International Library of Technology · Scranton, International Textbook Co. · leaf 139
ng of a railway generator consists of a great manyturns of wire, and it must not be forgotten that if the shunt-field circuit is suddenly broken, an exceedingly high E. M. F.will be induced in the winding, due to the sudden decreasein the magnetization threading through the field coils. Thefield… … ^/7t./r?t Fie/a. Armarur&, UlMMMiy Fig. 20 shows the arrangement of the field switch andpilot lamp vised on the board in Fig. 19. The switch S hastwo contact segments «, a\ and thetongue t is wide enough to bridgeover the gap between them. Theswitch is shown in the position that itr occupies…
Electrical engineering
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