Dynamo electric machinery; its design, construction, and operation; direct-current machines (1915)
Sheldon, Samuel, 1862-1920, Hausmann, Erich, 1886- joint author · New York, D. Van Nostrand Company; · leaf 207
d by an insulating box, but are not surrounded byany masses of metal. This fact, together with the factthat the armature is of such shape as to cause great air GENERATORS. 195 disturbances, insures exceptionally good ventilation of thearmature. This machine is of relatively slow speed, thelarger… … designed that it connects the coils of highest E.M.F. inseries with one another to the external circuit, and con-nects the coils of medium E.M.F. in multiple with oneanother to the external circuit, while those of smallestE.M.F. are cut out entirely from the circuit. The bearings are…
Electric machinery
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