An AC motor is a machine that uses electricity as its power source to generate movement. They have two parts: a rotor (the spinning part) and a stator (the stationary part). The electricity is used to spin the rotor, which causes it to turn the shaft and power whatever it is attached to. AC motors use alternating current (AC) electricity, meaning the direction the electricity flows in changes regularly. AC motors are used in many everyday machines, from washing machines and hairdryers to electric cars.