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.
Last updated
Practise Electrical Machines
1,061 free Electrical Machines MCQs from Electrical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Electrical Engineering questions like this
Electrical Engineering is on 2 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
The typical value of SCR for modern alternator is____________?
If the efficiency of a machine is to be high, what should be low __________?
Which of the following does not change in a transformer ?
In a transformer the energy is conveyed from primary to secondary_________?
A transformer core is laminated to__________?