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Why a transformer Noise during its running condition ?
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Answer Posted / kowsar shaik
Transformer noise is caused by a phenomenon called
magnetostriction.if a piece of magnetic steel sheet is
magnetized it will extend itself.A transformer is
magnetically excited by an alternating voltage and current
so that it becomes extended and contracted twice during a
full cycle of magnetizationThis extension and contraction
is not uniform, consequently the extension and contraction
varies all over a sheet.so noice forms in all sheets of tf.
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