Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 81
ER X CONSTRUCTION AND EXCITATION OF DIRECT-CURRENT MACHINES 63. Multipolar Construction.—Fig. 79 shows a two-pole ma-chine and also a six-pole machine built for the same output, themachines having the same armature diameter and the same totalnumber of lines of force crossing the air gaps. The…
Electrical engineering
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