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 123
FACTOR 1,111 but not in an available form for external work. The false powerdue to the so called wattless current pulsates in and out of thecircuit without accomplishing any useful work. An example of wattless current, showing that the power factor is zerois illustrated in fig. 1,353. Here the… … Pig. 1,353.—Example of wattless current showing that the power factor is zero when thephase difference between current and pressure is 90°. For zero power factor the currentmay lead 90° as in fig. 1,352, or lag 90° as here shown. Since the shaded or negative areas =the plus areas, the average power…
Electrical engineering
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