Which of the following motors can be used for unity power factor ?
Correct answer: D. Schrage motor
- A. Capacitor run motor
- B. Shaded pole motor
- C. Hysteresis motor
- D. Schrage motor
Explanation
The Schrage motor permits control of its power factor through injected voltage, so it can be operated at approximately unity power factor. The other listed motors generally operate with lagging power factor.
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