电路分析(山东联盟-滨州学院) 2021智慧树满分答案
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第一章 单元测试
1、单选题:
一段有源支路如题图所示,E=5V,R=10Ω,I=1A,则电压U为( )V。
A:
15
B:
5
C:
-5
D:
10
答案:
5
2、单选题:
电路中参考点改变后,电路中任意两点间的电压( )。
A:
增大
B:
减小
C:
增大或减小
D:
不变
答案:
不变
3、单选题:
如图所示电路,电流I为( )A。
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alt="电路分析(山东联盟-滨州学院) 2021智慧树满分答案" class="aligncenter">
A:
6
B:
4
C:
2
D:
5
答案:
4
4、单选题:
如图所示电路中电压U等于( )
A:
6
B:
–6
C:
3
D:
–3
答案:
–6
5、单选题:
设电压、电流正向关联,U=3V,I=-2A,则P= ,该元件实际 功率。
A: -6,吸收
B: -6,发出
C: 6,吸收
D: 6,发出
答案: -6,发出
第二章 单元测试
1、单选题:
图示电路中5V电压源发出的功率P等于( )。
A: 15
B:-15
C: 30
D: -30
答案: 15
2、单选题:
图示电路中电流i等于 A。
A: 1
B: -1
C: 7
D: 3
答案: -1
3、单选题:
理想电压源和理想电流源并联,其对外等效电路为 。理想电流源和电阻串联,其对外等效电路为 。
A: 理想电压源,理想电压源
B: 理想电流源,理想电压源
C: 理想电压源,理想电流源
D: 理想电流源,理想电流源
答案: 理想电压源,理想电流源
4、单选题:
和
均为含源线性电阻网络,在图示电路中3Ω电阻的端电压U应为( )。
A: -6V
B: 2V
C:-2V
D: 6V
答案: 2V
5、单选题:
图示电路中,若:(1)电阻R=1Ω,等效电阻Rab= Ω;(2)电阻R=2Ω。,等效电阻Rab = Ω。
A: 5,5
B:5,2.5
C: 2.5,5
D: 2.5,2.5
答案: 2.5,2.5
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