Q) A transformer rated 200 V/50 V, 10 kVA has a core loss of 100 watts. What is the maximum efficiency of the transformer at 0.8 lagging power factor? Assume full-load copper loss as 200 watts. At what load the maximum efficiency is obtained?

Q) A transformer rated 200 V/50 V, 10 kVA has a core loss of 100 watts. What is the maximum efficiency of the transformer at 0.8 lagging power factor? Assume full-load copper loss as 200 watts. At what load the maximum efficiency is obtained?

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 3.63P: A 23/230-kV step-up transformer feeds a three-phase transmission line, which in turn supplies a...

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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

Q) A transformer rated 200 V/50 V, 10 kVA has a core loss of 100 watts. What is the maximum
efficiency of the transformer at 0.8 lagging power factor? Assume full-load copper loss as 200 watts.
At what load the maximum efficiency is obtained?

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