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Induction motor Self Starting - Question

Why single phase induction motor is not self starting and how three phase induction motor is said to be self starting?

ambi, proud to be a member of Vidyarthiplus.com (V+) - Online Students Community since Jan 2013.


I Hope you are confused..., three phase induction motor is a self starting and single phase induction motor is not a self starting motor since it has no starting torque.. At starting of the motor (i.e When slip = 1) the resultant torque is 0, so various starting methods are employed to start the single phase motor such as Capacitor start , Capacitor run ..etc..

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