Chapter 4 Additional Problems - McGraw Hill

A 15 kVA, 2400:240/120 V, 60 Hz, two-winding transformer is to be reconnected as a 2400:2520 V step-up autotransformer. From test work on the two-winding transformer, it is known that its rated voltage core losses and coil losses are 280 W and 300 W, respectively. ................
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