The maximum efficiency of a distribution transformer is____________?
Correct answer: B. at 50% full load
- A. at no load
- B. at 50% full load
- C. at 80% full load
- D. at full load
Explanation
Distribution transformers remain energized continuously, so their design gives good efficiency at a moderate load rather than only at full load. The usual approximate design point for maximum efficiency is 50% of full load.
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