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14. Semicondutor electronics — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics14. Semicondutor electronics1 Mark
MCQ
The maximum efficiency of full wave rectifier is.........$\%$
  • A
    $100$
  • B
    $25.20$
  • C
    $40.2$
  • ✓
    $81.2$
✓

Answer

Correct option: D.
$81.2$
d
(d)For full wave rectifier $\eta = \frac{{81.2}}{{1 + \frac{{{r_f}}}{{{R_L}}}}}$
==> ${n_{\max }} = 81.2\% $ $(rf << RL)$

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