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Measurements and Instrumentation - Engineering

Q1:

The volt ratio box is basically a

A potential divider

B current transformer

C a high resistance voltmeter

D either (a) or (c)

ANS:A - potential divider

DC potentiometer can measure voltages upto about 1.5 V. Volt ratio box is used to reduce the unknown voltage so that it can be measured by dc potentiometer.