Efficiency of a power transformer is of the order of________________?
Correct answer: B. 98 per cent
- A. 100 per cent
- B. 98 per cent
- C. 50 per cent
- D. 25 per cent
Explanation
Power transformers are highly efficient because they have no mechanical losses and are designed to minimize core and copper losses. Typical efficiencies are around 98% or higher, not exactly 100%.
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