Handbook for the use of electricians in the operation and care of electrical machinery and apparatus of the U. S. seacoast defenses .. (1904)
United States. War Dept · Washington, Govt. print. off. · leaf 120
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 usually on the same shaft. (a) The dynamotor has two armatures, or two separate windings on onearmature…
Electric machinery · Searchlights · Coast defenses
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
