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Modern day voltmeters are made of __________(a) made of transformers(b) made of vaccum tubes(c) made of transistors and diodes(d) made of insulated iron coilsI had been asked this question during an online interview.The above asked question is from Advantages of Electronic Instruments topic in portion Electronic Instruments of Electrical Measurements

Answer»

The correct option is (c) made of TRANSISTORS and DIODES

The best explanation: Nowadays in VOLTMETERS, transistors and semiconductor diodes are used. A TRANSISTOR voltmeter makes use of transistor in a voltmeter.



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