GATE 2025 Control Systems Foundation Quiz 62

Consider a unity feedback control shown in figure.

The range of K for the system to stable assume (k > 0).

System shown below will oscillate continuously at a frequency of _____ rad/sec

A certain closed loop system with unity feedback has the forward path transfer function given by

 with its gain at ultimate value, the system will oscillate at an angular frequency (in rad/sec) of ______

For a non-unity feedback system as shown in the figure below, if this system is converted into unity feedback system, then determine the open loop gain G(s) of the system.

The open loop transfer function of a unity feedback system is  The system is unstable for