The maximum power developed in a synchronous motor occurs at a coupling angle of____________?
Correct answer: C. 90°
- A. 30°
- B. 60°
- C. 90°
- D. 180°
Explanation
Power transfer varies as P = Pmax sin δ, where δ is the coupling or torque angle. Its maximum value occurs when sin δ = 1, giving δ = 90°.
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