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In the below shown voltage commutated chopper circuit, the chopper operation can only start when

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in Power Electronics by (27.1k points)
In the below shown voltage commutated chopper circuit, the chopper operation can only start when

(a) t1 is gated

(b) the capacitor is charged

(c) the diode is forward biased

(d) the capacitor is dis-charged

The question was asked in an interview for job.

Question is from Thyristor Chopper Circuits in chapter Choppers of Power Electronics

1 Answer

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by (45.1k points)
The correct choice is (b) the capacitor is charged

The explanation is: The chopper can only start (effectively) when the C in the commutating circuit is charged first.

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