2020 电工电子学(Electric and Electronics)(江苏大学) 最新满分章节测试答案

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本课程起止时间为:2020-03-01到2020-03-01
本篇答案更新状态:已完结

1. Basic concepts and basic laws in circuit Test for chapter 1

1、 问题:the reference directions and results are as shown in the circuit. someone changes the reference direction of current to opposite one , then what are the results for voltage and current.
选项：
A:Vb=12V, ib=-1A
B:Vb=-12V, ib=1A
C:Vb=12V, ib=1A
D:Vb=-12V, ib=-1A
答案: 【Vb=12V, ib=-1A】

2、 问题:Calculate the power for element B shown in circuit as figure1, and determine it is source or sink.
选项：
A:-12W, source
B:12W, source
C:-12W, sink
D:12W, sink
答案: 【-12W, source】

3、 问题:The equivalent resistance of the circuit in Figure is（ ）
选项：
A:R1//(R2+R4//R3）
B:R1//R2+R4//R3
C:R1+R2+R4//R3
D:R1+R2+R3+R4
答案: 【R1//(R2+R4//R3）】

4、 问题:as the figure, The relation between the current I1 and I2 is ( )
选项：
A:I1+ I2 =1
B:I1+1 =I2
C:I1=I2 +1
D:I1+I2 =-1
答案: 【I1+1 =I2 】

5、 问题:As shown in figure, which expression is not correct
选项：
A:va=vb
B:va=vc
C:vb=-vc
D:va=-vc
答案: 【va=vc】

6、 问题:Find the current i as shown in the circuit.
答案: 【2A】

7、 问题:Find R in the circuit if v2 =8V.
答案: 【6Ω】

8、 问题:Find the current I shown in circuit.
答案: 【1.4A】

9、 问题:The resistances are given, also a current as shown figure, Use Ohm’s law, KVL and KCL to find the voltage source Vx.
答案: 【15V】

10、 问题:Find the current i1 and i2 in the circuit.
答案: 【i1=4A，i2=1A】

2 techniques of circuit analysis Test for chapter 2

1、 问题:1．In the circuit shown in Figure, the current IS is______
选项：
A:1.5A
B:-1.5A
C:3A；
D:－3A
答案: 【－3A】

2、 问题:In the circuit shown in Figure, the current I is______
选项：
A:2A
B:－2A
C:3A
D:－3A
答案: 【－2A】