第一章 单元测试

1、 问题:The period of is ( )。
选项:
A:
B:
C:
D:
答案: 【


2、 问题:The period of is ( )。
选项:
A:30
B:3
C:10
D:15
答案: 【
30

3、 问题: and are the input and output signals of the system respectively, and only ( ) below is a causal LTI system.
选项:
A:
B:
C:
D:
答案: 【

4、 问题: ( )。
选项:
A:
B:
C:
D:
答案: 【

5、 问题: ( )。
选项:
A:
B:
C:
D:
答案: 【

6、 问题:A memoryless system must not be a causal system.( )
选项:
A:对
B:错
答案: 【

7、 问题:A cascade of two LTI systems is also a LTI system.( )
选项:
A:对
B:错
答案: 【

8、 问题:A cascade of two nonlinear systems is still a nonlinear system.( )
选项:
A:对
B:错
答案: 【

9、 问题: time shifts to become , and when , is to the left of .( )
选项:
A:对
B:错
答案: 【

10、 问题:The product of two odd signals or two even signals is an even signal.( )
选项:
A:对
B:错
答案: 【

11、 问题:The product of an odd signal and an even signal is an even signal.( )
选项:
A:对
B:错
答案: 【

12、 问题:The unit impulse response of a delay with a time delay ​ for a CT signal is , the unit impulse response of an integrator is , and the unit impulse response of a differentiator is .( )
选项:
A:对
B:错
答案: 【

第二章 单元测试

1、 问题:The impulse response of a CT linear causal system must satisfy condition ( )。
选项:
A:
B:
C:
D:
答案: 【

2、 问题:Given , ( )。
选项:
A:
B:
C:
D:
答案: 【

3、 问题:For a CT LTI system, if the input-output relationship is given by , then the system’s unit impulse response is ( ).
选项:
A:
B:
C:
D:
答案: 【

4、 问题:Given , then 。( )
选项:
A:对
B:错
答案: 【

5、 问题:Given , then 。( )
选项:
A:对
B:错
答案: 【

6、 问题:Given , and , , then , 。( )
选项:
A:对
B:错
答案: 【

7、 问题:Given , and , , then , 。( )
选项:
A:对
B:错
答案: 【

8、 问题:Given a system with input-output relationship as , and , the system is time-invariant.( )
选项:
A:对
B:错
答案: 【

9、 问题:

Given a system with input-output relationship as , the system is non-linear.( )

选项:
A:对
B:错
答案: 【

10、 问题:Given a system with unit impulse response as , the system is a stable LTI system.( )
选项:
A:对
B:错
答案: 【

11、 问题:Given a system with unit impulse response as , the system is a stable LTI system.( )
选项:
A:对
B:错
答案: 【

第三章 单元测试

1、 问题:

Given that is a function with a period , then the Fourier series of 

选项:
A:正弦分量
B:余弦分量
C:奇次谐波分量
D:偶次谐波分量
答案: 【
奇次谐波分量

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