A 10 kVA, 600V/240V single-phase transformer has full load copper loss of 30U watts and a core loss of 200 watts at rated voltage. Its efficiency when operating at half-load and 0.6 p.f. lagging is . O a) 85.7 % O b) 90.9 % Oc) 91.6 % d) 95.2 %

A 10 kVA, 600V/240V single-phase transformer has full load copper loss of 30U watts and a core loss of 200 watts at rated voltage. Its efficiency when operating at half-load and 0.6 p.f. lagging is . O a) 85.7 % O b) 90.9 % Oc) 91.6 % d) 95.2 %

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 3.11MCQ: For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the...

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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

A 10 kVA, 600V/240V single-phase transformer has full load copper loss of 300
watts and a core loss of 200 watts at rated voltage. Its efficiency when operating at
half-load and O.6 p.f. lagging is ...
O a) 85.7 %
O b) 90.9 %
Oc) 91.6 %
O d) 95.2 %

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