Discussion
The load angle of a synchronous motor is measured between
Answer: C
Correct answer: the rotor field axis and the stator field axis
The load angle is the angular displacement between the two fields, expressed in electrical degrees, and it is what determines the power transferred through \( P = (EV/X)\sin\delta \). It is not a mechanical measurement, and in a multi-pole machine the physical displacement is smaller by the number of pole pairs.
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