申論題內容
六、設有一 60 Hz、440 V 六極(six pole)三相(three phase)之感應電機,具有下列等 效電路參數:Rs = 0.8 Ω(stator resistance per phase)、Xs = 0.7 Ω(stator reactance per phase)、RR = 0.3 Ω(rotor resistance per phase)、XR = 0.7 Ω(rotor reactance per phase)、Xm = 35 Ω(mutual reactance),試求此感應電機在 1200 rpm 轉速下之功 率因數(power factor)。(10 分)