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Q.

In a half wave rectifier, a p-n junction diode with internal resistance 20Ω is used. If the load resistance of 2kΩ is used in the circuit, then find the efficiency of this half wave rectifier.

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a

30.2%

b

38%

c

40.2 %

d

44%

answer is C.

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Detailed Solution

Load resistance RL=2 KΩ=2×103 Ω Internal resistance rf=20 Ω Efficiency η=? Efficiency η=0.406×RLRL×rf×100 =0.406×20002020×100 =40.2%

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In a half wave rectifier, a p-n junction diode with internal resistance 20Ω is used. If the load resistance of 2kΩ is used in the circuit, then find the efficiency of this half wave rectifier.