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Loading effect in electronic voltmeters is __________(a) nil(b) high(c) low(d) mediumThe question was asked in examination.I would like to ask this question from Advantages of Electronic Instruments in portion Electronic Instruments of Electrical Measurements

Answer»

The CORRECT option is (a) nil

Easiest explanation: In an electronic voltmeter as the POWER is supplied by an EXTERNAL circuit, there is no loading effect. In a PMMC instrument, a minimum CURRENT of 50 µA is obtained from the signal that is to be measured and this leads to loading effect.



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