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Analog Electronics - Engineering

Q1:

It has been found that in a rectifier circuit with RC filter one RC section reduces ripple by 15%. Two RC sections are used in cascade the reduction in ripple would be

A 15%

B 30%

C 150%

D 225%

ANS:D - 225%

One filter reduces ripple to 0.15 of initial value. The second filter reduces ripple to 0.15 x 0.15 of initial value.