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If the SCR T1 is gated at 0°, then for 120° mode of operation, from ωt = 240° to 300° __________ devices would conduct.

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in Power Electronics by (27.1k points)
If the SCR T1 is gated at 0°, then for 120° mode of operation, from ωt = 240° to 300° __________ devices would conduct.

(a) T3, T4

(b) T4, T5

(c) T1, T6

(d) T5, T6

The question was posed to me in unit test.

Question is taken from 3-Phase Bridge Inverters-3 topic in division Inverters of Power Electronics

1 Answer

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by (45.1k points)
Correct answer is (b) T4, T5

For explanation I would say: Devices

T1

T1

0

T4

T4

0

T1

T1

0

T6

0

T3

T3

0

T6

T6

0

T3

0

T2

T2

0

T5

T5

0

T2

T2

ωt = 240° to 300°, would form the 5th step.

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