ESE 2021 Technical Quiz 26 || Routh Hurwitz and Various Plots (Root Locus)

The open loop transfer function of a negative feedback closed loop system . For the closed system, s = –1 satisfies.

Let the open loop transfer function of a negative feedback closed loop. System be ; where k is a non-negative real valued parameter.

Which one of the following statements is true about the locus of the closed loop Poles?

Consider a unity feedback system with the forward transfer function

The Range of K to make the system stable is

The polynomial s³ + 5s² + 2s + 12 = 0 has