A transformer has negative voltage regulation when its load power factor is
Correct answer: A. Lagging
- A. Lagging
- B. Leading
- C. Unity
- D. any of above
Explanation
a) Lagging: In a transformer, the voltage regulation is said to be negative when the secondary voltage decreases with an increase in the load current. This situation occurs when the load power factor is lagging. Lagging power factor means that the load current lags behind the voltage, which leads to a decrease in the secondary voltage when the load current increases.
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