Metallurgical Engineering > GATE 2025 > Non-Destructive Testing

Contributed by: Dr. Sarah Chen

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Which of the following techniques can be used to detect an internal defect in a metal casting?

A

Ultrasonic inspection

B

Liquid (or dye) penetrant inspection

C

Gamma-ray radiography

D

X-ray radiography

Check Answer

Explanation

Correct : a

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