Besides a constant speed a synchronous rotor possesses which of the following advantages ?
Correct answer: C. High power factor
- A. Lower cost
- B. Better efficiency
- C. High power factor
- D. All of the above
Explanation
A synchronous motor can operate at a leading power factor by overexciting its field, which improves the power factor of the supply system. Lower cost is not generally an advantage because synchronous motors require additional excitation equipment.
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