The necessary condition for the stability of the linear system is that all the coefficients of characteristic equation 1+G(s)H(s) =0, be real and have the :
A. Positive sign
B. Negative sign
C. Same sign
D. Both positive and negative
Answer:C
The necessary condition for the stability of the linear system is that all the coefficients of characteristic equation 1+G(s)H(s) =0, be real and have the :
A. Positive sign B. Negative sign C. Same sign D. Both positive and negative
Explanation: The necessary condition for the stability of the linear system is that all the coefficients of characteristic equation 1+G(s)H(s) =0, is they must have same sign.