14.20 from textbook a process that can be modeled as a time delay (gain = 1) is controlled using a proportional feedback controller. the control valve and measurement device have negligible dynamics and steady-state gains of kv = 0.5 and km = 1, respectively. after a small set-point change is made, a sustained oscillation occurs, which has a period of 10 min.
(a) what controller gain is being used? explain.
(b) how large is the time delay?

An engine, weighing 3000 n, is supported on a pedestal mount. it has been observed that the engine induces vibration into the surrounding area through its pedestal at the maximum operating speed. determine the stiffness of the dynamic vibration absorber spring in (n/m) that will reduce the vibration when mounted on the pedestal. the magnitude of the exciting force is 250 n, and the amplitude of motion of the auxiliary mass is to be limited to 2 mm note: in this question type-in right numbers, no decimals, no fractions, no unit. approximate to right number if needed