Lessons in practical electricity; principles, experiments, and arithmetical problems; over four hundred illustrations; an elementary text book (1909)
Swoope, C. Walton (Coates Walton), d. 1901 · New York, D. Van Nostrand company · leaf 384
anner 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 dynamos,or diametrically opposite. Thisis usually… … Fig. 353.—Armature Winding. be set to the insulation line between bars 10 and 11, as in dynamos there are usually as many sets of brushes as pole pieces, so that the wrhole number of commutator bars is 36G PR A GTK\ 1L ELECTRICITY. divided into four equal parts for a 4-pole machine, and so…
Electricity · Magnetism
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