Top 80+ Solved Liquid Penetrant Testing Level 2 MCQ Questions Answer
Q. 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?
a. Etching
b. Solvent cleaning
c. Ultrasonic cleaning
d. Grinding
Q. Dried, non-aqueous developers are best removed after penetrant testing by:
a. Solvent cleaning
b. Wiping with a water dampened cloth
c. Wiping with a dry towel
d. Any of the above
Q. The most important penetrant test processing time to control is:
a. Penetrant dwell time
b. Emulsifier dwell time
c. Water rinse time
d. Development time
Q. A penetrant which contains an emulsifier is called:
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Solvent suspended
Q. A penetrant which requires a separate emulsification step prior to removal from the surface of the test piece is called?
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Solvent suspended
Q. The chief advantage of using a water washable penetrant process is:
a. Sensitivity
b. Safety
c. Water tolerance
d. Economics
Q. While performing a fluorescent water washable penetrant test, which of the followingsteps should be performed under black light?
a. Penetrant application
b. Excess penetrant removal
c. Emulsification
d. Developer application
Q. What are the two most important properties in determining the penetrating ability of a penetrant?
a. Viscosity and surface tension
b. Viscosity and contact angle
c. Surface tension and wetting ability
d. None of the above
Q. The human eye is most sensitive to which of the following types of light?
a. Yellow-green
b. Red
c. Blue-violet
d. Orange
Q. What amount of time is normally considered necessary for dark adaption of the eyes prior to performing a fluorescent penetrant test?
a. None required
b. 1 to 2 minutes
c. 3 to 5 minutes
d. 5 to 10 minutes
Q. Which of the following is not normally recommended?
a. Performing a fluorescent penetrant test following a visible penetrant test?
b. Performing a visible penetrant test following a fluorescent test
c. Removing excess penetrant with a water spray
d. Removing excess penetrant with towels moistened with solvent
Q. What is the most common source of penetrant bath contamination?
a. Emulsifier
b. Water
c. Developer
d. Solvent
Q. Which of the following is normally considered acceptable practice?
a. Sand blasting a soft aluminium part during pre-cleaning
b. Performing a fluorescent penetrant test following a visible penetrant test
c. performing a re-test on a part tested with a water washable penetrant process
d. Removing excess penetrant with a water spray
Q. A penetrant testing method in which an emulsifier, separate from the penetrant, is usedis called:
a. Solvent removable
b. Water washable
c. Post emulsifying
d. Self emulsifying
Q. A penetrant testing method in which the degree of washability can be controlled by theoperator is called:
a. Self emulsifying
b. Post emulsifiable
c. Water washable
d. Solvent removable