Electrical machinery; a practical study course on installation, operation and maintenance (1921)
Annett, Fred Anzley · New York [etc.] McGraw-Hill book company · leaf 240
hegenerator. In Fig. 241 the direction of tlie cun-ent in each conductorabove the Ji(u1r;d axis is away fi-om the observer, and in eachof those below Ihis axis the cnncMit is toward (he observer. DIRECT-C UHREN T MO TORS 223 The direction of the field in each case is upward, consequentlyevery… … Fig. 241.—Diagram of direct-current motor. Effects of Changing Brush Position.—Should the brushesbe moved to the position shown in Fig. 242, the armature willrefuse to rotate, for then the direction of the current in thearmature conductors between a and h and those between a andd will be toward the…
Electric machinery
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