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Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc. (1916)

American Technical Society · Chicago : American Technical Society · leaf 48

An illustration from Cyclopedia of applied electricity : a general reference work on direct-current generators and motors, storage batteries, electrochemistry, welding, electric wiring, meters, electric lighting, electric railways, power stations, switchboards, power transmission, alternating-current machinery, telegraphy, etc., 1916, leaf 48
to the same commutator bar. In practice the commutatoris usually made up of a number of parallel bars of copper set aroundon, and separated from each other by, insulating material; and thearmature is made up of a number of sections, as in Fig. 30, whichrepresent a Gramme ring winding. This, and… … Fig. 30. Diagram of Coils and Commu-tator Sections 38 PRINCIPLES 29 field, generates an e. m. f. in the conductors wound upon it; and afield-magnet, whose function it is to provide a flux for the conductorsto cut as they revolve. These two parts are always present in allgenerators, whether for…

Electrical engineering

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