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DFCCIL EE/EC Signals & Systems QUIZ - 1

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Question 1

Which of the following discrete time signal is not periodic?

Question 2

For the signal x(t) = –t for –1 ≤ t ≤ 0 and zero otherwise, then the signal y(t) = –x(–t – 2) in the interval –1 < t < –2 has

Question 3

Consider a discrete time signal as follows:

If y[n] = x[n] + x[–n], then energy of the signal y[n] will be

Question 4

The impulse response of four CT systems S1, S2, S3 and S4 are given respectively as

h1(t) = δ(t)

h4(t) = cos(100t) u(t)

Which of these system is not BIBO stable

Question 5

Which of the following condition holds good for a Energy signal?

Question 6

The input output relation of a system is y(n) = {2}x(n) x(n), then the system is
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