Electricity experimentally and practically applied; a book for the beginner and for the practical man, principles, experiments, practical applications and problems (1910)
Ashe, Sydney Whitmore · New York, D. Van Nostrand company · leaf 71
ELECTRO-MAGNETIC INDUCTION 49 field winding be separately excited, an electro-motiveforce will be generated, and the motor will be operating as agenerator. A number of generators have been built in whichabout two volts per foot of active conductor are generated.It is well to remember that the… … Fig. 80. — Motor Generator (Westinghouse). order to be direct must be rectified by a commutator. Iftwo slip rings are connected to the windings at two pointsdirectly opposite to each other on a two-pole machine, analternating cicrrent geiierator will result. A machine maybe constructed with a…
Electricity · Electrical engineering
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