Which of the following is the most effective method for the detection of extremely deep-lying defects:

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Mr. Dubey

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Q. Which of the following is the most effective method for the detection of extremely deep-lying defects:

(A) Dry residual method using DC surge
(B) Wet continuous method using half wave rectified current
(C) Wet residual method
(D) Dry continuous method using half wave rectified current with prods

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✅ Correct Answer: (D) Dry continuous method using half wave rectified current with prods

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