What is the stationary winding of an electric motor that generates a rotating magnetic field called?

• A. Rotor
• B. Stator
• C. Coil
• D. Magnet

Answer: (B)

The stationary winding of an electric motor that generates a rotating magnetic field is termed the stator. The stator is crucial in the operation of electric motors, as it produces a magnetic field that interacts with the rotor, which is the part of the motor that actually turns.

In a typical motor design, the stator is composed of coils of wire that are energized with alternating current (AC), creating the magnetic field necessary for rotation. The interaction between the stator's magnetic field and the rotor's magnetic field results in motion, making the stator an essential component for the motor's functionality.

It's important to note that the rotor, which is the part that rotates, relies on the magnetic field generated by the stator for its operation. The coil refers generally to a single winding, or multiple windings, on either the stator or rotor, but does not specifically define the stationary part of the motor. Similarly, while a magnet can produce a magnetic field, it does not imply the structure or design of a stationary winding in an electric motor. Thus, the role and structure of the stator distinctly define it as the stationary winding responsible for creating the rotating magnetic field necessary for the motor's operation.