![](https://static.youtibao.com/asksite/comm/h5/images/m_q_title.png)
[单选题]
现将一输入为220V、输出为6V的变压器,改绕成输入为220V时输出为30V的变压器,如已知原来的次级线圈为36匝,而改绕时初级线圈的匝数不变,则次级线圈应增绕()
A.144匝
B.264匝
C.180匝
D.1320匝
![](https://static.youtibao.com/asksite/comm/h5/images/m_q_a.png)
A、144匝
![](https://static.youtibao.com/asksite/comm/h5/images/solist_ts.png)
A.144匝
B.264匝
C.180匝
D.1320匝
A、144匝
A.120
B.130
C.150
D.180
A.R1=5V,R2=6V
B.R1=100V,R2=120V
C.R1=120V,R2=100V
D.R1=6V,R2=5V
A.输出36V直流电压
B.输出6V直流电压但一次绕组因严重过热而烧毁
C.无电压输出
D.无电压输出一次绕组因严重过热而烧毁
A.原线圈所加电压为110V
B.原线圈通过的电流为0.05A
C.输入的电功率是11W
D.副线圈通过的电流约为0.55A