Physics · Electrical Machines
Compared to a synchronous motor, the key advantage of a 3-phase induction motor is that it is self-starting. What is the fundamental reason for this?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The rotating magnetic field induces currents in the rotor, creating torque at speeds below synchronous.✓
- 2The induction motor does not require a DC excitation source.
- 3The induction motor operates at a lagging power factor, providing VARs to the system.
- 4The induction motor has a higher power density.
Correct answer
The rotating magnetic field induces currents in the rotor, creating torque at speeds below synchronous.
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