The damping ratio and undamped natural frequency of a closed loop system as shown in the figure, are denoted as $$\xi$$ and $$\omega$$_n are

A MOD-2 and a MOD-5 up-counter when cascaded together results in a MOD _________ counter. (in integer).

The maximum clock frequency in MHz of a 4-stage ripple counter, utilizing flip-flops, with each flip-flop having a propagation delay of 20 ns, is ________. (round off to one decimal place).

The transfer function of a real system, H(s), is given as:

$$H(s) = {{As + B} \over {{s^2} + Cs + D}}$$,

where A, B, C and D are positive constants. This system cannot operate as