INDEX 



Absorption of light, 418 

 Addition, of currents, 16 



by use of vectors, !'. 

 of vectors, 12 

 Adjustments of induction watthour 



meter, 67 



A. I. K. K. method of determining 

 alternator regulation, 159 

 Air-break switches, 408 

 Air-cooled transformer, 202 

 Air-gap of induction motors, 258 

 Alternating-current. 1 



ampere, definition of, 8 

 circuits, 25 

 capacitance alone, 29 

 inductance alone, 26 

 natural frequency, 39 

 parallel resonance, 41 

 resistance, alone, 25 

 capacitance in series with, 34 

 inductance in series with, 



32 



inductance and capacitance 

 in parallel with, 40 

 in scries with, 36 

 series resonance, 38 

 vector diagrams, 36, 40, 46, 48 

 instruments, 51 



electro-dynanometer type, 51 

 ammeter, 55 

 inclined coil. :, i 

 indicating 

 Siemens, 51 

 wattmeter, 55 

 hot -wire type, 63 



iron-vane ty|x, 61 

 ammetrrH, 63 

 voltmeters, 61 

 r, 22 



effect of phase relations on, 23 

 rotating field d 



Alternating-current, volt, definition 



of, 11 



watthour meter, 63 

 Alternation, 6 

 Alternator, 99 



armature, reactance of, 129 

 reaction of, 132 

 resistance of, 130 

 breadth factor of , Ul 

 construction, 111 



armature or stntor. Ill 

 rotat ing-field structure, 11.") 

 electromotive force, method of 

 determining regulation 

 of, irj 



vector diagram for, 146 

 wave, 124 



flux distribution, 123 

 generated electro orce, 



effect of breadth factor 



on, Ul 



of pitch factor on, 121 

 hunting, 171 

 leakage flux, 129 

 parallel operation of, 163 

 phasing windings of, 1. 

 pitch factor of, 122 

 rating, 126 

 ren< ;re. 129 



HMI. armature, 132 

 regulation, 1-JS, 1 II 



\ I icthod of deter- 



mining, 159 

 magnetomotive force method 



:img, 155 



vector diagram, 155, 157 

 synchronous impedance 

 method of determining, 



vector diagram, 146 

 resistance, armature, 130 

 rotating-field type, 09 



3.1 





