Question

The efficiency of a full wave rectifier is?

• A. Half of half wave rectifier
• B. $3$ times of half wave rectifier
• C. Double of half wave rectifier
• D. Same as half wave rectifier

Answer 1

The correct option is C Double of half wave rectifier

Efficiency of half-wave and full wave rectifier is given by
${\eta }_h=40.6\%$ and ${\eta }_f=81.2\%$
So, $\frac{{\eta }_h}{{\eta }_f}=\frac{40.6}{81.2}=\frac{1}{2}$
$\therefore n_f=2{\eta }_h$
Hence, the efficiency of a full wave rectifier is double of half wave-rectifier.