A synchronous motor develops maximum power when load angle is____________?
Correct answer: C. 90°
- A. 45°
- B. 60°
- C. 90°
- D. 120°Engineering & Technology
Explanation
For a cylindrical-rotor synchronous motor, power varies approximately as sin δ, where δ is the load angle. This reaches its maximum at δ = 90°.
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