97高考2 電機機械 凸極式電動機 - 高考
By Necoo
at 2018-11-02T11:29
at 2018-11-02T11:29
Table of Contents
在解此題時,遇到觀念問題,希望高手解惑謝謝
題目:
https://i.imgur.com/exqHtAY.png
求最大輸出功率
解法:
https://i.imgur.com/eeZLDDg.jpg
問題:當Ea為0時,則輸出功率為Ea*Ia
為什麼輸出功率不是0?
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高考
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