(b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a high voltage winding resistance of 0.15 Q and a low voltage winding resistance of 0.0125 Q. Neglect the effect of primary and secondary inductances and calculate the transformer efficiency at the rated load and unity power factor.

(b) A 40-kVA, 2600/1300-V, single-phase transformer has a core loss of 620 W. The transformer has a high voltage winding resistance of 0.15 Q and a low voltage winding resistance of 0.0125 Q. Neglect the effect of primary and secondary inductances and calculate the transformer efficiency at the rated load and unity power factor.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.57P: A two-winding single-phase transformer rated 60kVA,240/1200V,60Hz, has an efficiency of 0.96 when...

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