List of top Signals and Systems Questions on Transfer Function From Block Diagram Representation

The overall transfer function for the block diagram shown in figure is

The transfer function of two compensators is given as \(C_1= \frac{s+30}{ 30(s+1)}\) and\( C_2= \frac{30(1+s)}{ (30+s) }\) The correct statement is

$H(s) = \frac1{ s^3+ As^2+Bs +5 } $ is the transfer function of a system. The system is stable for constraints

C(s) The noise transfer function $\frac{C(s)}{ N(S)}| _{R(S)=0} $of the given system is