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  4. An AC source is rated 222 V , 60 Hz. The average voltage is calculated in a time interval of 16.67 ms. It

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Q. An $AC$ source is rated $222\, V , 60\, Hz$. The average voltage is calculated in a time interval of $16.67 \,ms$. It

Alternating Current

Solution:

$T=\frac{2 \pi}{W}=\frac{2 \pi}{2 \pi(60)}=16.67 \,ms$
$\Rightarrow $ for time interval $16.67 \,ms$ (which is time period) average volatge will always be zero.