Buchholz's relay gives warning and protection against_________________?
Correct answer: A. electrical fault inside the transformer itself
- A. electrical fault inside the transformer itself
- B. electrical fault outside the transformer in outgoing feeder
- C. for both outside and inside faults
- D. none of the above
Explanation
A Buchholz relay is installed in the oil pipe between the transformer tank and conservator, so it detects gas formation and oil surges caused by internal faults. It does not normally protect against faults on an outgoing feeder.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
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.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
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.
More Electrical Machines questions
The magnetising current of a transformer is usually small because it has___________?
The changes in volume of transformer cooling oil due to variation of atmospheric temperature during day and night is taken care of by which part of transformer?
Which of the following does not change in an ordinary transformer ?
Two transformers are connected in parallel. These transformers do not have equal percentage impedance. This is likely to result in____________?
During short circuit test iron losses are negligible because of _____________?
Which of the following is the main advantage of an auto-transformer over a two winding transformer?