

MCQOPTIONS
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1. |
In an A scan presentation, the amplitude of vertical indications on the screen represents the: |
A. | Amount of ultrasonic sound energy returning to the search unit |
B. | Distance travelled by the search unit |
C. | Thickness of material being tested |
D. | Elapsed time since the ultrasonic pulse was generated |
Answer» B. Distance travelled by the search unit | |