2. Which of the following is not an effective method for removing grease from the surface of a
part to be penetrant tested?
A. Alkaline cleaner
B. vapor degreasing
C. hot water rinse
D. cleaning with solvent-type material
ANSWER : C
3. The best test for production monitoring of the penetrant process is the
A. ceramic block test
B. cracked Ni-Cr panel test
C. cracked AI block test
D. cracked AI-Cr panel test
ANSWER : C
4. Abrasive tumbling to remove light scale and burrs from cast parts is often used prior to liquid penetrants
testing which of the following material should NOT be subjected to abrasive tumbling prior to liquid
A. Ti
B. Cast iron
C. Inconel
D. Cast steel
ANSWER : A
5. Which penetrant technique is generally best suited for parts with rough surface conditions?
A. water washable
B. post emulsifier
C. visible dye solvent removable
D. all are about equal
ANSWER : A
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