An oscilloscope display in which the screen base line is adjusted to represent the one way distance in a test piece is called a:

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)
• The portion of a test piece which is represented by the CRT screen area from zero to the rightmost edge of the initial pulse is called:
• An ultrasonic display which shows a cross section of the test piece and any flaws which are found are called:
• A soft aluminium test piece is to be penetrant tested. The piece has previously been sand blasted to remove tightly adhering soils. What additional surface preparation should be performed?
• An instrument display in which the horizontal base line represents elapsed time and the vertical deflection represents signal amplitudes is called:
• An ultrasonic instrument control which is used to expand or contract the horizontal base line of an A scan display is called:
• Strong signals which travel across the horizontal time base of an A scan presentation while the transducer is motionless on the test piece are probably:
• When performing a post emulsifiable penetrant test, the test piece does not rinse acceptable clean during normal processing. What should be done?
• An ultrasonic insrument control which is used to adjust the sharpness of the CRT screen display is called:
• A technique in which two transducers are used, one on each side of the test piece, is called: