INDEX 815 



PAGE 



Register, water stage 265 



Regulation, speed of turbines 122, 140 



Regulation of stream flow 689 



Regulation, voltage 363 



effect of reactance 463 



generator, synchronous 291 



hand regulation 363 



K. R. system 369 



line-drop compensation 368 



synchronous condenser 371 



T.A. regulator 336 



transformer 378 



Regulators, T. A 363 



Relays 507 



balanced 521 



control 526 



differential 522 



high-tension, series 525 



high-voltage, high-curreut 371 



interconnected reverse power 518 



low voltage 526 



overload 509 



over-voltage 525 



pilot wire 523 



reverse-power 514 



selection 492 



signal 526 



split-conductor 521 



time settings 494 



trip-free* 526 



underload 526 



Relief valves 141, 221, 251 



Reluctance, air 289 



iron and steel 289 



Reports, preparation 645 



water power 645 



Reservoirs. See Storage reservoirs 159 



Resonance 595 



Rheostats. See Field rheostats 556 



Run-off 51 



mean annual 54 



records 649 



Rupturing capacity of oil circuit breakers 470 



Saturation curves 289 



Secondary power 683 



