This course covers three-phase alternating current (AC) induction motors, which use magnetic induction to convert three-phase AC power into mechanical energy. They are used throughout industry to drive equipment such as conveyor belts, pumps, air compressors, and generators. Three-phase AC induction motors are economical, efficient, and reliable. But, although they are reliable, they may still break down. Electrical maintenance personnel are responsible for maintaining the three-phase induction motors in their plant and for fixing any AC motors that have broken down.