When an alternator connected to the bus-bar is shut down the bus-bar voltage will___________?
Correct answer: C. remain unchanged
- A. fall
- B. rise
- C. remain unchanged
- D. none of the above
Explanation
When one alternator is disconnected from a common bus, the remaining generators maintain the bus voltage through their excitation systems, assuming adequate capacity. Hence the ideal bus-bar voltage remains essentially unchanged.
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