The colour of fluorescent penetrant under the presence of a UV light is:

Related MCQs

• Fluorescent penetrant indications are more visible than colour contrast penetrant indications because:
• For adequate test results, the black light used in fluorescent penetrant examination should provide what minimum black light intensity at the test surface?
• When performing a fluorescent penetrant examination, excess penetrant is normally removed:
• The advantages of using a visible solvent removable penetrant versus a post emulsified fluorescent penetrant is:
• While performing a fluorescent water washable penetrant test, which of the following steps should be performed under black light?
• When using a post emulsifiable penetrant process, it is important to drain as much excess penetrant as possible from the surface of a test piece which has been immersed in the penetrant because:
• The fluorescent dyes used in the liquid penetrant testing process are most active when energised with black light of what wavelengths? (Å stands for angstrom units)
• What is a disadvantage of using the fluorescent penetrant process?
• What is the minimum time considered necessary for dark adaptation of the eyes prior to evaluating the results of a fluorescent penetrant test?
• Which of the following is not (!) an advantage of a water washable fluorescent penetrant process?