International Library of Technology · Scranton, International Textbook Co. · leaf 425
e ofthe motor, because the weak fields in the first place causepoor commutation, and in the second place reduce thecounter E. M. F. and allow more current to flow than thebrushes can stand. It is safe to say that one-half ofthe trouble on cars turned in for blowing fuses can be traceddirectly or… … Fig. 63. Fig. e4. apart along the line A B. In Fig. 63, the two coils are con-nected correctly, and the general path of the lines of forceforms the curved four-sided figure at the center. In Fig. 64,the two field coils have been left off to simplify the drawing, 24 ELECTRIC RAILWAYS. 81 —B but the…
Electrical engineering
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