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Successive approximation type DVM is based on the principle of ______

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Successive approximation type DVM is based on the principle of ______

(a) acceleration of an object

(b) weight of an object

(c) velocity of an object

(d) momentum of an object

I had been asked this question by my college professor while I was bunking the class.

My question is from Successive Approximation Type DVM topic in portion Electronic Instruments of Electrical Measurements

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Right option is (b) weight of an object

Explanation: A successive approximation type DVM works on the principle of measuring the weight of an object. It consists of an object on one of the sides of the balance and an appropriate weight on the other side of the balance. The weight of the object is determined by successively adding and removing weights from the balance.

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