Question

Explain how the energy losses in a sample of ferromagnetic material subjected to an alternating magnetic field depend on the frequency and the flux density. What particular property of the material can be used as a measure of the magnitude of each type of loss? The area of a hysteresis loop plotted for a sample of steel is 67.1 cm, the maximum flux density being 1.06T. The scales of B and H are such that 1 cm 0.12 T and 1 cm 7.07 A/m. Find the loss due to hysteresis if 750 g of this steel were subjected to an alternating magnetic field of maximum flux density 1.06 T at a frequency of 60 Hz. The density of the steel is 7700 kg/m

Answer 1

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