Process Control & Instrumentation Mcqs for Chemical

Q.  Water is flowing through a series of four tanks and getting heated as shown in figure. It is desired to design a cascade control scheme for controlling the temperature of water leaving the tank 4 as there is a disturbance in the temperature of a second stream entering the tank 2. Select the best place to take the secondary measurement for the second loop?

a. Tank 1
b. Tank 2
c. Tank 3
d. Tank 4


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