题目内容
如图所示,L1和L2是输电线,甲是电压互感器,乙是电流互感器。若已知甲的变压比为500:1,乙的变流比为200:l,并且已知加在电压表两端的电压为220V,通过电流表的电流为5A,则输电线的输送功率为( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250053234634675.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250053234634675.jpg)
A.1.1×102W | B.1.1×104W | C.1.1×l06W | D.1.1×108W |
D
试题分析:已知变压比为500:1,电压表示数为220V,故传输电压为:
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005323479915.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825005323494696.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250053235101092.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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