The system described by the transfer function T(s) = s-3/(^2+2s+3)2 is A) margin

Question

The system described by the transfer function T(s) = s-3/(^2+2s+3)2 is A) marginally stable B) stable and BIBO stable C) stable but not BIBO stable E) none of the above D) unstable What is the cdntroller/compensator that without affecting transient response can be used to achieve zero steady-state error (4) A) PI B) PD C) Lag D)Lead E) PID F) Lead-Lag A system with the characteristic equationi s^3 + 10s^2 + 31s + 30 + K = 0 is A) stable for K > 0 B) unstable for K > 0 (5) C) stable for 0 180

Explanation / Answer

A) As poles of the function are -1,-1,-2,-2. All are negative, Hence system is BIBO stable.

B) PI controller

C) Any system is stable if K >0 in its characterstic equation. option A

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