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Figure 1 shows a closed-loop control system in which G(S)=40/[ (S+2) (S+3)], and H(S)=1/(S+4) R(3) E(s) Y(s) G(s) H(s) Figure
Figure 2 shows the Nyquist plot for the open-loop transfer function. NOM & NON System: sys Real: -0.187 Imag: 2.56e-05 Freque
structure.com/courses/68755/quizzes/411964/take S 2 NA System: sys Real: -0.187 Imag: 2.56e-05 Frequency: (rad/s): -5.16 Usin
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Answer #1

Soln Cruien that 40 Gls) (S+2)(3+3) & HIS) S+4 -0-187 a ) Crawn morgun (in dB) from the Nyquist Plot 1x1= 0.187 we knew that,(N) System Stability from Nyquist plat Number of emerelement = 0 We know that N=P-Z Where, N = Number o) Omerekoment P = Numbb) for marginally stable X=1 Therefore GM = - Х. = . Comlin db ) = 20 logi = 0dB

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