問題詳情
37.某一放大器其頻帶寬為 20KHz,若加上負回授使其雜訊衰減了 10 倍,則此放大器的頻寬變為多少?
(A)40KHz
(B)100KHz
(C)120KHz
(D)200KHz。
(A)40KHz
(B)100KHz
(C)120KHz
(D)200KHz。
參考答案
答案:D
難度:簡單0.733333
統計:A(1),B(0),C(2),D(11),E(0)
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