engineering recuitment UPCL AE (E&M) 2021 Mock Test Electrical Machines Alternator and Synchronous Motors
What will be the effect on a salient pole synchronous motor if its field current is switched off (provided the motor runs at no load)?
1
It will stop
2
It continues to run at synchronous speed
3
It continues to run at a speed slightly more than the synchronous speed
4
It continues to run at a speed slightly less than the synchronous speed