The no-load current drawn by transformer is usually what per cent of the full-load current ?
Correct answer: B. 2 to 5 per cent
- A. 0.2 to 0.5 per cent
- B. 2 to 5 per cent
- C. 12 to 15 per cent
- D. 20 to 30 per cent
Explanation
Transformer no-load current is normally only about 2 to 5 percent of full-load current, although it can vary with transformer size and design. It is small because the core needs only a modest magnetising current under no-load conditions.
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