In an electric motor, what role does the stator play?

The stator in an electric motor is crucial because it generates the rotating magnetic field that is necessary for the motor’s operation. This magnetic field is produced by alternating current (AC) supplied to the stator windings, causing the magnetic field to change in direction and strength.

This rotating magnetic field interacts with the rotor, which is the component that actually turns and produces mechanical output. The design of the stator, including the arrangement of its windings and the type of materials used, directly affects the efficiency and performance of the motor.

While offering mechanical support is important and is indeed one of the functions of the stator, its primary role is more about generating the magnetic field rather than just providing support. Housing the rotor is not a primary function either, as it typically allows for the rotor to rotate freely without being obstructed. Acting as a power supply is also inaccurate; rather, the stator is supplied with power that it uses to create the magnetic field necessary for motor function. Thus, the generation of the rotating magnetic field is the key role of the stator in an electric motor.