International Library of Technology · Scranton, International Textbook Co. · leaf 438
Fig. les.j CURRENT APPARATUS. 280a 4158. Revolving fields are sometimes built so as torequire only one exciting coil for all the poles. A field ofthis type is shown in Fig. 1636. The exciting coil c is cir-cular. The field casting is in two parts («and b, held togetherby bolts/, and each casting…
Electrical engineering
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