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 117
86 HANDBOOK FOR ELECTRICIANS. The revolutions varying as the C and E of supply and therefore as their pro-duct, are recorded as units, tens, etc., on the dials. The shunt field is added tocompensate for friction. A copper disc on the armature shaft revolves betweenthe poles of an adjustable magnet,… … 114. Measures Electrical Energy. 3. Dynamotors, motor generators, and boosters are rotating transformers ofdirect current having a dynamo and a motor armature winding and two com-mutators iisually on the same shaft. (a) The dynamotor has two armatures, or two separate windings on onearmature…
Electric machinery · Searchlights · Coast defenses
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