Question: Sketch the complete Nyquist plot and interpret stability therefrom for the systems with following loop transmittances. (a) (mathrm{G}_{1}(s)=frac{4 s+1}{s^{2}(s+1)(2 s+1)}) (b) (mathrm{G}_{2}(s)=frac{1}{s^{4}(s+alpha)})

Sketch the complete Nyquist plot and interpret stability therefrom for the systems with following loop transmittances.

(a) $\mathrm{G}_{1}(s)=\frac{4 s+1}{s^{2}(s+1)(2 s+1)}$

(b) $\mathrm{G}_{2}(s)=\frac{1}{s^{4}(s+\alpha)}$

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