10 Question PT quiz

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

Surface laminations.

Internal forging bursts.

Surface cracks.

Surface laps.

2. Which of the following is a possible cause for false penetrant indications?

Excessive washing.

Inadequate application of developers.

Penetrant or part too cold during penetration time.

Lint or dirt.

3. Which of the following is not good practice when penetrant testing?

Applying emulsifier by dipping the part in emulsifier.

Applying developer by spraying the part with developer.

Removal of water-washable penetrant with a water spray.

Applying emulsifier with a brush.

4. Which of the following is a discontinuity that might be found in a forging?

Shrinkage cracks.

Laps.

Cold shuts.

Insufficient penetration.

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

the specific gravity of th penetrant

cohesive forces of the penetrant

leakage fields

capillarity

6. The term non-relevant indication is used to describe certain types of penetrant testing indications. Which of the following would be a typical non-relevant indication?

Indications due to part geometry or part design configurations.

Nonmagnetic indications.

Multiple indications.

Non-linear indications.

7. Which of the following is not a form in which penetrant developer is commonly available?

Dry developer.

Non-aqueous developer.

Wet developer.

High viscosity developer.

8. Which of the following is a discontinuity that might be found in rolled plate stock?

Shrinkage cracks.

Inclusions.

Forginglaps.

Blow holes.

9. The sulphur found in penetrant materials are detrimental to:

aluminium

iron

nickel

magnesium

10. The flash point of a fluorescent penetrant is:

The minimum black light intensity which causes the penetrant to fluoresce

an indication shown by castings and forgings at the Junction of the two halves of the mould or die

the temperature at which the penetrant becomes flammable

the temperature at which sufficient flammable vapour is given off by the penetrant to form an explosive mixture

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