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In the below shown semi-converter circuit T1 & T2 are fired at an angle α, then from ωt = π to α+π

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in Power Electronics by (27.1k points)
In the below shown semi-converter circuit T1 & T2 are fired at an angle α, then from ωt = π to α+π

(a) T1 is conducting

(b) T2 is conducting

(c) D1 is conducting

(d) FD conducting

I had been asked this question in an interview for internship.

My query is from Single Phase Semi-Converters-1 topic in division Converters of Power Electronics

1 Answer

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by (45.1k points)
Right option is (d) FD conducting

The explanation: None of the SCRs are gated, FD is forward biased and starts to conduct charging the L.

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