Signals and Systems 1
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Avg score: 21% • Most missed: “What is this property of impulse response is called ___________h1(t) * h2(t) = h…”
Signals and Systems 1
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25 Questions

1. Choose the correct equation for finding the output of a discrete time convolution?
2. If two LTI systems with impulse response h1 (t) and h2 (t) and are connected in parallel then output is given by ______
3. What is the rule (h*x)*c = h*(x*c) called?
4. How is discrete time convolution represented?
5. Is y[n] = n*sin(n*pi/4)u[-n] a stable system?
6. What is the following expression equal to: h*(d+bd), d(t) is the delta function
7. Does the system h(t) = exp([1-4j]t) correspond to a stable system?
8. The system transfer function and the input if exchanged will still give the same response.
9. The output signal of a system is extracted at a sink node.
10. What is the following expression equal to: h*(c*(b+d(t))), d(t) is the delta function
11. What is the rule (h*x)*c = h*(x*c) called?
12. What is a convolution sum?
13. The condition for memory-less system is given by _____
14. What is the convolution of a signal with an impulse?
15. Is discrete time convolution possible?
16. What is the rule h*x = x*h called?
17. What is the rule h*(x+y) = (y+x)*h called?
18. Find the convolution of x1[n] = {1, 2, 3, 4} and x2[n] = {2, 1, 2, 1}.
19. What is the rule c*(x*h) = (x*h)*c called?
20. The causal continuous system with impulse response should satisfy ____ equation.
21. When two LTI systems with impulse responses ha (t) and hb (t) are cascaded then equivalent response is given by ______
22. Causal systems are ______
23. Does the system h(t) = exp([-1-2j]t) correspond to a stable system?
24. Is y[n] = n*cos(n*pi/4)u[n] a stable system?
25. 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?

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