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To reduce the ripples in a rectifier cir...

To reduce the ripples in a rectifier circuit with capacitor filter

A

`R_(L)` should be increased.

B

input frequency should be decreased.

C

input frequency should be increased.

D

capacitors with high capacitance should be used.

Text Solution

Verified by Experts

The correct Answer is:
A, C, D
Variations (or pulsations) in the output voltage of rectifier is determined by "ripple factor". Its value is kept as small as possible to reduce the variations of output voltage and to make it almost constant. Its symbol is `lambda`. Its formula is as follows:
`lambda=(1)/(4sqrt(3)fCR_(L))`
`rArr` To reduce `gamma`, values of f, C and `R_(L)` should be increased.
`rArr` Options (A, C, D) are correct.
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