Electronics and Communication Engineering - Signals and Systems - Discussion
Discussion Forum : Signals and Systems - Section 1 (Q.No. 1)
1.
What about the stability of system in 
Answer: Option
Explanation:
ROC include the unit circle hence it is stable.
Discussion:
49 comments Page 2 of 5.
Khalique said:
10 years ago
How one can know the stability when ROC is unknown? In above question ROC can be inward, outward or. 4<|z|<2.
Rams said:
10 years ago
It depends on ROC we can't say anything about stability.
Soumya said:
10 years ago
Since the pole z=2 is outside the unit circle so it is unstable. II think the answer is wrong it cannot be stable.
Munir Hussain said:
10 years ago
System is unstable as ROC doesn't encircle unit circle.
Swapna said:
10 years ago
I can't understand please explain that clearly.
Aman said:
9 years ago
For stability we check mod of z which IC greater than 2 and 0.4. Hence we use upper limit that is z=2 which is outside uni circle, so system unstable.
Abhishek sharma said:
9 years ago
Either question is incomplete or its a wrong answer. Please refer some standards texts before putting it up.
Bhuwan joshi said:
9 years ago
Either they should give ROC.
4<z<2 for stability otherwise system will be unstable.
4<z<2 for stability otherwise system will be unstable.
LD Nagar said:
9 years ago
The ROC is not given. So we can not say this signal is RHS or LHS. So this system is unstable.
Vikas said:
9 years ago
The condition of stable system is that the pole of a transfer function must be lie in the left half of s plane. So the system is unstable.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers