Question

If the A.C. main supply is of 220 V then the average e.m.f. during positive half cycle will be:

• A. 198.2 V
• B. 98.2 V
• C. 9.82 V
• D. Zero

Answer 1

The correct option is A 198.2 V

Given $RMS$ value of Voltage $=220$ V
We know:
$E_{av}=\frac{2E_o}{\pi }=\frac{2\sqrt{2}{E}_{rms}}{\pi }$
Substituting respective values we get Average value of Voltage $=198.2$ V.