Q. A disadvantage of using natural quartz crystals in a search unit is that:

(A) It will dissolve in water
(B) It is the least effective generator of ultrasonic energy of all commonly used materials
(C) It easily loses it operating characteristics as it ages
(D) None of the above is correct

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✅ Correct Answer: (B) It is the least effective generator of ultrasonic energy of all commonly used materials

Published by Mr. Dubey ⭐ 104.82K Points at 21-Sep-2023 07:20 pm in Non Destructive Testing and Evaluation

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