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 57
s themselves, but to the fact that in the case of alter-nating current very high pressures may be employed, thuspermitting a given amount of energy to be transmitted with arelatively small current. HAWKIXS ELECTRICITY In me case of direct current systems, commutator troubleslimit the transmission… … Fig. 2.179.— End at e--.:_. .-; Er.i :: 5 .-. ... .v.. .. .-.;- = .-;- . ■-. !;. :: -:.--. ■-_ r. ..-.-. i. :.;vr.:.-.i:y. ■..■;-■ i.-.. .: £ Relative Weights of Copper Required by PolyphaseSystems.—A comparison between the weights of copper re-quired by the different alternating current systems is…
Electrical engineering
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