A single-phase transformer with rating of 50 kVA has iron loss of 400 W and full-load copper loss of 750 W. Determine (a) efficiency at full load at unity pf (b) efficiency at half load at 0.90 pf, and (c) efficiency at quarter load at 0.85 pf

A single-phase transformer with rating of 50 kVA has iron loss of 400 W and full-load copper loss of 750 W. Determine (a) efficiency at full load at unity pf (b) efficiency at half load at 0.90 pf, and (c) efficiency at quarter load at 0.85 pf

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 3.32MCQ

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Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

Please answer in typing format solution please

A single-phase transformer with
rating of 50 KVA has iron loss of
400 W and full-load copper loss
of 750 W. Determine (a)
efficiency at full load at unity pf
(b) efficiency at half load at
0.90 pf, and (c) efficiency at
quarter load at 0.85 pf

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