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Q meter works on the principle of _______(a) barkhausen criterion(b) piezoelectric effect(c) parallel resonance(d) series resonanceThis question was posed to me in an international level competition.The question is from Qmeter in chapter Electronic Instruments of Electrical Measurements

Answer»

The correct ANSWER is (d) series resonance

Easy explanation: Q METER basically operates on the CHARACTERISTICS of a series resonant coil. In a series resonant circuit the voltage drop across the coil or a CAPACITOR is equal to the APPLIED voltage multiplied by its Q factor.



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