Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 1 (Q.No. 1)
What about the stability of system in
system is stable
stable at 0.4
cant say
Answer: Option

ROC include the unit circle hence it is stable.

49 comments Page 1 of 5.

Abdul Wahab said:   2 months ago
The System is unstable,

Since, the pole at z = 0.4 lies inside the unit circle and the other pole at z = 2 lies outside the unit circle.

For a system to be stable, all the poles must be inside the unit circle in the z-plane.

Therefore, the system is unstable.

Usama said:   3 years ago
H(z) is actually z transform. Now finding the ROC:
The roots are 0.2, 2.
which makes a circle that encloses the unit circle, so the system is stable.

Tushar said:   4 years ago
According to me, it is Unstable.

Chethan said:   7 years ago
No, it is unstable.

Nisha said:   7 years ago
The system is unstable. ROC doesn't include unit circle.

Rutuja said:   7 years ago
No, the system is unstable.

Vijay said:   7 years ago
Mix causal and anti-causal signal than it is stable.

Saritha said:   7 years ago
Poles are the right side of the circle. So it is stable.

Zahoor said:   7 years ago
Since one pole magnitude lies outside the unit circle so system is unstable.

Sridevi said:   7 years ago
Please give the explanation of the answer clearly.

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