engineering recuitment GATE EE 2023-24 Test Series Control Systems Frequency Response Analysis Nyquist Plot
The transfer function of an open-loop system is given as:
\(G\left( s \right) = \frac{{10K\left( {s + 2} \right)}}{{{s^3} + 3{s^2} + 2s + p}}\;\;\;\;0 < K < 1\)
The Nyquist plot of the system is shown as:
Which of the following statements is correct?
1
For p = 6, the number of roots in RHP of open-loop transfer function is 0
2
For p < 6, the number of roots in RHP of closed-loop transfer function is 0
3
For p > 6, the number of roots in RHP of closed-loop transfer function is 0 and the number of roots in LHP of open-loop transfer function is 3
4
The stability of closed-loop transfer function does not depend on p