Statement for Linked Answer Questions 82 and 83
Consider a unity-gain feedback control system whose open-loop transfer function is
\[G(s)=\frac{as+1}{s^{2}}\]
The value of '$a$' so that the system has a phase-margin equal to $\frac{\pi}{4}$ is approximately equal to
- $2.40$
- $1.40$
- $0.84$
- $0.74$