13. A viable phase-lag compensator for a unity negative feedback system with plant trans

fer function

1000 G(s) (s+8)(s+14)(s+20) that satisfies the design specifications: (i) no percent overshoot; (ii) rise time T, < 5s, and (iii) position error constant Kp > 6, is which of the following: s+1 a. G(s) = S+0.074 S+0.074 b. G(s)= = 8+1 20s+1 c. G(s) = 100s+1 d. Ge(s) = 20