The open loop transfer function of a unity feedback control system is given by K(s + 2) s + s2 + 4s +1 Determine the value of K and B such that the closed loop unit step response has n = 3 rad/sec and } = 0.2. G(s) = (b) Using Routh-Hurwitz criterion determine the relation between K and I' so that unity feedback control system whose open loop transfer function given below is stable. G(s) = Also determine the modified relation between K and T'if all the roots of characteristic equation are to lie to the left of the line s = -1 in the s-plane. K s[s(s+10)+7]