无源两端网络由两原件RX串联构成,端电压U=220倍根号2sin(314t+43°)V,端电流为I=5.5倍根号2（sin314t_物理解答

无源两端网络由两原件RX串联构成,端电压U=220倍根号2sin(314t+43°)V,端电流为I=5.5倍根号2（sin314t-10°）A,求等效参数R X并求cosy,以及功率P,Q

人气：115 ℃　时间：2020-06-24 20:01:53

解答

阻抗 Z = U / I = 220 / 5.5 = 40 欧相位差 y = 43 - (- 10) = 53 度 cosy = cos53 = 0.6R = cosy * Z = 24 欧X = cosy * Z = 32 欧P = I * I * R = 5.5 * 5.5 * 24 = 726 WQ = I * I * X = 5.5 * 5.5 * 32 = 968 v...