Open Circuit test: 3000 V 0.5 A 350 W; Short Circuit test: 150 V 10 A 500 W Calculate the efficiency of the transformer at (a) full-load, 0.8 p.f. (b) half-load, unity p.f. (c) calculate the kVA output at which the efficiency is maximum..

Open Circuit test: 3000 V 0.5 A 350 W; Short Circuit test: 150 V 10 A 500 W Calculate the efficiency of the transformer at (a) full-load, 0.8 p.f. (b) half-load, unity p.f. (c) calculate the kVA output at which the efficiency is maximum..

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 3.3P: Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source...

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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

The following figures were obtained from tests on a 30-kVA, 3000/110-V

transformer:

Open Circuit test: 3000 V 0.5 A

350 W;

Short Circuit test: 150 V 10 A 500 W

Calculate the efficiency of the transformer at

(a) full-load, 0.8 p.f.

(b) half-load, unity p.f. (c) calculate the kVA output at which the efficiency is maximum..

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