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 81
For thisreason many alternating current problems may be solved graphicallyby the use of right angle triangles, the sides, drawn to some arbitraryscale, to represent the quantities involved, such as resistance, reactance,impedance, etc. Properties of Right Angle Triangles.—In order to under-stand… … 560* PHASEDIFFERENCE4 90° >J FlG. 1,3QS.—Sine curves showing phase relation between current and reverse pressure of self-induction. This reverse pressure, being proportional to the rate of change in the currentstrength, is greatest when the current is at zero value, and zero when the current is…
Electrical engineering
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