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 13
- e_- =.- > i; - - ALTERNATING CURRENTS 1,001 and are changed into direct current by the action of the com-mutator. It was therefore necessary in that chapter, in pre-senting the basic principles of the dynamo, to explain thegeneration of alternating currents at length, and the graphicmethod of… … A /\ NATURAL SINE OF ANGLE 4> \ Fig. 1,219—Diagram illustrating the sine of an angle. In order to understand the sine curve,it is necessary to know the meaning of the sine of an angle. This is denned as the ratioof the perpendicular let fall irom cny point in one side of Ihe angle to the other…
Electrical engineering
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