An electromechanical closed-loop control system has the following characteristic equation $$s^3+6Ks^2+\left(K+2\right)s+8\;=\;0$$, where K is the forward gain of the system.The condition for closed loop stability is

The steady state error of a stable 'type 0' unity feedback system for a unit step function is

Which of the resistance networks of figure can be used as 3 bit R-2R ladder DAC. Assume $${V_0}$$ corresponds to LSB.

A 4 bit modulo-16 ripple counter uses JK flip-flops. If the propagation delay of each FF is 50ns, the maximum clock frequency that can be used is equal to: