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 120
(as in fig. 1,346) the power factor is unity, assuming nodistortion of current and pressure waves. In all other cases thepower factor is less than unity that is, the effect of lag or lead isto make the power factor less than unity. The eifect of lag on the power factor may be illustrated byfig.… … Pic 1.349.—Effect of lag oo the power factor. When the current lags behind the pressurethe power factor becomes less than unity. It will be seen that the power carve projectsbelow the tero line giving the «h»Hj^ area which represents negative power which mustbe subtracted from the + -areas above…
Electrical engineering
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