Question: 9. Consider a unity negative feedback system in Figure 6.27 with loop transfer function where K L(s) =G(s)G(s) = (1+0.5s)(1+0.5s+ 0.25s Determine the value of

9. Consider a unity negative feedback system in Figure 6.27 with loop transfer function where

K L(s) =G(s)G(s) = (1+0.5s)(1+0.5s+ 0.25s Determine the value of K for

K L(s) =G(s)G(s) = (1+0.5s)(1+0.5s+ 0.25s Determine the value of K for which the closed-loop system is marginally stable. a. K = 10 b. K = 3 c. The system is unstable for all K d. The system is stable for all K

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