M

Mr. Dubey • 52.30K Points
Coach 

Q. When is it possible to detect slightly sub-surface defects using penetrant testing?

(A) Only if you are using fluorescent penetrant
(B) When using post-emulsifiable penetrant
(C) It is not possible to detect slightly sub-surface defects using penetrant testing
(D) When using dual sensitivity penetrants
Correct : Option (C)

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