题目内容
一台理想变压器原、副线圈匝数比为
,当原线圈两端输入
的交变电压时,下列说法正确的是
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607036375.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607130972.png)
A.副线圈两端电压为![]() |
B.副线圈接一![]() ![]() |
C.变压器铁芯中磁通量变化率的最大值是![]() |
D.副线圈接一![]() ![]() |
D
原线圈两端电压为
,由原、副线圈匝数比可知副线圈两端电压为
,故
错;副线圈接一
电阻时,副线圈电流为
,原线圈中的电流为
,故
错;由于不知道线圈的具体匝数故变压器铁芯中磁通量变化率无法求出,故
错
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607613477.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607645404.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607723300.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607411411.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607442332.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130607988490.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130608019309.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824130608050313.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
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