How does a motor spin 1140 rpm?

A motor spins at 1140 RPM (revolutions per minute) by converting electrical energy into mechanical energy through electromagnetic interactions. In an AC motor, alternating current creates a rotating magnetic field that interacts with the rotor, causing it to turn. The motor's design, including factors like the number of poles and the frequency of the supply current, determines its speed. In this case, a specific configuration allows the motor to achieve a speed close to 1140 RPM under load conditions.