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【題組】(二)計算此電動機之電樞電壓 Ea、電樞電流 Ia、及輸出轉矩 τ。(15 分)
問題詳情
【題組】(二)計算此電動機之電樞電壓 Ea、電樞電流 Ia、及輸出轉矩 τ。(15 分)
參考答案
答案:A
難度:
計算中
-1
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三、額定 30 kW、120 V 之他激式直流發電機,電樞電阻Ra= 0.04 Ω,當激磁電流 If = 1.5 A,轉速為 2400 rpm 時,此發電機的開路電壓為120V。若將此電機當作直流電動
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四、一部三相、2300 V、60 Hz、12 極、Y 接之同步電動機,每相同步電抗為4.5 Ω,此電動機接至 2300 V 之無窮母線,汲取250 A功率因數0.8落後之電流,忽略電樞電阻及機械損失。
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