問題詳情
11.a已知交流電壓 v(t) = v1(t)+v2(t)，若 v1(t) = 10 sin( 377t+30o)V，v2(t) = 10 sin( 377t –30o)V，則 v(t)為何？
(A) v(t) = 20 sin( 377t)V
(B) v(t) = 17.3sin( 377t)V
(C) v(t) = 14.4sin( 377t)V
(D) v(t) = 10 sin( 377t)V
參考答案
答案：B
難度：適中0.545455
統計：A(3),B(6),C(1),D(0),E(0)