Chapter $9$

Draw the Nyquist Diagram for $G(s)=\frac{(\mathrm{.}1s+1)}{(s+1{)}^3}$ Find the phase and gain margins

Draw the Nyquist Diagram for $G(s)=\frac{10}{(s+1{)}^4}$ Find the phase and gain margins

$3.$ Draw the Bode Plots $($by hand using straight line approximations$),$ the Nyquist Diagrams and find the phase and gain margins for:

a$.G(s)=\frac{10}{(s+1{)}^2}$

b$.G(s)=\frac{(\mathrm{.}1s+1)}{(s+1{)}^1}$

c$.G(s)=\frac{10}{(s+1{)}^3}$