Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1308
trans-formed to a high voltage, which economical distribution dic-tates, alternating current is almost invariably used for allexcept very small electrical power transmissions. Wherever Rotary Converters 1279 direct current is used^ as in direct current railway lines^ thealternating current must be… … Fig. 599 WESTINGHOUSE 300 K. W. ROTARY CONVERTER, COO D. C. VOLTS, 500D. C. AMPERES, THREE-PHASE, 60 CYCLES higher efficiency and lower cost of the rotary converter ac-counts for tlie ahnost universal practice of using it in pref-erence to the motor-generator on low frequencies. Eotary converters…
