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The area enclosed by the hysteresis loop represents

  • A.the energy stored in the magnetic field at saturation
  • B.the permeability of the material at the working point
  • C.the eddy current loss per unit volume per cycle
  • D.the energy dissipated per unit volume per cycle

Answer: D

Each traverse of the loop dissipates that energy as heat in the material, so the loss rises in direct proportion to the frequency. Eddy current loss is a separate mechanism and rises as the square of the frequency instead.

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