An SCR is considered to be a semi controlled device because_______?
Correct answer: C. it can be turned ON but not OFF with a gate pulse.
- A. it can be turned OFF but not ON with a gate pulse.
- B. it conducts only during one half cycle of an alternating current wave.
- C. it can be turned ON but not OFF with a gate pulse.
- D. it can be turned ON only during one half cycle of an AC.
Explanation
A gate pulse can trigger an SCR into conduction, but removing the gate signal does not turn it off. It turns off only when its current falls below the holding current or suitable reverse bias is applied.
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