基本電學 問題 - 考試

By Catherine
at 2013-11-05T17:10
at 2013-11-05T17:10
Table of Contents
[考題] 國考歷屆考題與考題觀念討論(書裡看到的選這個)請附上想法、出處
問題:一電壓源v(t)=-3+4√2sin5t,其平均值電壓與有效值電壓比約為何?
想法:這題答案平均值是-3、有效值是5,不過題目並無說明這是弦波、方波還是其他的
波形,不知如何下手@@?,請高手解答,謝謝!
--
問題:一電壓源v(t)=-3+4√2sin5t,其平均值電壓與有效值電壓比約為何?
想法:這題答案平均值是-3、有效值是5,不過題目並無說明這是弦波、方波還是其他的
波形,不知如何下手@@?,請高手解答,謝謝!
--
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考試
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