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 16
reaches its maximum value in the opposite direction. 1.(11)1 II AW A / NS ELECTRIC ITY Ques. Define the term period. Ans. This is the time of one cycle of the alternating current. Ques. What is periodicity? Ans. A term sometimes used for frequency. Frequency.—If a slowly varying alternating current… … EIGHT POLE ALTERNATORFREQUENCY 60 PlC. 1,223. -Diagram of alternator and engine, illustrating frequency. The f- i\i /<? per sei ond is equal to the revolution of armature per »«< ond multipled by one-half thenumber of pole; per phase. In the figure the armature imks 6 revolutions to one of…
Electrical engineering
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