engineering recuitment UPMRC JE 2024 Mock Test Control Systems Frequency Response Analysis Phase Margin
Consider a unity - gain feedback control system whose open - loop transfer function is:
\(G\left( s \right) = \frac{{as + 1}}{{{s^2}}}\)
The value of a so that the system has a phase - margin equal to \(\frac{\pi }{4}\)is approximately equal to
1
2.40
2
1.40
3
0.84
4
0.74