Top 80+ Solved Liquid Penetrant Testing Level 2 MCQ Questions Answer
Q. Which type of casting is made in a metal mould?
a. Investment casting
b. Sand casting
c. Die casting
d. Lost wax process
Q. The act of determining the cause of an indication is called
a. Interpretation
b. Inspection
c. Evaluation
d. Determination
Q. The act of determining the effect of a discontinuity of the usefulness of a part is called:
a. Interpretation
b. Inspection
c. Evaluation
d. Determination
Q. Contaminants which are commonly limited in penetrant materials are:
a. Hydrogen and chlorine
b. Carbon and sulphur
c. Hydrogen and carbon
d. Chlorine and sulphur
Q. The most likely result of a too short dwell time of an emulsifier is:
a. A tendency to remove the penetrant from fine discontinuities
b. Incomplete removal of excess surface penetrant
c. An overactive emulsifier
d. All of the above
Q. Diffusion of a lipophilic emulsifier penetrant into the test piece surface is stopped by:
a. The conclusion of the emulsifier dwell time
b. The penetrant
c. Application of developer
d. The water rinse step
Q. When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece which has been immersed in the penetrant because:
a. Too much penetrant on the part surface may lead to more rapid penetration and over-sensitivity
b. A thinner layer of penetrant is likely to have higher capillary action and, thus, be more sensitive to fine discontinuities
c. A thinner layer of penetrant will result in less penetrant contamination in the emulsifier tank
d. None of the above
Q. When a drain-dwell technique is used during emulsification, what two mechanisms areresponsible for combining the emulsifier and penetrant?
a. Diffusion and turbulent mixing
b. Osmosis and agitation
c. Turbulent mixing and osmosis
d. Agitation and turbulent mixing
Q. When performing a post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?
a. Return the test piece to the emulsifier and repeat the step
b. Increase water temperature and pressure
c. Remove the excess penetrant with solvent remover and process the remainder of the test normally
d. Clean the test piece and re-process through the complete penetrant test process
Q. The adequacy of excess penetrant removal, using water washable penetrant process, is judged and controlled by:
a. Water rinse time
b. Fluorescent brightness measurement
c. Visual observation
d. Cleanliness of cloths used for removal
Q. Another name for a self-emulsifying penetrant process is:
a. Solvent removable
b. Water washable
c. Post emulsifiable
d. Solvent emulsifiable
Q. Which of the following is a function of an emulsifier?
a. To draw penetrant out of a discontinuity and form a visible indication
b. To increase the size of an indication through capillary action
c. To provide contrasting background for viewing penetrant indications
d. None of the above
Q. When viewed under black light, developer appears:
a. Yellow-green
b. Blue-black
c. White
d. Pinkish white
Q. Penetrant developers are used in which of the following forms?
a. Water washable
b. Water suspendable
c. Solvent suspendable
d. All of the above
Q. Which of the following developers requires the test piece to be dried prior to itsapplication?
a. Water washable
b. Water suspendable
c. Non-aqueous suspendable
d. All of the above