Q1 A control plant has the following transfer function, 9 G(s)=3+68+9 i) Evaluate the discrete transfer function for the system with zero order hold if the sampling time, T, is equal to 0.2s. ii) Determine the closed-loop discrete transfer function with unity feedback. iii) For the closed-loop discrete transfer function obtained in Q2(ii), evaluate the time constant, t, and damping ratio, 5. (15 marks) (5 marks) (5 marks)