Electric mains in the residential areas in India is marked as 220V,50Hz . The mean value of the voltage over half a cycle is ..... V.

Question

Electric mains in the residential areas in India is marked as 220V,50Hz . The mean value of the voltage over half a cycle is ..... V. (A) 220 (B) 110 (C) 311 (D) 198

Tardigrade Admin · Accepted Answer

Marked value is rms value. So Vr m s=220V So, Va v =0.637V0=0.637× √2Vrms =0.637× √2× 220=198V

Q. Electric mains in the residential areas in India is marked as $220 V, 50 Hz$ . The mean value of the voltage over half a cycle is ..... $V .$

$220$

$110$

$311$

$198$

Marked value is rms value. So $V_{r m s} = 220 V$
So, $V_{a v} = 0.637 V_{0} = 0.637 \times 2 V_{r m s}$
$= 0.637 \times 2 \times 220 = 198 V$

Q. Electric mains in the residential areas in India is marked as 220V,50Hz . The mean value of the voltage over half a cycle is ..... V.

220

110

311

198