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 17
ns per second, hut in multipolar machines, it isgreater in proportion to the number of pairs of poles per phase. ALTERNATING CURRENTS 1,005 Thus, in an 8 pole machine, there will be four cycles per revolution.If the speed be 900 revolutions per minute, the frequency is 2x^ = 60. The symbol —^ is… … TWO-POLE ALTERNATORFREQUENCY 60 Fig. 1,224—Diagram answering the question: Why are alternators always built multipolar?They are made multipolar because it is desirable that the frequency be high. It is evidentfrom the figure that to obtain high frequency would require too many revolutions of…
Electrical engineering
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