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 125
FlGS. 1.355 to 1,357.—Mechanical analogy of wattless current. If a man lift a weight anydistance, as from the position of fig. 1,355 to position of fig. 1.356, he does a certainamount of work on the weight giving it potential energy. When he lowers it to itsoriginal position, as in fig. 1,357, the…
Electrical engineering
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