問題詳情
47.某水力發電廠發電機之發電頻率爲60赫芝，每分鐘轉速爲300轉，則此發電機之極數爲：
(A)4
(B)6
(C)12
(D)24
(A)4
(B)6
(C)12
(D)24
參考答案
答案：D
難度：適中0.409836
統計：A(9),B(15),C(48),D(50),E(0)
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