PT-G-L2

1. A common application of an aluminium block containing quench cracks is to:

Which of the following is not (!) an advantage of a water washable fluorescent
penetrant process?

3. When using a water washable penetrant testing process, why should the water rinse
temperature remain constant?

4. What is the proper technique for removal of excess penetrant from a part when using a
water washable penetrant process?

5. Which type of developer would you use to obtain the highest sensitivity test results?

6. What type of penetrant process would be best suited to an application at near freezing
temperatures?

7. Which type of developer does not (!) provide a contrasting background against which
to view penetrant indications?

8. Which type of developer should not be used with a visible dye penetrant process?

9. Why might steel parts have a greater tendency towards rusting after penetrant testing?

10. The most significant advantage of the visible solvent removable penetrant process is?

11. Correct developer coating thickness is indicated by:

12. Which penetrant test processes commonly use the same penetrants?

13. Mercury vapour black lights may be extinguished if the supply voltage drops below
about:

14. The output of a mercury vapour black light depends on:

15. When a mercury vapour black light is first turned on, what minimum warm-up time is
normally required?

16. When a mercury vapour black light is inadvertently cut off, approximately how long
should it be allowed to cool before attempting to restart?

17. A soft aluminium test piece is to be penetrant tested. The piece has previously been
sand blasted to remove tightly adhering soils. What additional surface preparation
should be performed?

18. Dried, non-aqueous developers are best removed after penetrant testing by:

19. The most important penetrant test processing time to control is:

20. A penetrant which contains an emulsifier is called:

21. A penetrant which requires a separate emulsification step prior to removal from the
surface of the test piece is called?

22. The chief advantage of using a water washable penetrant process is:

23. While performing a fluorescent water washable penetrant test, which of the following
steps should be performed under black light?

24. What are the two most important properties in determining the penetrating ability of a
penetrant?

25. The human eye is most sensitive to which of the following types of light?

26. What amount of time is normally considered necessary for dark adaption of the eyes
prior to performing a fluorescent penetrant test?

Which of the following is not normally recommended?

What is the most common source of penetrant bath contamination?

Which of the following is normally considered acceptable practice?

A penetrant testing method in which an emulsifier, separate from the penetrant, is used
is called:

A penetrant testing method in which the degree of washability can be controlled by the
operator is called:

Open, shallow discontinuities are best detected by which penetrant testing method?

An advantage of the post emulsifiable penetrant testing process is that:

A disadvantage of the post emulsifiable penetrant process is that:

Acceptable methods to apply emulsifier are:

An advantage of emulsifier application by dipping is:

Emulsification time is less critical for the detection of:

Over washing during excess penetrant removal is less likely with which penetrant
testing process?

The fluorescent dyes used in the liquid penetrant testing process are most active when
energised with black light of what wavelengths? (Å stands for angstrom units)

Application of penetrant to a test piece may be by:

41. The penetrant process best suited to use on parts with rough surfaces is:

42. The penetrant process best suited for the detection of very fine discontinuities is:

43. The penetrant process best suited for use on parts with keyways and threads is:

44. Indications which are caused by design or construction of the test piece are called?

45. Indications which are caused by something other than a discontinuity are called:

Which of the following discontinuities would you not expect to find in a casting?

Which type of casting is made in a metal mould?

The act of determining the cause of an indication is called

The act of determining the effect of a discontinuity of the usefulness of a part is called:

Contaminants which are commonly limited in penetrant materials are: