Question: Q 7 . The open - loop transfer function of a unity feedback control system is given by G ( s ) H ( s

Q 7. The open-loop transfer function of a unity feedback control system is given by
G(s)H(s)=K(s+5)(s+40)s2(s+200)(s+1000)
Discuss the stability of closed loop system as a function of K. Determine values of K which will cause
sustained oscillations in the closed loop system. What are the frequencies of oscillations. Use Nyquist.
approach.
Q 7 . The open - loop transfer function of a

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