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Question

In half wave rectifier, a p-n diode with internal resistance 20 Ω is used. If the load resistance of 2 KΩ is used in the circuit, then the efficiency of this half wave rectifier is (in percentage)
  1. 80.4%
  2. 40.2%
  3. 20%
  4. 50%

A
80.4%
B
50%
C
40.2%
D
20%
Solution
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The efficiency η of half wave rectifier is given by, η=0.406RLrf+RL

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