Principles and practice of electrical engineering (1914)
Gray, Alexander, 1882-1921 · New York [etc.] McGraw-Hill Book Company, inc. · leaf 77
e connected together. For the samereason the stationary contacts a and c may also be connectedtogether as shown in Fig. 68. The external circuit to be suppliedwith current is connected between the terminals T+ and !T_.This current will divide when it enters the machine and passthrough the four… … Fig. 70.—Coil of a drum winding. the remainder of the winding being inactive. To overcome thisobjection most modern machines have what is called a drum wind-ing made with coils which are shaped as shown in Fig. 70 and areplaced on the surface of the armature core in such a way that theconductors a…
Electrical engineering
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