Electrical Engineering · Synchronous Motors
During the auxiliary motor starting method of a synchronous motor, at what point is the DC excitation applied to the rotor field winding?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1When the synchronous motor reaches near-synchronous speed.✓
- 2Immediately after starting the auxiliary motor.
- 3The DC excitation is never required for synchronous motors.
- 4At standstill, before starting the auxiliary motor.
Correct answer
When the synchronous motor reaches near-synchronous speed.
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