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Question

DC power output of half-wave rectifier is equal to

(I0 is the peak current and RL is the load resistance)

A
2I20π2RL
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B
I202π2RL
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C
I20π2RL
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D
4I20π2RL
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Solution

The correct option is C I20π2RL
Given:
I0= Peak current
So, Peak voltage, V0=I0RL

And we know that,

Iavg=I0π & Vavg=V0π

Now, the average DC power of a half-wave rectifier is given by,

P=VDC×IDC=V0π×I0π=V0I0π2

P=I20π2RL

Hence, option (C) is correct.

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