International Library of Technology · Scranton, International Textbook Co. · leaf 63
f these sources of opencircuit may be located with a magneto-bell or with a lampor bell circuit. If the trouble is due to a short circuit, therewill be a flash when the starting box is thrown off. 48 OPERATION OF 10 59. Among the more common sources of short circuit,are these: Short-circuited… … Fig. 21.in the wrong position. If the armature coils or commutatorare short-circuited, the machine may start and turn overpart way and stop again. With a field coil short-circuited,the armature will start only under a heavy current, withaccompanying sparking, and will acquire a high rate of speed.…
Electrical engineering
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