A、A.176Var
B、B.0Var
C、C.154Var
D、D.440Var
更多“把L＝1H的纯电感接到<img src="https://img.ppkao.com/2018-08/tianmin/2018082809510046174.jpg" />的电源上，求其无功功率为（）。<p> 把L＝1H的纯电感接到<img src="https://img.ppkao.com/2018-08/tianmin/2018082809510046174.jpg" />的电源上，求其无功功率为（）。</p>”相关的问题
A、<img src="https://nimg.ppkao.com/2018-09/lina/2018090209315934533.jpg?sign=786559a38e96ae39151906202c80c2b6&t=62d02983" /> B、<img src="https://nimg.ppkao.com/2018-09/lina/2018090209320474744.jpg?sign=3c1c05c639ea4b77939dd62d6462d84b&t=62d02983" /> C、<img src="https://nimg.ppkao.com/2018-09/lina/2018090209320819092.jpg?sign=bb07ef3b33d23ce7ac721258f175a649&t=62d02983" /> D、<img src="https://nimg.ppkao.com/2018-09/lina/2018090209321367846.jpg?sign=81a38cd835f1ffaa8f0edf8d4e444ad1&t=62d02983" />
A、已知工频正弦交流电压u=220<img src="https://img.ppkao.com/2018-10/panyingqiu/2018101710145479526.png" />sin314t（V）加在L=159mH的理想电感线圈上，求通过线圈的电流瞬时值函数式，并绘出该电路的电压与电流相量图。
A、在电阻、电感、电容元件相串联的电路中，已知R=30Ω，L=127mH，C=40μF，电源电压<img src="https://img.ppkao.com/2018-08/lina/2018082009063949857.jpg" />。
A、A.<img src="https://img.ppkao.com/2018-08/longzhengxuan/2018082216301263809.jpg" />
B.<img src="https://img.ppkao.com/2018-08/longzhengxuan/2018082216301513758.jpg" />
C.<img src="https://img.ppkao.com/2018-08/longzhengxuan/201808221630286940.jpg" />
D.<img src="https://img.ppkao.com/2018-08/longzhengxuan/2018082216303362301.jpg" />
A、A.<img src="https://img.ppkao.com/2019-04/xiaotian/2019042408460657338.jpg" />
B.<img src="https://img.ppkao.com/2019-04/xiaotian/2019042408461052210.jpg" />
C.<img src="https://img.ppkao.com/2019-04/xiaotian/2019042408461490088.jpg" />
D.<img src="https://img.ppkao.com/2019-04/xiaotian/201904240846189874.jpg" />
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