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QUESTION 14 A control system for a chemical concentration plant is shown in the figure below. Feed Desired concentration Gc (s) 000000 Measurement of Conveyor concentration Output Tank The plant consists of a conveyor belt and a tank. The transport along the conveyor from the input feed to the tank requires a transport time that can be modelled as a pure delay. Estimate this transport time in seconds using the plant's Bode plot in the figure below. Assume the dynamics of the tank can be modelled as a first order system with no zeros and a break frequency of 1rad/s. Give the numerical answer to the nearest integer. Bode Diagram -5 -10 -15 -20 -180 System: Gp Frequency (rad/s): 1 -360 Phase (deg): - -102 -540 -720 10-1 10° 10¹ Frequency (rad/s)

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