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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 78

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 78
clockwise, starts to un-cover segment B and to cover segment D, so that at the end of thefirst quarter of the period of commutation, the result will be as in-dicated in Fig. 65 (b), for the ideal case. Similarly, Fig. 65 (c), (d),and (e), represent, respectively, the conditions at the end of the… … Fig. 64. Complete Commutation Curves for Practical Machine 62 PRINCIPLES 53 and figures. It is seen from thesethat the conditions of Fig. 61 obtainthroughout, the current in theshort-circuited coils being zero atthe middle of the period of com-mutation; so that it may be con-cluded that the act of…

Electrical engineering

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