A transformer having 200VA rating, 220V. Its open circuit and short circuit test results are given below. Core losses 12W Open circuit voltage 100+your reg number Copper losses 20W Short circuit voltage. 30V. Make a table and calculate efficiency of transformer at 25%, 50%, 75%, 100% and 125% of full load.

A transformer having 200VA rating, 220V. Its open circuit and short circuit test results are given below. Core losses 12W Open circuit voltage 100+your reg number Copper losses 20W Short circuit voltage. 30V. Make a table and calculate efficiency of transformer at 25%, 50%, 75%, 100% and 125% of full load.

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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Q1: During the separation of transformer core losses experiment: 1. Why should always keep the ratio of V/F constant? 2. If the transformer is operated at rated frequency but at voltage lower than rated value, how do you expect the following quantities to change? And why? i. Hysteresis loss ii. Eddy current loss iii. No-load current
3. An ideal transformer with a 500 turns primary and 125 turns secondary windings delivers 400W to a 40 load. The resistance of the primary windings is 160. Find the primary current and voltage.