If a full wave rectifier circuit is operating from $50 Hz$ mains, the fundamental frequency in the ripple will be
A$50 Hz$
B$70.7 Hz$
C$100 Hz$
D$25 Hz$
[UPSEAT 2000; CBSE PMT 2003; AIEEE 2005]
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C$100 Hz$
$100 Hz$
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