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For the circuit below, the transformer ratio is 1:1 and Vs = Vm sinωt. When T1 is forward biased and is triggered at α than T2 is

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in Power Electronics by (27.1k points)
For the circuit below, the transformer ratio is 1:1 and Vs = Vm sinωt. When T1 is forward biased and is triggered at α than T2 is

(a) subjected to a forward voltage of Vm sinα

(b) subjected to a forward voltage of 2Vm sinα

(c) subjected to a reverse voltage of Vm sinα

(d) subjected to a reverse voltage of 2Vm sinα

I had been asked this question in unit test.

This intriguing question originated from Single Phase FW AC-DC-1 topic in division Converters of Power Electronics

1 Answer

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by (45.1k points)
Right option is (d) subjected to a reverse voltage of 2Vm sinα

Best explanation: When T1 is gated, the other SCR T2 is reversed biased due to the windings so connected.

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