[Solved] Entry surface resolution is a characteristic of an ultrasonic testing system which defines its ability to:

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Q.	Entry surface resolution is a characteristic of an ultrasonic testing system which defines its ability to:
A.	Detect discontinuities oriented in a direction parallel to the ultrasonic beam
B.	Detect discontinuities located in the center of a forging containing a fine metallurgical structure
C.	Detect minute surface scratches
D.	Detect discontinuities located just beneath the entry surface in the part being tested
Answer» D. Detect discontinuities located just beneath the entry surface in the part being tested

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