The motor converts the electrical energy into mechanical energy .The motor we used here is 100rpm.That means if vanes rotates 1000 times here the motor will rotate 100 times. A DC motor is a motor that uses direct electrical current (DC) as the source of its energy. An AC motor is a motor that uses alternating electrical current (AC) as the source of its energy. AC current is the type of electricity provided by household wall outlets. DC current is the type of electricity provided by batteries.