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Alternating Current and Voltage - Technical MCQs

Q1:

A half-cycle average voltage of 12 V is equal to what rms voltage?

A 13.33 V

B 8.48 V

C 18.84 V

D 7.64 V

ANS:A - 13.33 V

Vav = 0.636Vpk.
Vpk = Vav/0.636 = 12/0.636.
=.18.867925,
Vrms = Vpk/√2.
= .13.34.