1.

Maximum efficiency of full - wave rectifier is(a) 100%(b) 81%(c) 53%(d) 42%

Answer»

Answer is : (b) 81%

Efficiency, η \(=\frac{81.2}{1+r_1/r_2}\%\)

So, ηmax = 81.2 ≅ 81%

where, r1 = forward bias diode resistance

and r2 = load resistance.

For maximum efficiency, r2 >> r1



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