First slide

Rectifiers

Question

In a full wave rectifier circuit operating from 50 Hz moving frequency, the fundamental frequency in the ripple would be (in Hz)

Moderate

A

100
B

150
C

200
D

250

Solution

$I n f u l l w a v e r e c t i f i e r, w e g e t t h e o u t p u t f o r t h e p o s i t i v e a n d n e g a t i v e c y c l e o f i n p u t a . c .$
$H e n c e t h e f r e q u e n c y o f t h e r i p p l e o f t h e o u t p u t i s t w i c e t h a n t h a t o f i n p u t a . c .$
$F r e q u e n c y = 2 \times i n p u t f r e q u e n c y = 2 \times 50 = 100 H z$

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