Electrical Engineering · Power Electronics
In the context of Silicon Controlled Rectifier (SCR) operation in an AC circuit, the firing angle (α) is best defined as:
- 1The angle from the start of the AC cycle to the point where the SCR turns off.
- 2The angle measured from the instant the SCR becomes forward-biased to the instant it is triggered into conduction.✓
- 3The angle during which the SCR remains in the conducting state in one half-cycle.
- 4The angle from the zero crossing of voltage to the instant the SCR becomes reverse-biased.
Correct answer
The angle measured from the instant the SCR becomes forward-biased to the instant it is triggered into conduction.
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