Liquid Penetrant Testing Exam ACTUAL
QUESTIONS AND CORRECT ANSWERS
Bleed out - CORRECT ANSWER The action of the entrapped penetrant in spreading
out from surface discontinuities to from an indication.
Capillary action - CORRECT ANSWER the tendency of liquids to penetrant or migrate
into small opening such as cracks pits or fissures.
Clean - CORRECT ANSWER free of interfering solid or liquid contamination.
Contrast - CORRECT ANSWER the difference is visibility illumination or coloration
between an indication and the surrounding surface.
defect - CORRECT ANSWER
A suitable filter must be used at all times over a black light bulb because - CORRECT
ANSWER
Which of the statements below best states the danger of sandblasting (without subsequent
chemical etching) for cleaning surfaces to be penetrant tested? - CORRECT
ANSWER The discontinuities may be peened over and closed.
Which of the following is the most commonly used method for removing non-water-
washable visible dye penetrant from the surface of a test specimen? - CORRECT
ANSWER HAND WHIPPING
Which one of the following conditions will affect the rate and the extent a liquid penetrant
will enter cracks, fissures, and other small openings? - CORRECT ANSWER The
surface condition of the specimen being tested
Cutting oils may be effectively removed from parts before penetrant testing by: - CORRECT
ANSWER B. vapor degreasing.
, A good commercial penetrant should have a: - CORRECT ANSWER B. high flash
point.
Which of the following conditions will decrease the life of a black light bulb? - CORRECT
ANSWER A. Line voltage fluctuations
In penetrant testing, the time period from developer application to inspections is often
referred to as: - CORRECT ANSWER B. development time.
Liquid penetrant testing is capable of detecting: - CORRECT ANSWER B.
Discontinuities open to the surface.
Which of the following is NOT a basic inspection principle that applies to all penetrant
methods? - CORRECT ANSWER B. Indications glow when illuminated with a black
light.
Visible penetrant may be applied by: - CORRECT ANSWER D. all of the above.
Which of the following is an acceptable method for applying wet developers? - CORRECT
ANSWER D. Spraying or dipping.
Bleed-out of penetrant from a cold shut is an example of a: - CORRECT ANSWER C.
true indication.
Which of the following statements do not apply to developers used during penetrant testing? -
CORRECT ANSWER A. Developers are normally highly fluorescent.
Penetrant is applied to a part by dipping. The part is then placed on a rack while the penetrant
seeps into discontinuities. If the penetration time is too long, it will be difficult to rinse the
penetrant from the part. If this happens, the normal rinsing properties can be restored by: -
CORRECT ANSWER C. redipping the part.
QUESTIONS AND CORRECT ANSWERS
Bleed out - CORRECT ANSWER The action of the entrapped penetrant in spreading
out from surface discontinuities to from an indication.
Capillary action - CORRECT ANSWER the tendency of liquids to penetrant or migrate
into small opening such as cracks pits or fissures.
Clean - CORRECT ANSWER free of interfering solid or liquid contamination.
Contrast - CORRECT ANSWER the difference is visibility illumination or coloration
between an indication and the surrounding surface.
defect - CORRECT ANSWER
A suitable filter must be used at all times over a black light bulb because - CORRECT
ANSWER
Which of the statements below best states the danger of sandblasting (without subsequent
chemical etching) for cleaning surfaces to be penetrant tested? - CORRECT
ANSWER The discontinuities may be peened over and closed.
Which of the following is the most commonly used method for removing non-water-
washable visible dye penetrant from the surface of a test specimen? - CORRECT
ANSWER HAND WHIPPING
Which one of the following conditions will affect the rate and the extent a liquid penetrant
will enter cracks, fissures, and other small openings? - CORRECT ANSWER The
surface condition of the specimen being tested
Cutting oils may be effectively removed from parts before penetrant testing by: - CORRECT
ANSWER B. vapor degreasing.
, A good commercial penetrant should have a: - CORRECT ANSWER B. high flash
point.
Which of the following conditions will decrease the life of a black light bulb? - CORRECT
ANSWER A. Line voltage fluctuations
In penetrant testing, the time period from developer application to inspections is often
referred to as: - CORRECT ANSWER B. development time.
Liquid penetrant testing is capable of detecting: - CORRECT ANSWER B.
Discontinuities open to the surface.
Which of the following is NOT a basic inspection principle that applies to all penetrant
methods? - CORRECT ANSWER B. Indications glow when illuminated with a black
light.
Visible penetrant may be applied by: - CORRECT ANSWER D. all of the above.
Which of the following is an acceptable method for applying wet developers? - CORRECT
ANSWER D. Spraying or dipping.
Bleed-out of penetrant from a cold shut is an example of a: - CORRECT ANSWER C.
true indication.
Which of the following statements do not apply to developers used during penetrant testing? -
CORRECT ANSWER A. Developers are normally highly fluorescent.
Penetrant is applied to a part by dipping. The part is then placed on a rack while the penetrant
seeps into discontinuities. If the penetration time is too long, it will be difficult to rinse the
penetrant from the part. If this happens, the normal rinsing properties can be restored by: -
CORRECT ANSWER C. redipping the part.
