Electrical Machines
Demagnetization effects which of the following?

 both B and C
 reduces the terminal voltage
 reduction in main field flux
 commutation

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Electrical Machines
An alternator is feeding an infinite busbar. Its prime mover is suddenly shutdown. The alternator will

 start working as induction motor.
 come to stand still.
 continue to work as synchronous motor with same direction of rotation.
 continue to work as alternator but the direction of rotation will reverse.

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