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44.有一步進電動機,轉速為 300rpm,每秒共有 2000 步,試求步進角為幾度?(A) 7.2° (B) 3.6° (C) 1.8° (D) 0.9°
問題詳情
44.有一步進電動機,轉速為 300rpm,每秒共有 2000 步,試求步進角為幾度?
(A) 7.2°
(B) 3.6°
(C) 1.8°
(D) 0.9°
參考答案
上一篇 :
47.某三相 4 極感應電動機,採用直接啟動時啟動電流(IS)為 120A,啟動轉矩(TS)為 30 牛頓-公尺。若改為 Y–Δ 降壓啟動,則啟動電流(IS)與啟動轉矩(TS)分別為何?(A) IS
下一篇 :
45.有一三相感應電動機,在某一負載時其轉差率為 0.04,若將轉部電阻增加為 3 倍而轉矩保持不變,則轉差率應變為多少?(A) 0.12 (B) 0.06 (C) 0.03 (D) 0.015
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