A transformer can have regulation closer to zero___________?
Correct answer: C. on leading power factor
- A. on full-load
- B. on overload
- C. on leading power factor
- D. on zero power factor
Explanation
At a leading power factor, the voltage drop caused by transformer leakage reactance can be offset by the resistive drop, bringing regulation close to zero. Lagging or zero power factor generally produces a larger voltage drop.
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