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 133
flowing inthe circuit which causes useless heating of the alternator. THE POWER FACTOR 1,121 The mechanical power which is required to drive the alternator is equiv-alent to the actual watts produced, since that portion of the current whichlags, is out of phase with the pressure and therefore… … ALTERNATOR FlG. 1,367.—Ayrton and Sumpner method of alternating current power measurement. Threevoltmeters are required, and accordingly the method is sometimes called the three volt-meter method. It is a good method where the voltage can be regulated to suit the load.In the figure, let the…
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