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.
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