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Q#1 Transformers GATE EE 1991 MCQ +2 marks -0.66 marks

The hysteresis and eddy current losses of a single phase transformer working on 200V, 50 Hz supply are  respectively. The percentage decrease in these, when operated on a 160V, 40 Hz supply are :

32, 36

20, 36

25, 20

40, 80

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