Electrical Engineering · Synchronous Motors
What will be the excitation EMF (Ef) equation when a synchronous motor is operating at a leading power factor?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Ef = [(Vt cosφ + IaRa)2 + (Vt sinφ - IaXs)2]1/2
- 2Ef = [(Vt cosφ - IaRa)2 + (Vt sinφ + IaXs)2]1/2✓
- 3Ef = [(Vt cosφ + IaRa)2 + (Vt sinφ + IaXs)2]1/2
- 4Ef = [(Vt cosφ - IaRa)2 + (Vt sinφ - IaXs)2]1/2
Correct answer
Ef = [(Vt cosφ - IaRa)2 + (Vt sinφ + IaXs)2]1/2
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