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For a step-down chopper, find the rms value of output voltage. Let α be the duty cycle and Vs be the input voltage.

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For a step-down chopper, find the rms value of output voltage. Let α be the duty cycle and Vs be the input voltage.

(a) α x Vs

(b) Vs/α

(c) √α x Vs

(d) Vs/2

I had been asked this question during an online exam.

My question is from Choppers-3 topic in section Choppers of Power Electronics

1 Answer

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by (45.1k points)
The correct option is (c) √α x Vs

The explanation: [(T^on/T).Vs^2]^1/2 = √α x Vs.

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