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144 air 128,157 gate 148 Johnson hydraulic 156 operation and control 149 pivot 155 reUef 141, 221, 251, 258 Velocity of water 106, 107, 116, 798 canals 106 flumes 110 pipe lines 114, 246 tunnels 113 Ventilation, generators 173, 345 power-house 173 Digitized by Google INDEX 821 Venturi meten 262 registers 264 manometers 265 Voltage 270 distribution 273 exciter 351 generator 270, 316 induced 280, 375 transformers 386 transmission 4, 271 Voltage drop in conductors 639 Voltage regulation 363 generators 291 transformers 378 Voltage rise. See Over-voltage 525, 593 Voltage test, generators 326, 331 oil circuit breakers 497 transformers 386 Voltmeters 540, 541 Voltmeter plugs and receptacles 559 W Water 39 critical temperature 40 effect of atmospheric pressure 42 energy of flowing water 67 latent heat 41 measurements 43 properties. .*. 39 quantity of flowing water 67, 795 safe velocities 107 specific gravity 39 specific heat 42 velocity 66, 106, 110, 113, 114, 116, 121, 798 weight 39 Water conductors 104 canals 106 classification 104 flumes 110 pipe lines 114 tunnels 113 Water hammer 138 Water flow indicators, transformers 435 Water power, history of developments 1 Water power in United States 16, 17 Water power in the world 13 Water power from inland waterways 22 Digitized by Google 822 INDEX Water power, relation to steam and gas 27 Water power reports 645 Water stage registers 265 Water storage. See Storage of water 686 Water supply, source 44 Water supply systems, power from 23 Waterways, power from 22 Water wheels. See Turbines 202 Watthour meters 549 Wattmeters, indicating 542 Waves, form 282, 301 traveling 696 Weir 58 Wetted perimeter 107, 795 William and Hazen formula 116 Windings, generator 282, 285, 295, 325 transformer 391, 438 Wiring, station 626 cables in duct or conduit 628 control and instrument wiring 629, 633 corona limit of voltage 639 • economical considerations 639 exciter and field wiring 631 general practice 631 generator and transformer 631 high-tension 633 insulation 625 open wiring 626 resistance and reactance of cables : 642 single V8. multiple conductors 629, ^ spacing of conductors 627 voltage drop 639 Wooden-stave pipe. , 131 Digitized by Google Digitized by Google Digitized by Google Digitized by Google THIS BOOK IS DUE ON THE IiABT DATE STAJCPED BBI«OW AN INITIAL FINE OP 26 CENTS WILL BE A«9E5S£D FOR FAILURE TO RETURN THIS eOOK ON TH€ DATE DU£. f^AR 10 19; !fl ,^. Nr rrfic ic;sjJ!U rC© * lap f l^fifM-T/87 Yu 19799 yy^f'^U "V. VT" f M ■■» J 9tUM BWI'JIIHI ■ L P" Jifi LIJ J THE UNIVERSITY OP CALIFORNIA LIBRARY i Digitized by Google 4. 