電機機械 - 考試
By Lydia
at 2014-12-10T22:24
at 2014-12-10T22:24
Table of Contents
1. 出自於97年地特四等考題
題目是「直流電機」,不再贅述,單純題目上的名詞有點問題
最後要求「電樞電壓」
請問電樞電壓是指電樞電阻的壓降(IaRa)還是指內電壓(Ea)呢?
因為就名詞上似乎是求前者(IaRa)
但是寫李進雲四合一發現他這題是解出Ea
2.題目如右 http://ppt.cc/0v2l
這題我也朝轉差率s跟轉子電阻成正比下去解
求出Tmax之轉差率s=0.2083333
我的解法 http://ppt.cc/cWre
李進雲的解法 http://ppt.cc/VMIS 紅字部分為疑惑地方
雖然看似只是簡單的數學題,但是我是哪裡比錯了嗎= =?
麻煩高手們解惑,感謝!!!!!!!!
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