0 votes 0 votes For a second order system, damping ratio, $(\xi)$ is $0<\xi<1$, then the roots of the characteristic polynomial are real but not equal real and equal complex conjugates imaginary Others gate1995-ec + – admin asked Sep 21, 2022 • edited Dec 1, 2023 by makhdoom ghaya admin 46.4k points 45 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.