Stability Theory » Exercise - 134. For the application of Routh’s test, all the coefficients of the characteristic equation must be : (a) real (b) imaginary (c) complex (d) none of these
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 - 143. The routh stability criterion for testing the stability of system is : (a) an algebraic method (b) a graphical method (c) combination of a and b (d) none of these