Which component is the rotating member of a squirrel cage motor that provides the torque to do the mechanical work?

• A. Stator
• B. Rotor
• C. End Bells
• D. Bearings

Answer: (B)

In a squirrel cage motor, the rotating member that delivers the mechanical work is the rotor. The stator stays fixed and carries the windings that create a rotating magnetic field. This rotating field induces currents in the conductors of the rotor (the squirrel cage bars connected at the ends). The magnetic interaction between these rotor currents and the stator field produces electromagnetic torque, making the rotor turn and transfer mechanical power to the shaft. End bells and bearings simply support and house the components; they don't generate torque or rotate in the same way.