A 120-KVA, 6.000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W.The maximum efficiency occurs at 3/4 full load. Find: (i) The efficiency of Full-loadand 0.8 power factor. (ii) The efficiency of half-load and unity power factor.(iii) The maximum efficiency.

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of Full-load A 120-kVA, 6,000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W. The maximum efficiency occurs at 3/4 full load. Find: (i) The efficiency and 0.8 power factor. (ii) The efficiency of half-load and unity power factor. (iii) The maximum efficiency.

of Full-load A 120-kVA, 6,000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W. The maximum efficiency occurs at 3/4 full load. Find: (i) The efficiency and 0.8 power factor. (ii) The efficiency of half-load and unity power factor. (iii) The maximum efficiency.

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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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 120-KVA, 6.000/400-V, Y/Y 3-ph, 50-Hz transformer has an iron loss of 1,600 W.
The maximum efficiency occurs at 3/4 full load. Find: (i) The efficiency of Full-load
and 0.8 power factor. (ii) The efficiency of half-load and unity power factor.
(iii) The maximum efficiency.

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