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1.

If a voltmeter measures a sine wave as 500 mV, what would be its average value?

Answer» Some AC Voltage Conversion: Peak to rms: multiply peak by 0.707. Peak to average: multiply peak by 0.637. Rms to peak: multiply rms by 1.414. Rms to average: multiply rms by 0.9. Average to rms: multiply avg by 1.111. Average to peak: multiply avg by 1.567. Mostly voltmeter shows rms value. So, Vav = 0.9*Vrms = 0.9*500. = 450mV ~ [D] 451 mV.
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