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 569
In someplaces the direct current has been used at a high voltage, suchas 1200 or 2400 volts. On these lines 1200-volt d-c. motorshave been used. Another method is to generate three-phasealternating current and then by transformers to raise the voltagefor the transmission lines. At substations along… … Alternating Current \Generator A«I>» TurKin* V -1 Fig. 360. — Three-phase transmission and direct-current railway. used in and about some of our larger municipalities. Stillanother method is the single-phase alternating-current system,which has the advantage that voltages as high as 11,000…
Electricity · Magnetism
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