4io 



INDEX. 



Current, harmonic, rate of change of, 57 

 loci, 82 



locus of the transformer, 248 

 transformer, the, 46, 234 

 Curves of current, 24, 35 



of electromotive force, 24, 35 



and current, examples of, 

 79, 81 



Decay and growth of current in an induc- 

 tive circuit, 7 1 



DeMoivre's theorem, 91 



Dial synchronizer, the, 336 



Direct-current and alternating-current cal- 

 culations contrasted, 19 



Distributed armature windings, 9 



capacity and concentrated capacity, 2 1 



Dobrowolsky's double-current generator, 



193 



Double-current generator, the, 192 

 Drop of voltage in transmission lines, 84 



Effective values and average values of 

 harmonic electromotive forces 

 and currents, 60 

 of alternating electromotive 



forces and currents, 30 

 Efficiency, all-day, 212 

 Emmet's table of line reactances, 347 

 Electric charge, definition of, 362 



momentum, 354 



Electrical and mechanical analogies, 367 

 Electrodynamometer, the, 39 

 Electromotive force and current curves, 



examples of, 79, 81 

 curves, 24, 35 

 of the alternator, 117 

 self-induced, 358 

 Electrostatic capacity, 365 



voltmeter, 41 

 Equivalent reactance of transformer and 



receiving circuit, 206 

 resistance of transformer and receiv- 

 ing circuit, 206 



Farad, definition of, 366 



Field excitation of the alternator, IO 



Flux turns, definition of, 360 

 Frequencies, standard, 140 

 Frequency and speed, 23 

 changer, the, 269 



Generator, the alternating-current, I 



the double-current, 192 

 Ground detector, 340 

 Growth and decay of current in an induc- 

 tive circuit, 71 



Harmonic current, rate of change of, 57 

 electromotive force and current, 52 



Henry, definition of, 356 



Heyland diagram of the induction motor, 

 2 7 8 



Hot-wire ammeter, the, 39 

 voltmeter, the, 39 



Hunting of synchronous motor, 150 



Impedance as an algebraic operator, 89 

 of an alternating-current circuit, def- 

 inition of, 69 



Inclined coil ammeters and voltmeters, 43 

 Inductance and capacity, 354 

 calculation of, 360 

 measurement of, 357 

 mechanical analogue of, 356 

 of a coil, 356 



on an iron core, 361 

 of a long solenoid, 361 

 of a transmission line, 362 

 units of, 356 



Induction generator, the, 271 

 motor, action of, 254, 371 



algebraic formation of, 288 

 analogy to the friction clutch, 26? 

 as a frequency changer, 269 

 as a generator, 271 

 break-down of, 262 

 circle-diagram of, 278 

 electrical power developed in 



rotor of, 265 

 energy transformations in the 



rotor of, 276 



equivalent transformer action of, 

 277 



