Measurement and Instrumentation
Potentiometer method of DC voltage measurement is more accurate than direct measurement using a voltmeter because

 It loads the circuit to maximum extent.
 It uses centre zero galvanometer instead of voltmeter.
  It does not load the circuit at all.
 It loads the circuit moderately.

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Measurement and Instrumentation
Why is a MISC meter not recommended for DC measurement?

The meter does not respond to DC signals
The meter is calibrated for AC and it’s error for DC would be high
The error is high due to eddy current effect
The error is high due to hysteresis effect

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