Practical applied electricity; a book in plain English, for the practical man. Theory, practical applications and examples (1911)
Moreton, David Penn, 1882- · Chicago, The Reilly & Britton co · leaf 241
ints on the commutator (p) represents the number of magnet poles where brushes may be connected to conduct the elec-tricity to and from the armature winding. The proper loca-tion of the brushes is shown in the figure and the numberof paths (b) through such a winding is equal to the numberof poles… … Fig-. 195 the field strength, speed, and number of inductors in seriesare the same in both cases. The e.m.f. equation for such amachine is Z X ^ X P X r.p.m. E = - (125) 108 X 60 X b The number of brushes canbe made less than the num-ber of poles by permanentlyconnecting the various com-mutator…
Electrical engineering
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