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A quartz crystal is _________

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A quartz crystal is _________

(a) a chemical transducer

(b) a photoelectric transducer

(c) not a self-generating transducer

(d) a self-generating transducer

I got this question in an interview for job.

Query is from Piezoelectric Transducer in portion Transducers of Electrical Measurements

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Correct answer is (d) a self-generating transducer

The best explanation: The quartz crystal is a self-generating transducer. It does not need any electric voltage for operation. The quartz crystal becomes short in length due to an applied electric field in the opposite direction.

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