Circuit turn-off time of an SCR is defined as the time (a)

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Circuit turn-off time of an SCR is defined as the time
(a)
(b)
(c)
(d)

1. taken by the SCR to turn off
2. required for the SCR current to become zero
3. for which the SCR is reverse biased by the commutation circuit
4. for which the SCR is reverse biased to reduce its current below the holding current

Correct Option: C

NA