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MCQ Practice Question

For a single-phase half-wave controlled rectifier with a purely resistive load, increasing firing angle from 0 toward 180 degrees generally causes the average output voltage to?

ADecrease
BIncrease
CRemain constant
DBecome independent of the supply

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Correct Answer: A. Decrease

Explanation: Delaying SCR turn-on shortens the conduction interval, reducing the average output voltage for a resistive load.

Reference: Standard power electronics: controlled rectifiers

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