Alternating Current Machines are electrical devices that convert electrical energy into mechanical energy or vice versa using alternating current (AC). These machines include AC motors and generators, which operate based on the principles of electromagnetism. They are widely used in various applications, from household appliances to industrial equipment. AC machines typically consist of a stator and a rotor. The stator generates a rotating magnetic field, while the rotor is placed within this field, causing it to turn. This interaction allows for efficient energy conversion, making AC machines essential in modern electrical systems and power generation.