An elementary book on electricity and magnetism and their applications (1919)
Jackson, Dugald C. (Dugald Caleb), 1865-1951, Jackson, John Price, b. 1868, Black, Newton Henry, b. 1874 · New York, The Macmillian Co · leaf 574
. This limitationis most keenly felt in the design of large-horse-power slow-speedmotors for freight service. One method of providing increasedspace for the motors is that adopted by the Pennsylvania Rail-road for their tunnel work, shown in figure 364, where twomotors, each of 2000 horse power,… … Contact Shorn Contact Shoes Fig. 364. — Electric locomotive driven through side rods. as it has already displaced horse cars and cable cars for surfacetransportation in our cities. At present, however, the electriclocomotive is mainly used to haul trains into cities, throughtunnels, and over…
Electricity · Magnetism
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