| OCR Text |
Show . (11) D/ R: (W, or K, or (K, or 'K,WI 'i',+'lrz • w - ) =K u/, Ri W, • 27TH, 27TH, X, to caused by the weaker 1s made very small to the = we get: (Hi + hR) 2 + K/ W (RR+ ) 2 K N2w KNRt», + c 8 7T W and -the to the onp ar'ed 'llhi permanent magnet. neglected revolving fields of the two tively weak fields. is s by having done So the term 2 (H;+ h2) K,W hH sin (0, =Ki hH sin (0, 2 - ) .K 0e) - fluxes voltage a1 to the W :Ko may be 87Th[ K, • KI of V C K (cfJ, B) 0 (. t '!lhus - of the (= t and H the line. sin sine Now h of the line current rela NeW where and the difference between them. to the due equation becomes: Ni K, alternating (R,) retarding torcpe 'lIhue the spe(ld is proportional to the product two N2 LV K is the frecpency N, 9J) - + NR U) R", x IA) Now for the wa.ttmeter the retarding t.orque -N-. and • where (0/ h H sin and RI of - r R()+ K (Roi's + Ie I U) sin(¢, cPR)] h H N'W K, R, W,+K, R/ = the values since WI have 4K II K -+ R ) W 2 R, ) - ing [ -4 Now, we K, Re - (R't. and insert I I R e K R (w,+ w) , 0 we N" . of the angle of phase j. e proport i onal A) is proportionhave 'fJ2) But the true power of' the circuit is P = V <t: C',OS cP cos wherylJ> i the power factor. 'lll1us, for the speed to be |
