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. What is the rule h*(x+y) = (y+x)*h called?
2. Is y[n] = n*sin(n*pi/4)u[-n] a causal system?
3. What is the rule h*x = x*h called?
4. What is the rule h*(x*c) = (x*h)*c called?
5. Does the system h(t) = exp([-1-2j]t) correspond to a stable system?
6. What is the commutative property?
7. The output signal of a system is extracted at a sink node.
8. The basic elements of a flow graph are branches and nodes.
9. The system transfer function and the input if exchanged will still give the same response.
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. Causal systems are ______
13. What is the rule c*(x*h) = (x*h)*c called?
14. Does the system h(t) = exp([1-4j]t) correspond to a stable system?
15. For an LTI discrete system to be stable, the square sum of the impulse response should be
16. What are the nodes that replace the adders in the signal flow graphs?
17. Choose the correct equation for finding the output of a discrete time convolution?
18. What is the convolution of a signal with an impulse?
19. Weighted superposition of time-shifted impulse responses is termed as _______ for discrete-time signals.
20. If two LTI systems with impulse response h1 (t) and h2 (t) and are connected in parallel then output is given by ______
21. What is the following expression equal to: h*(d+bd), d(t) is the delta function
22. In direct form-I realization, all-pole system is placed before the all-zero system.
23. The condition for memory-less system is given by _____
24. The system transfer function and the input if exchanged will still give the same response.
25. Impulse response is the output of ______ system due to impulse input applied at time=0?

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