Answer Happy

pls answer both questions if possible, else question b) is priority.
Desired Speed (ii) K S 10 s + 100 Vi (s) 0.318 Figure Q5(a)(ii): DC Motor speed control system block diagram (1) Find the range of controller gain required to ensure that the system will operate in stable condition. E (s) Find the frequency of oscillation when the system is marginally stable. K amplifier 2.083 s+ 1.71 - 16- (BEEA 2383) (b) A block diagram of a velocity servomechanism is shown in Figure Q5(b). 5 s(s+ 10) motor Actual Speed 2s Figure Q5(b): A block diagram of a velocity servomechanism [6 marks] [4 marks] SULIT SULIT Ó(s) (i) For the input voltage 5V, determine the value of amplifier K to ensure the steady- state error of the system less than 0.08. [7 marks] K (ii) Replace the amplifier with integration The value of gain K is adjusted so that damping ratio is 0.4. The system is subjected to input v (t) = 5t+1. Find the steady-state error, ess. [8 marks]