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8.有一正弦波電屋,頻率為50Hz,當時·達到最小值-10V,則此電壓方程式為何?
問題詳情
8.有一正弦波電屋,頻率為50Hz,當
時·達到最小值-10V,則此電壓方程式為何?
參考答案
答案:B
統計:A:0,B:0,C:0,D:0,E:0
難度:計算中
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9. (5%) Consider the system of linear equations:x +2y +4z =8x+y+3z=-2x-3y-z=0Which of the following
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9. 某一交流系统,電壓為100sin100t負載消耗的平均功率為3KW,功率因數為0.6(滯後),若要提高系統的 功率因數至1.0,則需並聯多少容量的電容器? (A)8000μF (B)4000μF
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