Measurement and Instrumentation
The coil of a moving iron instrument has a resistance of 500 ohm and inductance of 1 H. It reads 250 V when a 250 V DC is applied. It series resistance is 2000 ohms its reading when fed by 250 V, 50 Hz AC will be

 250 V.
 260 V.
 248 V.
 252 V.

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Measurement and Instrumentation
Which of following is not correct?

 Voltmeter should have very high resistance.
 A shunt should have a very low resistance.
 An ammeter should have a very low resitance.
  An electronic voltmeter draw appreciable current from the source.

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