The maximum efficiency of full wave rectifier is

Q: The maximum efficiency of full wave rectifier is

(a) 100 %

(b) 25.20 %

(c) 40.2 %

(d) 81.2 %

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Ans: (d)

Sol: For full wave rectifier , $\large \eta = \frac{81.2}{1 + \frac{r_f}{R_L}}$

ηmax = 81.2% (rf ≪ RL )