Top 80+ Solved Liquid Penetrant Testing Level 2 MCQ Questions Answer
Q. Open, shallow discontinuities are best detected by which penetrant testing method?
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. None of the above
Q. An advantage of the post emulsifiable penetrant testing process is that:
a. Test pieces can be re-processed several times with little loss of sensitivity
b. It is the most economical penetrant testing process
c. It is highly susceptible to over washing
d. It is not self emulsifying
Q. A disadvantage of the post emulsifiable penetrant process is that:
a. Test pieces can be re-processed several times with little loss of sensitivity
b. It is not very sensitive to open, shallow discontinuities
c. It is less sensitive to degradation in the presence of acids and chromates
d. Emulsifier application is an extra processing step
Q. Acceptable methods to apply emulsifier are:
a. Dipping
b. Flowing
c. Spraying
d. All of the above
Q. An advantage of emulsifier application by dipping is:
a. Excess penetrant is recovered in the emulsifier tank and reprocessed
b. All of the test object is coated at approximately the same time
c. Excess emulsifier drains back into the emulsifier tank for re-use
d. Hydrophilic scrubbing is then easier to perform
Q. Emulsification time is less critical for the detection of:
a. Fine, tight cracks
b. Wide, shallow discontinuities
c. Internal porosity
d. None of the above
Q. Over washing during excess penetrant removal is less likely with which penetranttesting process?
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Self emuslifying
Q. The fluorescent dyes used in the liquid penetrant testing process are most active whenenergised with black light of what wavelengths? (Å stands for angstrom units)
a. 2.0 × 10-7m (2000Å)
b. 2.5 × 10-7m (2500 Å)
c. 3.25 × 10-7m (3250Å)
d. 3.65 × 10-7m (3650 Å)
Q. Application of penetrant to a test piece may be by:
a. Dipping, brushing or spraying
b. Spraying only
c. Bushing or spraying only
d. Dipping or spraying only
Q. The penetrant process best suited to use on parts with rough surfaces is:
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Magnetic particle
Q. The penetrant process best suited for the detection of very fine discontinuities is:
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Magnetic particle
Q. The penetrant process best suited for use on parts with keyways and threads is:
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. None of the above
Q. Indications which are caused by design or construction of the test piece are called?
a. Relevant
b. Non-relevant
c. False
d. Real
Q. Indications which are caused by something other than a discontinuity are called:
a. Relevant
b. Non-relevant
c. False
d. Real
Q. Which of the following discontinuities would you not expect to find in a casting?
a. Shrinkage cracks
b. Incomplete penetration
c. Cold shuts
d. Porosity