The best available source of black light for inspection is:

Related MCQs

• For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
• A common physiological effect of black light inspection on the inspector is:
• A common physiological effect of black light inspection on the inspector is:
• Which of the following would be likely to cause variations in the output of an inspection black light?
• A radiographic exposure with 3700 GBq (100 Ci) source of Ir-192 using source to film distance of 60 cm results in a radiation intensity of 0.12 Gy/h (11.8 R/h) and a radiographic density of 2.5. The intensity of radiation needed to obtain the same density when the source to film distance is changed to120 cm is:
• An inspection for surface and subsurface discontinuities in ferromagnetic welds would best be accomplished by which of the following techniques?
• What minimum warm-up time is required for acceptable performance of a mercury Vapour arc black light?
• If a mercury vapour arc black light is inadvertently turned off, how soon may it be restarted?
• What is the likely result of looking directly into a black light?
• The output of a mercury vapour black light depends on: