Gerard, Eric Mary, 1856-1916 · New York W.J. Johnston · leaf 116
coil. iOO HYSTERESIS—MOLECULAR MAGNETIC FRICTION. {c) Power and Torque Tests.—The loss of energy by mo-lecular magnetic friction and eddy currents may be deter-mined by moving the material to be tested in a uniformmagnetic field, and measuring the power required therefor. This method is commonly… … Fig. 36.—Instrument Connections for Altering Current Hysteresis Tests. excitation. The difference in work consumed in these casesis the energy expended in molecular magnetic friction andeddy currents in the armature. A similar method suitable for testing of iron, is thefollowing : A uniform…
Electricity · Magnetism
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