GATE MT concept:eddy-current PYQs & Answers

Questions 1–3 of 3. Imported answers require independent review unless marked reviewed.

Which of the following statements is/are correct for non-destructive testing?

Your answerSelect all correct options. You can choose more than one.

Liquid dye penetration technique can be utilized for detecting surface cracks.

In radiographic examination, internal cracks cannot be detected.

Eddy current-based techniques can be used for detecting sub-surface defects in pure alumina at room temperature.

Ultrasonic inspection is unsuitable for inspecting sub-surface defects in high damping capacity material (e.g., cast iron).

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Match the nondestructive technique (in Column I) with its underlying phenomenon (in Column II):

Column I (P) Dye penetrant test (Q) Radiography (R) Eddy current test (S) Ultrasonic inspection

Column II

X-ray absorption

Capillary action

Elastic waves reflection

Electromagnetic induction

Your answerChoose one option.

P–4, Q–3, R–2, S–1

P–2, Q–1, R–3, S–4

P–2, Q–1, R–4, S–3

P–3, Q–2, R–1, S–4

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The most suitable non-destructive testing method for detecting small internal flaws in a dense bulk material is ____________.

Your answerChoose one option.

Dye penetrant method

Ultrasonic inspection

Eddy current testing

Magnetic particle inspection

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GATE MT concept:eddy-current PYQs