Small, Sidney Aylmer, 1876- [from old catalog] · Chicago, F. J. Drake & co · leaf 341
omelectrical to mechanical power. 223.8 K. W .=223800 watts.223800-^746=300 H. P. Efficiency==SL Both being expressed in same units, a • 3QO emciency= =0.0. J 240 Efficiencies are usually multiplied by 100 and thencalled per cent. Efficiency of 0.8 would be called 80%efficiency. 342 ELEMENTARY… … Fig. 161. Automatic Circuit Breaker with Low Voltage Release,Tell-tale Switch and Magnetic Blow-out. With the large currents handled in railroad workit has become necessary to define a switch as a pieceof apparatus to close circuits. ELECTRICAL WORK—POWER 343 Apparatus to open circuits* are now…
Electricity
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