Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 75
Fig. 64. Fig. 65. Stages in the development of the Gramme ring winding. distribution will always be as indicated and the voltage betweenthe points / and g will be constant in magnitude and direction. 59. Commutator and Brushes.—Machines have been con-structed in which the stationary contacts B- and…
Electrical engineering
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