基本電學 虛功率+-問題 - 考試
By Olga
at 2013-04-08T18:23
at 2013-04-08T18:23
Table of Contents
http://ppt.cc/tfY~
http://ppt.cc/lkM~
請問一下交流電路不管是串並聯~
他的虛功率呈現:
電感性:Q功率標示"-"號
電容性:Q功率標示"+"號
電阻性:Q=0
這樣理解是正確的嗎~因為我看程金的書
書本裡有些Q有標示+-號有一些又沒有~
不曉得是漏標還是怎麼樣,想請知道人,
可以指點一下嗎?
像這題流過電容電桿的電流都是10(A)
電感為8歐姆~電容為6歐姆
計算方式卻是10^2*8-10^2*6=200VAR
因該是10^2*6-10^2*8=-200VAR才對
不是嗎Q=(Qc-Ql)
--
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