1. Which one of the following conditions will affect the rate and the extent a liquid penetrant will enter cracks, fissures and other small openings?
a. the hardness of the specimen being
b. the surface condition of the specimen
c. the color of the penetrant A.35
d. the conductivity of the specimen being tested
internal inclusion b. nonferrous penetrant d. none of the above
c. chemical etch penetrant A.35
d. nonaqueous penetrant
A.43
6. Which of the following is generally the more acceptable method for cleaning
3. A generally accepted method for parts prior to penetrant testing?
removing excess nonwater-washable
penetrant is: a. sand blasting b. wire brushing
a. repeatedly dipping the test specimen c. grinding
in a cleaner d. vapor degreasing
b. soaking the test specimen in hot A.167
detergent water
c. blowing the excess penetrant off the
su rface of the part with compressed 7. All of the following methods are
air commonly used to clean parts prior to d. wiping and cautiously cleaning the penetrant testing except:
test specimen with a cleaner-
dampened cloth a. vapor degreasing
A.45 b. liquid solvent
c. power wire brushing d. alkaline cleaner