International Library of Technology · Scranton, International Textbook Co. · leaf 51
gap. An additional number of ampere-turns mustalso be added, to counteract the effect of the back ampere-turns of the armature.,. 2426 DYNAMO-ELECTRIC MACHINE DESIGN. DESIGN OF 12-HORSEPO^WER DYNAMO. ARMATURE CONDUCTORS.3606. For purposes of illustration, it Avill be conve-nient to consider an… … Fig. 1355. machine, with the armature above the magnet frame. Thefield-magnets are wrought-iron forgings, fitted closely into acast-iron yoke. We will first determine the size of con-ductor in the armature. If the E. M. F. is to be 115 volts,the current corresponding to 12-horsepower is about…
Electrical engineering
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