The dielectric strength of transformer oil is expected to be______________?
Correct answer: B. 33 kV
- A. lkV
- B. 33 kV
- C. 100 kV
- D. 330 kV
Explanation
Good transformer oil has a dielectric strength of approximately 30 to 35 kV for the standard test gap, so 33 kV is the suitable value. Lower strength indicates moisture or contamination in the oil.
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
Sumpner's test is conducted on transformers to determine_____________?
The permissible flux density in case of cold rolled grain oriented steel is around__________?
The efficiency of a transformer will be maximum when_____________?
No-load on a transformer is carried out to determine______________?
The path of a magnetic flux in a transformer should have______________?
The no-load current drawn by transformer is usually what per cent of the full-load current ?