The coupling angle or load angle of synchronous motor is defined as the angle between the__________?
Correct answer: B. rotor and the stator poles of opposite polarity
- A. rotor and stator teeth
- B. rotor and the stator poles of opposite polarity
- C. rotor and the stator poles of the same polarity
- D. none of the above
Explanation
The load angle is the angular displacement between the rotor magnetic axis and the stator resultant field. In motor operation, rotor poles lag the oppositely polarised stator poles, giving the stated reference.
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