engineering recuitment GATE EE 2023-24 Test Series Control Systems Root Locus Diagram Characteristic Equation
The open-loop transfer function of a unity feedback system is
\(G\left( s \right)H\left( s \right) = \frac{{K\left( {s + 1} \right)}}{{{s^2}\left( {s + 9} \right)}}\)
In the root locus of the system, as parameter K varies from 0 to ∞, the gain K, when all three roots are real and equal will be _________.Enter numerical value using the virtual keypad. Round off where necessary.