A 500kW transformer is required to operate for 5 hours at % load and 8 hours at full load and at no load for rest of the period of a day. Calculate their all day efficiencies and decide which of the two transformers be chosen if the full load losses in them are as follows: Transformer A-Iron loss 1 % add copper loss 25%. Transformer B- Iron loss 1 %% and copper loss 1 %%.

A 500kW transformer is required to operate for 5 hours at % load and 8 hours at full load and at no load for rest of the period of a day. Calculate their all day efficiencies and decide which of the two transformers be chosen if the full load losses in them are as follows: Transformer A-Iron loss 1 % add copper loss 25%. Transformer B- Iron loss 1 %% and copper loss 1 %%.

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 3.9P

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