Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 121
the surface layers of the iron and eddy currents wouldflow through the solid mass, see page 55. The power required to maintain these currents is called theeddy current loss in the armature andis kept below 3 per cent, of the arma-ture output by lamination of the core,see page 58. Since the e.m.fs.… … Fig. 119.—Reversal offlux in the armature core asthe armature rotates. 109. Stray Loss consists of Stray lossCopper loss Mechanical lossesIron losses Windage Bearing friction[Brush friction(Hysteresis loss[Eddy current loss IaRa2 + IfRf The term stray loss is used in practice to include the…
Electrical engineering
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