1
GATE ECE 2001
Subjective
+5
-0
Consider the feedback control system shown in figure.
(a) Find the transfer function of the system and its characteristic equation.

(b) Use the Routh-Hurwitz criterion to determine the range of 'K' for which the system is stable.

2
GATE ECE 1999
Subjective
+5
-0
The loop transfer function of a feedback control system is given by $$G\left(s\right)H\left(s\right)=\frac{K\left(s+1\right)}{s\left(1+Ts\right)\left(1+2s\right)},\;K>0$$$Using Routh-Hurwitz criterion, determine the region of K-T plane in which the closed-loop system is stable. 3 GATE ECE 1998 Subjective +5 -0 The characteristic equation of a feedback control system is $$s^4+20s^3+15s^2+2s+K\;=\;0$$$
(i) Determine the range of K for the system to be stable.
(ii) Can the system be marginally stable? If so, find the required value of K and the frequency of sustained oscillation.
4
GATE ECE 1996
Subjective
+5
-0
A system having an open loop transfer function $$G\left(s\right)=\frac{K\left(s+3\right)}{s\left(s^2+2s+2\right)}$$ is used in a control system with unity negative feedback. Using the Routh-Hurwitz criterion, find the range of values of 'K' for which the feedback system is stable.
EXAM MAP
Medical
NEET