Electric motors are the basic requirement of every household and organization today. However, in organization, they are required in large number and in extra power like three phase electric motor; while in household, single phase electric motor is required for various purposes. Innovative and widely used tools – electric motors are found in different applications including blowers, pumps, machine equipments, industrial fans, power tools, household appliances, Gear boxes , disk drivers, electrical appliances and many others. In other words, those appliances that need electric power to run cannot be imagined without electric motors. As far as different types of electric motors are concerned, they are divided into different categories like DC motors, permanent magnet motors, brushed DC motors, brushless DC motors, switched reluctance DC motors, coreliess or ironless DC motors, printed armature/pancake DC motors, universal motors, AC motors, AC motors with sliding rotor, induction motor...