A 40KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions, losses thus measured being 215W and 390W respectively. Calculate the (a) Efficiency when supplying half full load at a power factor of 0.75. (b) Load corresponding to maximum efficiency. Efficiency = Load corresponding to maximum efficiency =

A 40KVA, single-phase transformer is tested on both open-circuit and short-circuit conditions, losses thus measured being 215W and 390W respectively. Calculate the (a) Efficiency when supplying half full load at a power factor of 0.75. (b) Load corresponding to maximum efficiency. Efficiency = Load corresponding to maximum efficiency =

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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