But we can create a rotating magnetic field by a two phase construction. Hence the 3 phase synchronous motor is not a self starting motor. Single Phase Induction Motors Ac Motors Electronics Textbook Em 3360 3a Ac Induction Motor Winding Trainer Why Is The Single Phase Motor Not Self Starting As discussed above single phase induction motors are not self starting because a single phase supply cannot produce a rotating magnetic field. 3 phase induction motor is self starting or not . This is possible when the rotor also rotates at synchronous speed. A 3 phase supply is given to the armature of synchronous motor produces a rotating magnetic field. Like three phase induction motor in three phase synchronous motor also rotating magnetic field is produced but the synchronous motor is not self starting. For an induction motor to be self starting the ...
