The most common method of demagnetising small test pieces is:

Related MCQs

• When using a straight beam technique to examine a thick test piece what change(s) would you expect to see in back wall echo size as you approach the side of the test piece? (Transducer remains completely on test piece)
• An indication which is formed when two pieces of magnetised steel come in contact with each other is called:
• Which of the following is the most common method of packaging film?
• Which of the following is the most desirable method of pre-cleaning a test piece prior to penetrant testing?
• Which of the following characteristics would be most important in a test piece which is to be tested using the residual method?
• The ultrasonic test method in which finger damping is most effective in locating a discontinuity is:
• 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 post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?
• A 7.6 cm (3 inches) thick test specimen is radiographed with a source having size of 1.3 cm (1/2 inch), the film is placed in contact with the test specimen. The source to film distance is 40.6 cm (16 inches).The geometric unsharpness obtained is:
• An ultrasonic test using a straight beam contact search unit is being conducted through the thickness of a flat part such as a plate. This test should detect: