Top 150+ Solved Liquid Penetrant Testing Level 1 MCQ Questions Answer
Q. What is the preferred method of removing paint prior to performing a penetranttesting?
a. Sand blast
b. Chemical removers
c. Power wire brush
d. Shot blast
Q. What additional surface preparation or cleaning must be performed on a machined orground aluminium casting prior to penetrant testing?
a. Vapour degreasing
b. Etching
c. Detergent wash
d. Nothing
Q. Acceptable methods of penetrant application are:
a. Spraying
b. Dipping
c. Brushing
d. All of the above
Q. The time period during which penetrant remains on the surface of the test piece iscalled:
a. Dwell time
b. Soaking time
c. Fixing time
d. Development time
Q. Excess penetrant removal is a two step process with which of the following penetrantmethods?
a. Water washable
b. Post emulsifiable
c. Solvent removable
d. Liquid oxygen applications
Q. A developer aids penetrant bleed out because of:
a. Adequate removal of the excess penetrant
b. Providing a contrasting background for visible dye indications
c. Capillary action
d. Proper emulsifier action
Q. In the solvent removable penetrant process, excess penetrant is removed with:
a. A water spray
b. A hydrophilic scrubber
c. A solvent spray
d. Clean, lint free towels slightly moistened with solvent
Q. Water based wet developer is applied:
a. Immediately before removal of excess penetrant
b. Immediately after removal of excess penetrant
c. After a drying period following removal of excess penetrant
d. For maximum sensitivity results
Q. Non-aqueous wet developer is applied:
a. Immediately before removal of excess penetrant
b. Immediately after removal of excess penetrant
c. After the excess penetrant is removed and part surface is dried
d. For maximum sensitivity results
Q. Dry developer is applied:
a. Immediately before removal of excess penetrant
b. Immediately after removal of excess penetrant
c. After drying of the part
d. For maximum sensitivity results
Q. Typical ranges of emulsifier dwell times are:
a. 5 to 10 minutes
b. 30 seconds to 1 minute
c. 1 to 3 minutes
d. 5 to 10 minutes
Q. Actual emulsification times are determined by:
a. Experiment, during technique qualification
b. Manufacturer's recommendations
c. Code requirements
d. None of the above
Q. The colour of fluorescent penetrant under the presence of a UV light is:
a. Yellow-green
b. Red
c. Blue
d. Green
Q. What action is necessary if the penetrant is inadvertently allowed to dry on the testpiece?
a. Repeat the test, beginning with the pre-cleaning operation
b. Re-wet the penetrant, begin dwell time again and continue
c. Clean the penetrant off the surface and develop normally
d. Clean the penetrant off the surface, wait 5 minutes and develop normally
Q. What maximum water rinse pressure is considered safe for removal of excesspenetrant in the water washable penetrant process?
a. As low a pressure as possible, 50 PSI maximum
b. to 200 PSI
c. PSI maximum
d. to 500 PSI