Question:-
A 50 Hz synchronous generator is initially connected to a long lossless transmission line which is open circuited at the receiving end. With the field voltage held constant, the generator is disconnected from the transmission line. Which of the following may be said about the steady state terminal voltage and field current of the generator?

Option (A)
The magnitude of terminal voltage decreases, and the field current does not change
Option (B)
The magnitude of terminal voltage increases, and the field current does not change
Option(C)
The magnitude of terminal voltage increases, and the field current increases
Option(D)
The magnitude of terminal voltage does not change, and the field current decreases
Correct Option:
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