INDEX. 



IV. 



Phase, Definition 9 



Phase Difference Between 

 Current and Volts, Deter- 

 mination of 29 



Polyphase Circuit 294 



Power Factor 58, 60 



Power Factor, Determination 



of 61 



Power in Alternating Circuit 



56, 95 



Power in 3-phase Circuit 302 



Power, Measurement of 77, 



80, 112 

 Power, Measurement of, by 



Three Ammeters 80 



Power, Measurement of, by 

 Three Voltmeters 77 



Rate of Change of Current... 13 



Reactance 35 



Regulation of Transformer 



130, 135 



Resistance of Windings of In- 

 duction Motor 365 



Resistances, Iron Wire, Im- 

 pedance of 50 



Resistances, Self-induction of 49 



Resonance 120 



Resultant Currents 71 



Resultant Voltage 18, 32 



Resultant Voltage of Two 



Alternators 25 



Resultant of Two Vectors ... 23 

 Retardation Method of Measur- 

 ing Losses 254 



R. M.S. (Root of Mean Squares) 



Value 90, 437 



Rotating Contact for Curve 



Tracing 84 



Rotating Field, Constancy of 344 

 Rotating Field, Production of 341 



Rotary Converter 313 



Rotary Converter, Characteris- 

 tic 321, 330 



Rotary Converter. Compound- 

 ing 338 



Rotary Converter, Effect of 



Varying Excitation ...327, 333 

 Rotary Converter, Loss of Vol- 

 tage in 325 



Rotary Converter, Losses in... 314 

 Rotary Converter Magnetisa- 

 tion Curve 318 



Rotary Converter, Polyphase.. 315 

 Rotary Converter, Ratio of 



Transformation 314, 318 



Rotor of Induction Motor 348 



Rule, Fleming's 3 



Scales of Instruments 91 



Self-i iduction and Capacity 

 in Parallel 121 



Self-induction and Capacity 

 in Series 114 



Self-induction, Coefficient of... 14 



Self-induction, Effect on Im- 

 pedance 42 



Separation of Losses in Trans- 

 former 149 



Short Circuit Characteristic of 

 Alternator 240 



Single-phase Induction Motor 399 



Single-phase Induction Motor 

 Starting Devices 402 



Slip of Induction Motor 350 



Slip of Induction Motor, 

 Measurement of 362 



Spiral Resistances, Self-induc- 

 tion of 50 



Split Dynamometer, Efficiency 

 of Transformer by 166 



Star Connection .' 299 



Starting Devices for Single- 

 phase Motors 402 



Starting Resistance of Induc- 

 tion Motor 397 



Stator of Induction Motor ... 348 



Sumpner Method of Testing 

 Transformer 170 



Synchroniser 258 



Synchronising Alternators, 

 Connections for 262 



Synchronous Motors 266 



Synchronous Motors, Diagram 

 of 286 



Synchronous Motors, Method 

 of Starting 268 



Synrhronous Motors, Varia- 

 tion of Excitation 271 



Synchronous Motors with 

 Varying Load 283 



Three-ammeter Measurement 



of Power 80 



Three-phase Circuit 296 



Three-phase Circuit, Connec- 

 tions of 299 



Three-phase Circuit, Power in 302 



Three-phase Current 295 



Three Voltmeter Measure- 

 ment of Power 77 



Torque of ' Induction Motor 



355, 360 



Transformer, Auto- 179 



Transformer, Copper Losses ... 151 

 Transformer, Determination 



of Magnetising Current 141 



Transformer, Determination 

 of Magnetising Current at 

 Various Frequencies 146 



