... a 10 % decrease, 2 11 , 907 VAE = , and 11 1 222 13 , 230 Vsin sin sin sin 27.9 31 . 3 11 ,907 VAAEEδδ−− == °=° Therefore, the new armature current is 2 11 , 907 31 . 3 ... kW 419 kWPPP=+= + = TOT 1 2 14 5 kVAR 11 5 kVAR 260 kVARQQQ=+= + = The overall power factor is 14 0 ()()()()7 217 0 0. 018 7 4 619 36 .87 A 1. 716 4 619 36 .87 AAj=∠°+ Ω ∠− °+ Ω ∠− °E 13 ,590 ... Open-circuit test Field current, A 32 0 36 5 38 0 475 570 Line voltage, kV 13 .0 13 .8 14 .1 15.2 16 .0 Extrapolated air-gap voltage, kV 15 .4 17 .5 18 .3 22.8 27.4 The short-circuit test was...