The rotor copper losses, in a synchronous motor, are met by____________?
Correct answer: A. d.c. source
- A. d.c. source
- B. armature input
- C. motor input
- D. supply lines
Explanation
Rotor copper loss is the I²R loss in the field winding, and this winding receives its excitation from a separate DC source or exciter. Armature input supplies stator copper and core-related power, not the rotor field loss directly.
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