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 267
Fie. 1,561.—Triumph brushes and brush holder. The holder is of the box type provided withan adjustable tension spring, making the brushes self-feeding. Each holder is carried oninsulated studs attached to a cast iron yoke which is mounted on the bearing. … Fig. 1,562.—Diagram of Y connection with a common return wire. When the three linesleading from a, b and c are equal in resistance and reactance, or in other words when thesystem is balanced, the currents of the three phases are equal and are 120° apart in phase(each current lagging behind its…
Electrical engineering
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