Article
Article
Direct-current motor
Article By:
Cleveland, L. F. Formerly, Department of Electrical Engineering, Northeastern University, Boston, Massachusetts.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.199200
An electric rotating machine energized by direct current and used to convert electric energy to mechanical energy. It is characterized by its relative ease of speed control and, in the case of the series-connected motor, by an ability to produce large torque under load without taking excessive current. The output of this motor is given in horsepower, the unit of mechanical power. Normal full-load values of voltage, current, and speed are generally given.
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