The polar diagram of a conditionally stable system for open loop gain K=1 is shown in figure. The open loop transfer function of the system is known to be stable. The closed loop system is stable for

The open loop transfer function of a unity feedback system is given by G(s)=$${{3{e^{ - 2s}}} \over {s\left( {s + 2} \right)}}.$$ The gain and phase crossover frequencies in rad/sec are, respectively

Which one of the following polar diagrams corresponds to a lag network?

Both transistors T1 and T2 in figure have a threshold voltage of 1 Volt. The device parameters $${K_1}$$ and $${K_2}$$ of $${T_1}$$ and $${T_2}$$ are, respectively, 36 µA/ $${V^2}$$ and and 9$$9\,A/{V^2}$$. The output voltage $${V_0}$$ IS