题目内容
如图所示,理想变压器原线圈中正弦式交变电源的输出电压和电流分别为
和
,两个副线圈的输出电压和电流分别为
和
、
和
.接在原副线圈中的五个完全相同的灯泡均正常发光。则下列表述正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241241036465413.png)
A
∶
∶
=1∶2∶1
B
∶
∶
=1∶1∶2
C 三个线圈匝数
之比为5∶2∶1
D 电源电压
与原线圈两端电压
之比为5∶4
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103318347.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103396296.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103443323.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103615328.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241241036465413.png)
A
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103396296.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103443323.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103615328.png)
B
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103318347.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
C 三个线圈匝数
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103958523.png)
D 电源电压
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103318347.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104036366.png)
D
解:5个完全相同的灯泡均能正常发光,设额定电压为U,额定电流为I,
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103396296.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103443323.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103615328.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103396296.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103443323.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103615328.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104223359.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104239360.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104348329.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103396296.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104223359.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103443323.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104239360.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103615328.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104348329.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104223359.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104239360.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104036366.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104348329.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104223359.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104239360.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103318347.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104036366.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103318347.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103412377.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124103599384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824124104036366.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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