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The efficiency of two identical transformers under load conditions can be determined by

A. short-circuit test

B. back-to-back test

C. open circuit test

D. any of the above

Answer: Option B


This Question Belongs to Electrical Engineering >> Transformers

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A good voltage regulation of a transformer means

A. output voltage fluctuation from no load to full load is least

B. output voltage fluctuation with power factor is least

C. difference between primary and secondary voltage is least

D. difference between primary and secondary voltage is maximum