Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 75
n the method of inserting resistances inthe field. Ans. Variable resistances are inserted in the circuits leadingto the field magnets and mechanically arranged so that the ALTERNATING CURRENT MOTORS 1,333 resistances are varied simultaneously for each phase in equalamounts. These starting… … . 1,761.—Westinghouse auto-starter. Polyphase induction motors may be started byconnecting them directly to the circuit with an ordinary switch, and the smaller motorsare started in this way in practice. In the larger motors, however, the starting torqueat normal voltage is several times its full…
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