Determine the stability of closed loop control system whose characteristic equation is s5+s4+2s3+2s2+11s+10=0.
A. Stable
B. Marginally stable
C. Unstable
D. None of the mentioned
Answer:B
Determine the stability of closed loop control system whose characteristic equation is s5+s4+2s3+2s2+11s+10=0.
A. Stable B. Marginally stable C. Unstable D. None of the mentioned
Explanation: By Routh array s =0 and s =+j. It is having a pair of conjugate root lying on imaginary axis. System is marginally stable.