- Rotor (electric)
The rotor is the non-stationary part of a rotary
electric motoror alternator, which rotates because the wires and magnetic field of the motor are arranged so that a torque is developed about the rotor's axis. In some designs, the rotor can act to serve as the motor's armature, across which the input voltageis supplied. The stationary part of an electric motor is the stator.A common problem is called cogging torque.
Armature (electrical engineering)
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