Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U.S. seacoast defenses (1902)
United States. War Dept, Anderson, George Lucius, 1849-1934 · Washington, Govt. Print. Off. · leaf 55
Fig. 45 is a 4-pole, 20-coil, ring, fourwindings through armature, makingits resistance between poles = ^V ofthat of the single winding. By con-necting each bar of the commutatorwith the one opposite, two brushes90° apart will be sufficient. Fig. 46 is a 4-pole, 17-coil, wave, drumwinding. Back…
Electric machinery · Searchlights · Coast defenses
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