International Library of Technology · Scranton, International Textbook Co. · leaf 404
a coil of one or more turns. In practice these coils areusually formed from a single piece of insulated wire, of suit-able length, wrapped around the core a sufificient number oftimes to make the coil of the requisite number of turns.Each coil so wound covers a certain fraction of the surfaceof the… … Fig. 1147. altogether on one side. The amount of surface of the corecovered by the coil may be called the width of the coil. DIRECT-CURRENT ARMATURE WIND-INGS. UNIPOLAR ARMATURES. 3070. In order that an E. M. F. which acts continuallyin one direction may be generated in a moving conductor,it is…
Electrical engineering
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