Question 2: Reduce the block diagram and specify the equivalent transfer function G(s) Note: Applying the principle of superposition, use Q12(s)=0. 022(S) 011(S) = (s)+ 021 (s) G(s) G(s) G3(s) G7(s) 012 ($) 022(5) G4(s) G5($) G6(s) Question 3 : For an underdamped system (shown below) find the overshoot rate, %OS, the settling time, Ts, and the peak time, Tp. Note: Use unitary input signal, r(t)=u(t). R(s) E(s) 225 C(s) s(s+15)