When variations are noticed in the front surface reflection, the test – McqOptions

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1.	When variations are noticed in the front surface reflection, the test piece should be inspected for possible near surface discontinuities by:
A.	Using a lower frequency transducer
B.	Using a higher pulse energy
C.	Inspecting from the opposite side
D.	Calibrating on a smaller diameter flat bottom hole
Answer» D. Calibrating on a smaller diameter flat bottom hole

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