A 4160.240 V single-phase 60 Hz transformer is rated for 95 kVA. It is determined that at full load the transformer has losses of • 1 kW of core losses •1.2 kW of copper losses What is the efficiency at full-load with unity power factor?

A 4160.240 V single-phase 60 Hz transformer is rated for 95 kVA. It is determined that at full load the transformer has losses of • 1 kW of core losses •1.2 kW of copper losses What is the efficiency at full-load with unity power factor?

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

A 4160.240 V single-phase 60 Hz transformer is rated for 95 kVA. It is determined that at full load
the transformer has losses of.
• 1 kW of core losses
1.2 kW of copper losses
What is the efficiency at full-load with unity power factor?

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