The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1438
e given in this book. The following works are recommended as valuablefor reference: Alternating Currents and Alternating Current Machinery,by D. C. and J. P. Jackson; Standard Polyphase Apparatus and Systems,by M. A. Oudin; Polyphase Electric Currents, by S. P. Thompson; ElectricLighting, by F. B.… … ALTERNATING CURRENTS 1389 double the frequency. A current of 120 alternations per second has aperiod of i/eo and a frequency of 60. The frequency of a current is equalto one-half the number of poles on the generator, multiplied by the numberof revolutions per second. Frequency is denoted by the…
Mechanical engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
