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 260
by ztli co:::r;:,speed of the motor. OPERATION OF MOTORS 679 Ques. Describe the second method. Ans. This niclliod of regulating the speed of a series motoris shown in fig. 757. The current through the armature willflow through all the field windings when the position of the switchlever S, is on… … Fig. 756.—Spead regulation of shunt motor by variable resistance in the armature circuit. Ques. How does the speed vary with respect to variationof field strength ? Ans. Decreasing the field strength of a motor increases itsspeed, while increasing the field strength decreases the speed. Under the…
Electrical engineering
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