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Low voltage signals can be measured by ___________

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Low voltage signals can be measured by ___________

(a) amplifiers

(b) transformers

(c) transducers

(d) voltmeters

This question was posed to me in an international level competition.

This intriguing question originated from Basic Electronic Voltmeter in division Electronic Instruments of Electrical Measurements

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Right answer is (a) amplifiers

Easy explanation: Electronic voltmeters make use of amplifiers to measure low voltage signals. It consists of two or more stages of D.C. amplifiers.

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