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 139
edby this arrangement? Ans. The retardation is due to eddy currents induced bymoving the disc or drum through the magnetic field. Thereaction thus induced varies inversely with the magnitude of HAWKINS ELECTRICITY the force with which the disc or drum is urged through the fieldand hence ir. the… … FIGS. 2.313 to 2.321.—General .: e limit overload circuit opening relays with covers removed. The construction of this relay is mrniar to that of the in% ease time Emitexcept that it has a H! mhiii spi •>sed between the plunger and diaphragm. The fJnnpii compresses the spring and further motion…
Electrical engineering
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