Stability Theory » Exercise - 131. In the formulation or the Routh array, when ever difficulty 1 or difficulty 2 arises, it can be concluded that the system is : (a) unstable (b) conditionally stable (c) marginally stable (d) stable
Stability Theory » Exercise - 147. Because of the addition of pole to G(s)H(s), the stability of the system is : (a) improved (b) reduced (c) not affected (d) none of these
Stability Theory » Exercise - 126. If the system has multiple poles on the jω axis, the system is : (a) stable (b) unstable (c) marginally stable (d) conditionally stable
Stability Theory » Exercise - 130. The characteristic equation 1 + G(s)H(s) = 0 of a system is given by s4 + 8s3 +12s2 +8s + K = 0 For the system to remain stable, the value of gain K should be : (a) zero (b) 0< K (c) >11 (d) positives
Stability Theory » Exercise - 133. If the system has non repeated poles on the jω axis, the system is : (a) stable (b) unstable (c) marginally stable (d) conditionally stable