# Polar plot of s/(1+(s*T))

The magnitude at w=0 comes out to be 0 (=1/infinity) , which is different from previous problems (they didn't have any zero) I've calculated, is this right? I guess it should be right (because G(s)should be zero at w=0, that's what comes to my mind if u ask me meaning of having zero at s = 0) but I'm not sure how to do Polar plot if this is right.. pls help me

PS: Did I calculate magnitude for w = 0 right?

• Magnitude will be zero and phase will have a limiting value of 90deg at $\omega = 0$ Nov 1, 2017 at 16:06
• @sarthak, for w = infinity, what will be magnitude & phase?
– Deep
Nov 1, 2017 at 16:42
• When $w=\infty$, magnitude is $\frac{1}{T}$ and phase is $0 {}^{\circ}$. Nov 1, 2017 at 17:13
• @SubaThomas can you please draw rough sketch, I have absolutely no idea how am I gonna plot that
– Deep
Nov 1, 2017 at 17:21
• I will show a plot in the answer for various $T$ values. Nov 1, 2017 at 17:26

As requested in the comments, here is the polar plot for various $T$ values as $\omega$ goes from $0$ to $\infty$.