Lessons in practical electricity; principles, experiments, and arithmetical problems, an elementary text-book (1902)
Swoope, Coates Walton. [from old catalog] · New York, D. Van Nostrand company · leaf 384
o spark at the brushes, but the faultlies in the manner of adjusting the brushes, etc., rather than in the machine itself. Someof the causes of sparking aregiven in ^ 340. 339. Position of theBrushes.—The brushes mustbe first set on the commutatorat the opposite ends of thediameter, in bipolar… … Fig. 353.—Armature Winding. be set to the insulation line between bars 1 and 20, andbetween bars 10 and 11, as in Fig. 352. In multipolardynamos there are usually as many sets of brushes as ])olepieces, so that the whole number of commutator bars is 366 PRACTICAL ELECTRICITY, divided into four…
Electricity · Magnetism
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