If a D.C. series motor is operated on A.C. supply, it will____________?
Correct answer: D. all of the above
- A. spark excessively
- B. have poor efficiency
- C. have poor power factor
- D. all of the above
Explanation
A DC series motor on AC suffers from high reactance, poor power factor, reduced efficiency, and severe commutator sparking. Hence all three listed effects occur.
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