Electronics and Communication Engineering - Signals and Systems

1.
The discrete time system describes by y(n) = x(n2) is
casual, Linear, time varying
casual, non-linear, timevari
non-casual, Linear, time invariant
non-casual, non-linear, time variant
Answer: Option
Explanation:
No answer description is available. Let's discuss.

2.
If Laplace transform of f(t) is F(s), then £[tf(t)] =
Answer: Option
Explanation:
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3.
A system is stable if ROC
include the unit circle
exclude the unit circle
lies on Circle
entire plane
Answer: Option
Explanation:
No answer description is available. Let's discuss.

4.
The Laplace transform of a unit step function is
1
1 / s
s
1 / s2
Answer: Option
Explanation:
No answer description is available. Let's discuss.

5.
The minimum sampling frequency in sample/sec. required to reconstruct the following signal from its samples wuthout distortion
would be
2 x 103
4 x 103
6 x 103
8 x 103
Answer: Option
Explanation:
No answer description is available. Let's discuss.