An average response rectifier type electronic ac voltmeter

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An average response rectifier type electronic ac voltmeter has dc voltage of 10 V applied to it. The meter reading will be ___________V

1. 11.1
2. 11
3. 12
4. 14

Correct Option: A

A rectifier type instrument is calibrated to read rms values for sinusoidal waveforms Thus it shows 1.11 time and average value. Therefore, reading should be 10 × 1.11 = 11.1V.