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Q#1 Transformers GATE EE 2012 MCQ +2 marks -0.66 marks

A single phase 10kVA, 50Hz transformer with 1kV primary winding draws 0.5A and 55W, at rated voltage and frequency, on no load. A second transformer has a core with all its linear dimensions  times the corresponding dimensions of the first transformer. The core material and lamination thickness are the same in both transformers. The primary windings of both the transformers have the same number of turns. If a rated voltage of 2kV at 50Hz is applied to the primary of the second transformer, then the no load current and power, respectively, are

0.7A, 77.8W         

0.7A, 155.6W

1A, 110W         

1A, 220W

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