Repulsion Ac motor for Electrical Lab Training. Make Repulsion Ac motor is a single phase motor which has stator winding arranged for connection to source of power and Armature winding connected to commutator and brushes on commutator are short circuited. Brushes are so placed that the magnetic axis of Rotor winding is inclined to magnetic characteristic to change the Direction. Repulsion Ac motor is continuously rated, screen protected, self ventilated machine in E/B class Insulation and confirms.