How to turn on Silicon controlled rectifier?

Q.  Silicon controlled rectifier can be turned on
- Published on 08 Sep 15

a. By applying a gate pulse and turned off only when current becomes zero
b. And turned off by applying gate pulse
c. By applying a gate pulse and turned off by removing the gate pulse
d. By making current non zero and turned off by making current zero

ANSWER: By applying a gate pulse and turned off only when current becomes zero

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