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In the below given circuit, if Vo = -Vs then

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+1 vote
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in Power Electronics by (27.1k points)
In the below given circuit, if Vo = -Vs then

(a) both the chopper switches are on

(b) only SW2 and D1 is active

(c) both the chopper switches are off and both the diodes D1 and D2 are active

(d) both the chopper switches are on and both the diodes D1 and D2 are reversed biased

This question was posed to me in semester exam.

Question is taken from Type D Chopper in division Choppers of Power Electronics

1 Answer

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by (45.1k points)
The correct answer is (c) both the chopper switches are off and both the diodes D1 and D2 are active

Easy explanation: When diodes are operating, power flows from load to source and the inductor (L) in the load reverses its polarity.

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