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43.人們利用變壓器將電壓升高或降低,變壓器的應用使得發電廠不須設在住家附近。下列有關變壓器的敘述,哪幾項正確? (A)變壓器的環形鐵心是永久磁鐵 (B)變壓器能變壓,與電流的磁效應有關 (C)變壓器
問題詳情
43.人們利用變壓器將電壓升高或降低,變壓器的應用使得發電廠不須設在住家附近。下列有關變壓器的敘述,哪幾項正確?
(A)變壓器的環形鐵心是永久磁鐵
(B)變壓器能變壓,與電流的磁效應有關
(C)變壓器能變壓,與電流的熱效應有關
(D)變壓器能變壓,與磁場改變時會產生感應電動勢有關
(E)變壓器可使兩電力系統不須直接連結,就可以作電能的轉移
參考答案
答案:[無官方正解]
難度:非常困難0
統計:A(0),B(0),C(0),D(0),E(0)
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