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 14
the perpendicular be let fall at a units distance from theapex A, as at B, _ . BC BC Smp=AB = -r = BC This line BC is called the natural sine of the angle, and its values for different angles are givenin the table on page 451. should carefully review the above mentioned chapter beforecontinuing… … In the diagram the variousalternating current termsare graphically defined. The alternating current,as has been explained,rises from zero to a maxi-mum, falls to zero, reversesits direction, attains a max-imum in the new direction,and again returns to zero;this comprises the cycle. This series of…
Electrical engineering
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