Answer Posted / sidda raghavendra

* For an induction machine:

at the time of starting if we can set the speed of the
machine is just less than its synchronous speed it works as
induction motor as we must give electrical power as input

at the time of starting if we can set the speed of the
machine is just higher than its synchronous speed it works
as induction Genearator as we must give Mechanical
(steam,hydral or diesel and so on) power as input

*For synchonous machine:

Its all depend on only the input of the machine

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