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 21
phase difference is 90° as in fig. 1,231 or 1,232, the two alternating quantities are said to be in quadrature; when it is 180°, asin fig. 1,233, they are said to be in opposition. When they are in quadrature, one is at a maximum when the otheris at zero; when they are in opposition, one reaches… … m
Electrical engineering
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