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The primary windings of a transformer which has an 80% efficiency are connected to 110-V ac. The secondary windings are

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The primary windings of a transformer which has an 80% efficiency are connected to 110-V ac. The secondary windings are connected across a 2.4-Ω, 75-W lightbulb,
(a) Calculate the current through the primary windings of the transformer,
(b) Calculate the ratio of the number of secondary windings of the transformer.

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a From the efficiency of the transformer we have P 0 80P Use this to calculate …View the full answer


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Related Book For  answer-question
Physics Principles with Applications

Physics Principles with Applications

ISBN: 978-0321762429

7th edition

Authors: Douglas C. Giancoli

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Question Posted: May 05, 2010 00:47:37
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