - Question 55 of 79
55. Question
55. Which of the following is a function of a developer?
CorrectIncorrect - Question 56 of 79
56. Question
56. Which of the following developers is applied before the drying operation?
CorrectIncorrect - Question 57 of 79
57. Question
57. The most sensitive type of developer for the detection of fine discontinuities is:
CorrectIncorrect - Question 58 of 79
58. Question
58. Which of the following is the most sensitive developer in descending order?
CorrectIncorrect - Question 59 of 79
59. Question
59. Low sulphur and chlorine penetrant materials would be used for testing:
CorrectIncorrect - Question 60 of 79
60. Question
60. Which type of developer may be either in suspension or a solution?
CorrectIncorrect - Question 61 of 79
61. Question
61. The temperature of water rinse used in the water washable penetrant process should
be:CorrectIncorrect - Question 62 of 79
62. Question
62. The danger of over washing during a water washable penetrant test is that:
CorrectIncorrect - Question 63 of 79
63. Question
63. Which penetrant process is best suited to high production rates of many small parts?
CorrectIncorrect - Question 64 of 79
64. Question
64. Which penetrant process is best suited to detect shallow discontinuities?
CorrectIncorrect - Question 65 of 79
65. Question
65. Which penetrant process is best suited to the detection of discontinuities in a test piece
having threads and keyways?CorrectIncorrect - Question 66 of 79
66. Question
66. Which penetrant process is the most sensitive to detect fine discontinuities?
CorrectIncorrect - Question 67 of 79
67. Question
67. Which penetrant process is best suited for portable application in the field?
CorrectIncorrect - Question 68 of 79
68. Question
68. Which penetrant process should be used if repeated examinations are anticipated?
CorrectIncorrect - Question 69 of 79
69. Question
69. What is a disadvantage of using the fluorescent penetrant process?
CorrectIncorrect - Question 70 of 79
70. Question
70. Which of the following developers is applied by brush, spraying or dipping?
CorrectIncorrect - Question 71 of 79
71. Question
71. Which of the following developers is applied by spray only?
CorrectIncorrect - Question 72 of 79
72. Question
72. Which of the following developers is applied by immersion or flow on only?
CorrectIncorrect - Question 73 of 79
73. Question
73. What is the minimum time considered necessary for dark adaptation of the eyes prior
to evaluating the results of a fluorescent penetrant test?CorrectIncorrect - Question 74 of 79
74. Question
74. What is the likely result of looking directly into a black light?
CorrectIncorrect - Question 75 of 79
75. Question
75. Which type of penetrant process would be best suited to the detection of wide, shallow
discontinuities?CorrectIncorrect - Question 76 of 79
76. Question
76. Which type of penetrant process affords most control of test sensitivity level?
CorrectIncorrect - Question 77 of 79
77. Question
77. Which type of penetrant process is least susceptible to over washing?
CorrectIncorrect - Question 78 of 79
78. Question
78. What is a disadvantage of the solvent removable penetrant process?
CorrectIncorrect - Question 79 of 79
79. Question
79. Which of the following is the proper first step in removal of excess penetrant when
using the solvent removable penetrant process?CorrectIncorrect