ANT Q A

Question 1

1. How is the size of a Liquid Penetrant indication usually related to the discontinuity it represents:

[A] - Larger than
[B] - Smaller than
[C] - Equal to
[D] - Not related to

Answer 1

[A] - Larger than

Question 2

2. Which of the following chemical elements are normally held to a minimum in Liquid Penetrant materials?

[A] - Hydrogen
[B] - Chlorine
[C] - Carbon
[D] - Oil

Answer 2

[B] - Chlorine

Question 3

3. Which of the following chemical elements are normally held to a minimum in Liquid Penetrant materials?

[A] - Sulfur
[B] - Oxygen
[C] - Carbon
[D] - Nitrogen

Answer 3

[A] - Sulfur

Question 4

4. Visible, solvent removable penetrants are most advantageous for:

[A] - Inspecting parts with rough surfaces
[B] - Inspecting batches of small parts
[C] - Inspecting parts at remote locations
[D] - Inspecting parts with porous surfaces

Answer 4

[C] - Inspecting parts at remote locations

Question 5

5. What minimum warm-up time is required for acceptable performance of a mercury vapour arc black light?

[A] - None
[B] - 2 minutes
[C] - 5 minutes
[D] - 10 minutes

Answer 5

[D] - 10 minutes

Question 6

6. The colour of fluorescent penetrant under the presence of a uv light is:

[A] - Black
[B] - Red
[C] - Blue
[D] - Yellow/Green

Answer 6

[D] - Yellow/Green

Question 7

7. An oil based emulsifier is called:

[A] - Hydrophilic
[B] - Hydrophobic
[C] - Lipophillic
[D] - Fluoroscopic

Answer 7

[C] - Lipophillic

Question 8

8. A water based emulsifier is called:

[A] - Hydrophilic
[B] - Hydrophobic
[C] - Lipophillic
[D] - Fluoroscopic

Answer 8

[A] - Hydrophilic

Question 9

9. What is the preferred pre-cleaning process for removal of oil and grease :

[A] - Steam cleaning with a added acid
[B] - Vapour degreasing
[C] - Steam cleaning
[D] - Ultrasonic cleaning

Answer 9

[B] - Vapour degreasing

Question 10

10. What is the danger associated with using a wire brush during precleaning?

[A] - Bristles from the wire brush may cause relevant indications
[B] - Contaminants from the wire brush may cause delayed hydrogen cracking of high carbon steels
[C] - The wire brush may not adequately remove organic soils
[D] - The wire brush may close or smear metal over internal defects

Answer 10

[D] - The wire brush may close or smear metal over internal defects

Question 11

11. What is the preferred method of removing paint prior to performing a Penetrant Test?

[A] - Sand blast
[B] - Chemical removers
[C] - Power wire brush
[D] - Shot blast

Answer 11

[B] - Chemical removers

Question 12

12. Acceptable methods of penetrant application are:

[A] - Spraying
[B] - Dipping
[C] - Brushing
[D] - All of the above

Answer 12

[D] - All of the above

Question 13

13. Typical ranges of emulsifier dwell times are:

[A] - 5 to 10 minutes
[B] - 30 seconds to 2 minutes
[C] - 1 to 3 minutes
[D] - 5 to 10 minutes

Answer 13

[B] - 30 seconds to 2 minutes

Question 14

14. What is the likely result of incomplete removal of all excess penetrant from the test piece surface?

[A] - Formation of false indications
[B] - Formation of relevant indications
[C] - Exaggeration of the size of relevant indications
[D] - None of the above

Answer 14

[A] - Formation of false indications

Question 15

15. What maximum water rinse pressure is considered safe for removal of excess penetrant in the water washable penetrant process?

[A] - As low a pressure as possible, 40 PSI maximum
[B] - 100 to 200 PSI
[C] - 500 PSI maximum
[D] - 300 to 500 PSI

Answer 15

[A] - As low a pressure as possible, 40 PSI maximum

Question 16

16. During the water rinse step of the water washable penetrant process, what is the desired angle of the spray to the surface?

[A] - Normal
[B] - 30 degrees
[C] - 45 degrees
[D] - 75 degrees

Answer 16

[C] - 45 degrees

Question 17

17. Which of the following is normally prohibited as a method of removing excess penetrant when using the solvent removable penetrant process?

[A] - A water spray
[B] - A hydrophilic scrubber
[C] - A solvent spray
[D] - Clean, lint free towels moistened with solvent

Answer 17

[C] - A solvent spray

Question 18

18. Which of the following is a function of a developer?

[A] - Providing a contrasting background for visible dye indications
[B] - Accentuates presence of discontinuities by causing a penetrant indication to spread out over a larger area
[C] - Provides capillary paths to aid the bleed out process
[D] - All of the above

Answer 18

[D] - All of the above

Question 19

19. Which of the following developers is applied before the drying operation?

[A] - Dry
[B] - Non-aqueous wet
[C] - Water based wet
[D] - None of the above

Answer 19

[C] - Water based wet

Question 20

20. The temperature of water rinse used in the water washable penetrant process should be:

[A] - 60 to 110 degrees celsius
[B] - 40 to 100 degrees celsius
[C] - 16 to 43 degrees celsius
[D] - 70 to 140 degrees celsius

Answer 20

[C] - 16 to 43 degrees celsius

Question 21

21. Water based wet developer is applied:

[A] - Immediately before removal of excess penetrant
[B] - Immediately after removal of excess penetrant
[C] - After a drying period following removal of excess penetrant
[D] - For maximum sensitivity results

Answer 21

[B] - Immediately after removal of excess penetrant

Question 22

22. Dry developer is applied:

[A] - Immediately before removal of excess penetrant
[B] - Immediately after removal of excess penetrant
[C] - After a drying of part
[D] - For maximum sensitivity results

Answer 22

[C] - After a drying of part

Question 23

23. Which penetrant process is best suited to detect shallow discontinuities?

[A] - Solvent removable
[B] - Water washable
[C] - Post emulsifiable
[D] - Fluorescent

Answer 23

[C] - Post emulsifiable

Question 24

26. What is the minimum time considered necessary for dark adaptation of the eyes prior to evaluating the results of a fluorescent penetrant test?

[A] - 1 minute
[B] - 2 seconds
[C] - 5 minutes
[D] - 10 minutes

Answer 24

[C] - 5 minutes

Question 24

25. What is a disadvantage of using fluorescent penetrant processes?

[A] - Lower visibility of indications
[B] - Must be performed in a darkened area with aid of a uv lamp
[C] - Easily washed with water
[D] - High visibility of indications

Answer 24

[B] - Must be performed in a darkened area with aid of a uv lamp

Question 24

24. Which penetrant process is best suited to the detection of discontinuities in a test piece having threads and keyways?

[A] - Solvent removable
[B] - Water washable
[C] - Post emulsifiable
[D] - Fluorescent

Answer 24

[B] - Water washable

Question 25

27. What is the likely result of looking directly into a black light?

[A] - Burning of the retina of the eye
[B] - Temporary inflammation of the cornea
[C] - Long term tendency toward formation of cataracts
[D] - Fluorescence of the fluid in the eye

Answer 25

[D] - Fluorescence of the fluid in the eye

Question 26

28. Which type of penetrant process would be best suited to the detection of wide, shallow discontinuities?

[A] - Solvent removable
[B] - Water washable
[C] - Post emulsifiable
[D] - Fluorescent

Answer 26

[C] - Post emulsifiable

Question 27

29. Which type of penetrant process affords most control of test sensitivity level?

[A] - Solvent removable
[B] - Water washable
[C] - Post emulsifiable
[D] - Fluorescent

Answer 27

[C] - Post emulsifiable

Question 28

30. Which of the following is the proper first step in removal of excess penetrant when using the solvent removable penetrant process?

[A] - Immerse the test piece in solvent
[B] - Spray the test piece with water
[C] - Wipe the test piece surface with clean, lint free towels slightly moistened
[D] - All of the above is correct

Answer 28

[C] - Wipe the test piece surface with clean, lint free towels slightly moistened