If T is the time period for a chopper circuit and Î± is its duty cycle, then the chopping frequency is

Electronics and Communication Engineering (ECE) : Power Electronics - Quiz(MCQ)

Î±/Toff

Ton/Î±

Toff/Î±

Î±/Ton

Correct Answer : Option (D) : Î±/Ton

Explanation : α = Ton/T
T = Ton/ α
f = 1/T = α/Ton.

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both inverter and rectifier

None of the above

Correct Answer : both inverter and rectifier

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HVDC transmission has ___________ as compared to HVAC transmission.

higher corona loss

smaller transformer size

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Correct Answer : smaller conductor size

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