A. Remain unchanged
B. Increased
C. Decreased
D. None of the above
Answer: A. Remain unchanged
Explanation:
Many alternators are connected to an infinite busbar and they are synchronized at the same frequency, so removing one of them doesn’t change the frequency.
It can be said that the power capabilities of the infinite bus bar are very much large as compared to an individual alternator connected to it thus when any alternator is removed no significant impact is made on the bus bar voltage or frequency and hence they don’t change.