For adequate test results, the black light used in fluorescent penetra – McqOptions

MCQOPTIONS

1.	For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
A.	100 foot candles per square centimetre
B.	1000 microwatts per square centimetre
C.	800 foot candles
D.	35 microwatts per square centimetre
Answer» C. 800 foot candles

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