V Question One (a) With an appropriate example, explain what is meant by sensors (5 marks) (b) List some characteristics of good sensors (3 marks) (c) A second order dynamic system is given by the following equation where y(t) is the response, x(t) is the disturbance and t is the time in seconds: dy dy +5 +6y = 2x(t); y(0) = 0; y'(0) = 0 dt2 dt chy Determine: (i) The open loop transfer function, Y(S)/X(S), for this system (2 marks) (ii) The response, yt), for a disturbance, x(t) of 6 units (7 marks) The open loop response, y(t), after time, t = 4 seconds