题目内容
远距离输电中,发电厂输送的电功率相同,如果分别采用输电电压为U1=11kV输电和输电电压为U2=110kV输电。则两种情况中,输电线上损耗功率之比P1∶P2等于( )
A.1∶100 | B.10∶1 | C.1∶10 | D.100∶1 |
D
试题分析:输送的电功率不变,根据
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162233153465.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162233309325.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162233512575.png)
故选D.
点评:解决本题的关键掌握输送功率
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162233153465.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824162233512575.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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题目内容
A.1∶100 | B.10∶1 | C.1∶10 | D.100∶1 |