Question

sensitivity of voltmeter pmmc type instruments​

Answer 1

Answer:

The current sensitivity of voltmeter of moving coil type like PMMC voltmeter is defined as the deflection per unit current in the coil. If Ɵ be the angular deflecting of needle of voltmeter for current I through the moving coil, then sensitivity of voltmeter is given as

S = Ɵ / I

You might think that, why we are expressing the sensitivity of voltmeter in terms of current through the moving coil.

Answer 2

Answer:

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