When rated voltage at rated frequency is applied to a single phase transformer the hysteresis and eddy current losses are 420 watts and 150 watts, respectively. Find the new core loss if voltage is increased by 10 % and frequency decreased by 5%.

When rated voltage at rated frequency is applied to a single phase transformer the hysteresis and eddy current losses are 420 watts and 150 watts, respectively. Find the new core loss if voltage is increased by 10 % and frequency decreased by 5%.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter28: Three-phase Transformers

Section: Chapter Questions

Problem 4RQ: An open-delta three-phase transformer system has one transformer center-tapped to provide a neutral...

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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

When rated voltage at rated frequency is applied to
a single phase transformer the hysteresis and eddy
current losses are 420 watts and 150 watts,
respectively. Find the new core loss if voltage is
increased by 10 % and frequency decreased by 5%.

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