Signals and Systems 1
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Signals and Systems 1
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25 Questions

1. What are the tools used in a graphical method of finding convolution of discrete time signals?
2. If we reverse the directions of all branch transmittances and interchange the input and output in the flow graph, then the resulting structure is called as ______________
3. What is the associative property of discrete time convolution?
4. Is y[n] = n*sin(n*pi/4)u[-n] a stable system?
5. Choose the correct equation for finding the output of a discrete time convolution?
6. What is the following expression equal to: h*(c*(b+d(t))), d(t) is the delta function
7. What is the convolution of a signal with an impulse?
8. What is the rule (h*x)*c = h*(x*c) called?
9. Weighted superposition of time-shifted impulse responses is termed as _______ for discrete-time signals.
10. What is the rule h*x = x*h called?
11. Choose the properties which are followed by a discrete time convolution?
12. What is a convolution sum?
13. If two LTI systems with impulse response h1 (t) and h2 (t) and are connected in parallel then output is given by ______
14. Is discrete time convolution possible?
15. What are the nodes that replace the adders in the signal flow graphs?
16. For an LTI discrete system to be stable, the square sum of the impulse response should be
17. What is this property of impulse response is called ___________h1(t) * h2(t) = h2(t) * h1(t)
18. Is y[n] = n*cos(n*pi/4)u[n] a stable system?
19. What is the rule h*(x+y) = (y+x)*h called?
20. If M and N are the orders of numerator and denominator of rational system function respectively, then how many memory locations are required in direct form-II realization of that IIR filter?
21. What is the following expression equal to: h*(d+bd), d(t) is the delta function
22. The impulse response of discrete-time signal is given by h [n] = u [n+3]. Whether the system is causal or not?
23. What is the rule h*(x*c) = (x*h)*c called?
24. Does the system h(t) = exp([1-4j]t) correspond to a stable system?
25. For an LTI discrete system to be stable, the square sum of the impulse response should be

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