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 87
essed air. should pressures Ques. For whatswitches be used? Ans. For pressures above 1,100 volts remote control 1,606 HAWKI.XS ELECTRICITY Ques. Describe the operating mechanism of a remotecontrol, hand, and electrically operated switch. Ans. For hand operation, the mechanism between the oper-ating… … - 830.—Pacific oil switch with solenoid control, designed for 60,000 and 70.000 voltinstallations; it is capable of handling a 25,000 kw. generating station. The breakis horizontal, made by the rotation of a flat member edgewise through the oiL Thesolenoid. .. e outer position, has a free start…
Electrical engineering
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