Henry and Hora's modern electricity; a practical working encyclopedia (1915)
Henry, James. [from old catalog], Hora, Karel Jan, 1881- [from old catalog] joint author · Chicago, Laird & Lee, inc. · leaf 170
he high pressure currents are carried either from thecentral station to special sub-stations, (or transformer sta-tions,) from where low pressure mains distribute the currentto the houses, or the high pressure current enters eachbuilding in high pressure mains, and is transformed in thebuilding by… … Fig. 54. Fig. 55. EXAMPLE 64.The primary coil of a transformer has 1000 turns, thesecondary 100 turns. What is the ratio of their windings?1000 Too = 10, 10: l Ans 168 MODERN ELECTRICITY EXAMPLE 65. A transformer of 4000 turns in the primary coil givesthe secondary winding a pressure of 250 volts.…
Electrical engineering
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