电路如图所示，则电路的戴维宁等效电路为（ ）。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201904/038cccb53568406f82f040bae5085ee2.png

A . 正确 B . 错误

A . RI +U ；0 B . -RI +U ；R C . RI -U ；R D . RI +U ；R

A . 3V，1.2Ω B . 3V，1Ω C . 4V，14Ω D . 36V，1.2Ω

A . 9V，2Ω B . 3V，4Ω C . 3V，6Ω D . 9V，6Ω

A . （5／16）s B . （1／3）s C . 3s D . 2s

A . 6V，6Ω B . 6V，2Ω C . 12V，6Ω D . 12V，2Ω

A .https://assets.asklib.com/psource/2015110110421527799.jpg B .https://assets.asklib.com/psource/2015110110423676835.jpg C .https://assets.asklib.com/psource/2015110110430151547.jpg D .https://assets.asklib.com/psource/2015110110431468616.jpg

A .https://assets.asklib.com/psource/2015102715442257377.jpg B .https://assets.asklib.com/psource/2015102715442535355.jpg C .https://assets.asklib.com/psource/2015102715442726007.jpg D .https://assets.asklib.com/psource/2015102715443096508.jpg

A．N为线性纯电阻性有源二端网络，NL为无源线性二端网络 B．N为线性纯电阻的有源二端网络，NL为线性或非线性,有源或无源二端网络 C．N和N都是线性的纯电阻性有源二端网络 D．不需要条件

正弦交流电路如图所示，ωL₁=ωL₂=10Ω，ωM=5Ω，R₁=R₂=6Ω，<img src='https://img2.soutiyun.com/latex/latex.action' />。求ab端戴维南等效电路。 <img src='https://img2.soutiyun.com/ask/5499001-5502000/aff59642310f90114dbbfcbeb33286d3.jpg' />

如图12.4.3所示电路的戴维南等效电路参数u_oc=______，R_eq=______。 <img src='https://img2.soutiyun.com/ask/2020-01-13/947754393378863.png' />

<img src='https://img2.soutiyun.com/shangxueba/ask/3927001-3930000/3927823/ct_jggysbnjxj_jggysbnjxchoose_0398(106).jpg' /> A．1.5A B．0.8A C．1A D．1.2A

图示电路中，N为含源线性电阻网络，其端口伏安特性曲线如图(b)所示，其戴维南等效电路参数为()。 A．Uoc=-12V，R0=-3Ω B．Uoc=-12V，R0=3Ω C．Uoc=12V，R0=3Ω D．Uoc=12V，R0=-3Ω <img src='https://img2.soutiyun.com/ask/uploadfile/2766001-2769000/efeb2fb9e7ac950f1ab146ca4df3e402.jpg' />

A．<img src='https://img2.soutiyun.com/shangxueba/ask/18087001-18090000/18087885/2015102715442257377.jpg' /> B．<img src='https://img2.soutiyun.com/shangxueba/ask/18087001-18090000/18087885/2015102715442535355.jpg' /> C．<img src='https://img2.soutiyun.com/shangxueba/ask/18087001-18090000/18087885/2015102715442726007.jpg' /> D．<img src='https://img2.soutiyun.com/shangxueba/ask/18087001-18090000/18087885/2015102715443096508.jpg' />

<img src='https://img2.soutiyun.com/ask/2020-07-06/962894436190544.png' /><img src='https://img2.soutiyun.com/ask/2020-07-06/962894441876869.png' />

题图10-50所示单口网络工作于正弦稳态，已知us(t)=<img src='https://img2.soutiyun.com/ask/2020-07-07/96297017944186.png' />试求单口网络的戴维宁等效电路。 <img src='https://img2.soutiyun.com/ask/2020-07-07/962970193210647.png' /><img src='https://img2.soutiyun.com/ask/2020-07-07/962970201021094.png' /><img src='https://img2.soutiyun.com/ask/2020-07-07/962970211392687.png' />

<img src='https://img2.soutiyun.com/shangxueba/ask/50796001-50799000/50796740/967040986097027.png' />

求题9-17图所示电路的零状态响应i(t).要求对此电路的复频域模型用戴维宁定理求出i(t)的象函数I(s),进而求出i(t). <img src='https://img2.soutiyun.com/ask/2020-10-10/971200769947351.jpg' />

<img src='https://img2.soutiyun.com/shangxueba/ask/18363001-18366000/18363314/2015110109503376391.jpg' /> A．6V，6Ω B． 6V，2Ω C． 12V，6Ω D． 12V，2Ω