Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 78
chines are shown which are alikein every respect except that machine A has a ring coil betweentwo adjacent commutator segments whereas machine B has adrum coil. In Fig. 72, the same two machines are shown with quarter ofthe armature winding in place, the conductors being numbered inthe order in…
Electrical engineering
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