D.C. generators are connected to the busbars or disconnected from them only under the floating condition________________?
Correct answer: D. all above
- A. to avoid sudden loading of the primemover
- B. to avoid mechanicaljerk to the shaft
- C. to avoid burning of switch contacts
- D. all above
Explanation
A generator is connected to or removed from busbars under floating, or no-load, conditions to prevent sudden prime-mover loading, shaft jerk, and excessive switching current that could damage contacts. Therefore all three listed effects are avoided.
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