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ESE 2021 Technical Quiz || Instrument Transformers & Digital Voltmeter

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Question 1

Which of the following is true among the following when we consider PT (potential transformer)?

Question 2

How the voltage 0.5314 will be displayed on a  digital voltmeter measuring maximum of 1 V.

Question 3

Consider a current transformer (CT), its primary winding carries 200 A, and secondary measured 0.495 A. Percentage ratio error (%) is ________. [Take 400/1 A, 10 VA, 0.8 p.f. CT for analysis].

Question 4

In digital voltmeter, during start of conversion, zero indication is displayed and is called auto zeroing. This is achieved by

Question 5

Which of the following method is not applicable for reduction of phase angle error in current transformer?
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Jun 1ESE & GATE EE