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How can eddy currents be reduced in a metallic conductor ? |
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Answer» Solution :(i) To reduce eddy currents the conducting (metallic) parts are built of a LARGE number of thin layers, known as LAMINATIONS, SEPARATED by an insulating material like lacquer. The plane of laminations is arranged parallel to the magnetic field so that they CUT ACROSS the eddy current paths. Thus, effectively increases the resistance of the possible paths to the flow of eddy currents and eddy currents are minimised. (ii) Eddy currents may also be reduced by punching holes or rectangular slots in metallic conductors, as these reduce the area available to the flow of eddy currents. |
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