Exam. No. PT - II - 22
A B C D A B C D
Exam. No. PT - II - 22
A B C D A B C D
Liquid Penetrant Testing (Level II) (Exam. No. PT - II - 22)
1. Which of the following is not a recommended method of removing grease from
surface of a part to be penetrant tested ?
One) Vapor degreasing . b) Alkaline cleaner.
c) Cleaning with solvent-type material. d) Hot water rinse.
2. When conducting a penetrant test, spherical indications on the surface of a part
could be indicative of :
One) Fatigue cracks. b) Porosity.
c) Lack of penetration. d) Hot tears.
3. Which of the following is not a form in which penetrant developer is commonly
One) Dry developer. b) Non-aqueous developer.
c) Wet developer. d) High viscosity developer.
4. Which of the following is a possible cause for false penetrant indications ?
One) Excessive washing. b) Inadequate application of developers.
c) Lint or dirt. d) Penetrant or part too cold during penetration time.
5. Developer assists in the detection of penetrants retained in discontinuities by aiding
One) Post-cleaning process. b) Emulsification process.
c) Bleed-out process. d) Drying process.
6. Which of the following methods for applying non-aqueous developer is normally
considered most effective ?
One) Spraying b) Swabbing.
c) Brushing. d) Dipping.
7. Of the methods listed below, the most effective means of pre-cleaning a test item
prior to a penetrant test is :
One) Vapor degreasing. b) Detergent cleaning.
c) Steam cleaning. d) Solvent wiping.
8. Fluorescent materials, used in fluorescent penetrants respond most actively to
radiant energy, of a wavelength of approximately :
One) 7000 Angstroms. b) 250 KV.
c) 3650 Angstroms. d) 100 foot candles.
9. Emulsifier time :
One) Is important but not normally critical.
Two) Is the time needed to rinse the emulsifier and excess penetrant from the
Three) Should be as long as economically practical.
Four) Is extremely important and will greatly affect test results.
10. Developing time depend on the :
One) Type of penetrant used.
Two) Type of developer used and type of discontinuity to be detected.
Three) Temperature of the material being tested.
Four) All of the above.
11. Which of the following is not good practice when penetrant testing ?
One) Applying emulsifier by dipping the part in emulsifier.
Two) Applying developer by spraying the part with developer.
Three) Removal of water-washable penetrant with a water spray.
Four) Applying emulsifier with a brush.
12. When penetrant testing titanium alloys, the materials used in the penetrant system
should not contain any constituent quantities of :
One) Carbon and oil. b) Haloginated solvents.
c) Emulsifier and oil. d) Fluorescent agent.
13. Which of the following discontinuities might be found in a welded fabrication ?
a) Shrinkage. b) Seams.
c) Lack of fusion. d) Laps.
14. The tendency of a liquid penetrant to enter a discontinuity is primarily related to :
One) The capillary forces. b) The viscosity of the
c) The chemical inertness of the penetrant. d) The specific gravity of the penetrant.
15. Why is it advisable to have a black light installed at the wash station ?
One) So that inspection can be done without drying parts.
Two) To speed the bleeding of penetrant out of defects.
Three) To check the effectiveness of the wash cycle.
Four) To determine if parts have been covered with penetrant.
16. Developing powder should always be :
One) Colorless. b) Evenly applied.
c) Highly fluorescent. d) Applied wet.
17. When improper processing causes inspection difficulties, what should the inspector
One) Swab the parts with a solvent. b) Use a correct bleed-
c) Erase non-relevant fluorescence. d) Reprocess the part.
18. Which of the following would be a typical “non-relevant indication”?
One) Indications due to part geometry or part design configurations.
Two) Non-magnetic indications.
Three) Multiple indications.
Four) Non-linear indications.
19. Which of the statements below states the danger of using sand blasting for cleaning
surfaces to be penetrant tested ?
One) The discontinuities may be closed.
Two) Oil contaminants might be sealed in the discontinuities.
Three) The sand used in the sand blasting operation may be forced into the
Four) The sand blasting operation may introduce discontinuities in the part.
20. Which of the following could be a source of false indications on a test specimen ?
One) Penetrant on the test table.
Two) Penetrant on the hands of the inspector.
Three) Contamination of dry or wet developer with penetrant.
Four) All of the above.
21. Which of the following discontinuities would be impossible to detect using a liquid
penetrant test ?
One) Forging lap. b) Non-metallic internal
c) Crater crack. d) Grinding cracks.
22. When using a fluorescent, post-emulsifier penetrant, the length of time the emulsifier
is allowed to remain on the part is critical for detecting shallow discontinuities. The
optimum length of time should be :
One) 5 seconds. b) 2 to 3 minutes.
c) 10 seconds. d) Determined by experimentation.
23. Aluminum alloy test specimens that have been tested by the liquid penetrant method
should be thoroughly cleaned after testing because :
One) Acid in the penetrant may cause severe corrosion.
Two) The alkaline in wet developers and most emulsifiers could cause
surface pitting, particularly in most atmospheres.
Three) The oily residue from the test will severely inhibit the application of paint
on aluminum alloys.
Four) A chemical reaction between the penetrant and aluminum could cause
24. Liquid penetrant testing can be used to detect :
One) Discontinuities 1/16" below the surface. b) Internal discontinuities.
c) Discontinuities open to the surface. d) All discontinuities.
25. Liquid penetrant indications of a press fit are considered :
One) Stress riser. b) Non-relevant indication.
c) Defect indication. d) Discontinuity indication.
26. When using solvent-removable penetrants, the excess penetrant may be removed by
One) Dipping the part in solvent.
Two) Spraying the part with water and solvent.
Three) Rubbing the part with wet rag.
Four) Wiping the part with a rag or cloth that is dampened with solvent.
27. When performing a penetrant test using a post-emulsification penetrant, which of the
following is the most critical with respect to proper timing ?
One) Dowell time. b) Emulsification time.
c) Developing time. d) Drying time.
28. Cleaning of the part prior to penetrant inspection :
One) Not required.
Two) Important because if the part is not clean, the developer can not be
Three) Essential because surface contaminants may prevent penetrant from
gaining access to discontinuities.
Four) Required to eliminate possibility of showing non-relevant indications.
29. Best fluorescent discontinuity indications can be seen by the inspector :
One) Immediately after he enters the black light booth.
Two) Immediately after switching on the black light.
Three) After adequate time for accommodating his eyes.
Four) Only in the peak cycles of the black light.
30. Which of the following materials can not be tested by usual liquid penetrant tests ?
One) Unglazed porous ceramics. b) Stainless steels.
c) Carbon steels. d) Titanium.