题目内容
用220V的正弦交流电通过理想变压器对一负载供电,变压器输出电压是110V,通过负载的电流图象如图所示,则
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250029305073254.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250029305073254.jpg)
A.交流电的频率是0.02s |
B.输出电压的最大值是110V |
C.变压器原、副线圈的匝数比是1∶2 |
D.负载电流的函数表达式![]() |
D
试题分析:根据负载的电流图像可判断周期
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002930538519.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002930554731.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002930569503.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/20140825002930585653.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140825/201408250029306011971.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
练习册系列答案
相关题目
题目内容
A.交流电的频率是0.02s |
B.输出电压的最大值是110V |
C.变压器原、副线圈的匝数比是1∶2 |
D.负载电流的函数表达式![]() |