题目内容
如图4所示,一理想变压器,当原线圈两端接U1=220V的正弦式交变电压时,副线圈两端的电压U2=55V.对于该变压器,下列说法正确的是( )
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241331330933820.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241331330933820.png)
A.原、副线圈的匝数之比等于4:1 |
B.原、副线圈的匝数之比等于1:4 |
C.原、副线圈的匝数之比等于2:1 |
D.原、副线圈的匝数之比等于1:2 |
A
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824133133140636.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目