32. The efficiency e of a transformer is defined as the ratio of the power output...
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32. •• The efficiency e of a transformer is defined as the ratio of the power output to the power input, or e = Ps/Pp.
(a) Show that for an ideal transformer, this expression gives an efficiency of 100% (e = 1.00).
(b) Suppose a step-up transformer increased the line voltage from 120 to 240 V, while at the same time the output current was reduced to 5.0 A from 12 A. What is the transformer’s efficiency? Is it ideal?
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Related Book For
College Physics Essentials Electricity And Magnetism Optics Modern Physics Volume Two
ISBN: 9781032337272
8th Edition
Authors: Jerry D. Wilson, Anthony J. Buffa, Bo Lou
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