Question: 4 . Consider the unity negative feedback system where the transfer function is : ( mathrm { G } ( s ) =

4. Consider the unity negative feedback system where the transfer function is : \(\mathrm{G}(s)=\frac{K}{s(s+4)}\). Design a lag controller using the root locus sketch so that the damping ratio of the dominant complex roots is 0.7 seeends while attaining a system velocity constant equal to 20.
(6 Marks)
4 . Consider the unity negative feedback system

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