INDEX 273 



PAGE 



Factor, breadth factor 65 



leakage, calculation of 108 



leakage, definition of 107 



slot factor 69 



space factor in iron 41 



winding pitch factor 71 



Faraday's law of induction 57 



Fictitious poles as assumed in synchronous machines 151 



Field frames, m.m.f. for 106 



Field, magnetic (See also Magnetic field) 1 



m.m.f. at no load. See Saturation curves. 



m.m.f. in loaded D.C. machine 170 



loaded synchronous machines 148, 156 



FiHd ix)le leakage, calculation of 110 



effect of 108 



effect of load upon 113 



effect of saturation upon 112 



Field poles, m.m.f. for 107 



Figure of loss 47 



Fleming's rule 59 



Flux. See also Leakage flux. 



air-gap, nature of its distribution 88 



density, definition of 14 



in teeth, apparent 101 



description of 5 



distribution of, in a concentric cable 189 



in a loaded D.C. machine 1W 



in a loaded synchronous machine 139 



distortion. See Reaction. 



fringing, definition of . . . 88 



l>ormeance of 93 



gliding or revolving 1 Y> 



leakage, definition of Hi 



in induction machine, description of 221 



in revolving machinery, nature of s '> 



refraction 1 I'.i 



units of i. 



line* of magnetic . 2 

 mechanical, in magnetic field, avenge tractive effort in D.C. 



electromagnets . . 



i he actual force 251 



lateral compre-.o.. -ju 



longitudinal tension 242 



of A.C. magnet* 254 

 of a lifting magnet 

 of a tractive magnet. . 



aturo. . L' I* 



