Natural oil cooling is used for transformers up to a rating of____________?
Correct answer: A. 3000 kVA
- A. 3000 kVA
- B. 1000 kVA
- C. 500 kVA
- D. 250 kVA
Explanation
Natural oil circulation with natural air cooling is commonly used for transformers up to about 3000 kVA in standard textbook classifications. Larger ratings generally require forced oil or forced-air cooling.
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