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In electronic voltmeter, the range of input voltages can be extended by using _______

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In electronic voltmeter, the range of input voltages can be extended by using _______

(a) Functional switch

(b) Input attenuator

(c) Rectifier

(d) Balanced bridge dc amplifier

I got this question in an online quiz.

I would like to ask this question from The Rectifier Voltmeter in section Application of Diodes of Electronic Devices & Circuits

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Correct answer is (b) Input attenuator

To explain I would say: The function of the attenuator is that it helps to select a particular range of voltage values. The rectifier is essential in a voltmeter for the conversion of AC voltage into DC voltage.

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