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Hysteresis loss in a core is proportional to the frequency, while eddy current loss is proportional to

  • A.the square of the frequency
  • B.the frequency
  • C.the square root of the frequency
  • D.the reciprocal of the frequency

Answer: A

The induced voltage driving the eddy currents rises with frequency and so does the resulting current, so the loss goes as the square. Separating the two by measuring total loss at two frequencies is a standard core test.

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