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 250
tion while OPERATION OF MOTORS 669 the field is building up. If the motor be shunt wound, self-induction delays the current through the field coils, but thatthrough the armature is not impeded by such cause. When thearmature begins to revolve, reverse voltage is developed whichincreases with the… … Fig. 741.—Starting rheostat with no voltage and overload release. The no voltage releasepermits the starting lever to fly to the off position should the voltage fail momentarily,thus protecting the motor against damage should the voltage suddenly return to the line.The movement of the lever is due…
Electrical engineering
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