Problem 2 Refer to the system below: Pneumatic controller Relief valve Pressure

Question

Problem 2 Refer to the system below: Pneumatic controller Relief valve Pressure transmitter Process fluid Fluid pump 1. The control system uses this controller: a. b. c. d. Feedback Feedforward Both of the above None of the above 2. The controlled variable is: a. b. c. d. Fluid flow into the tank Fluid flow out of the tank Fluid pressure in the tank Fluid pressure out of the tank 3. The manipulated variable is a. Fluid flow into the tank b. Fluid flow out of the tank c. F d. Fluid pressure in the bypass loop luid flow in the bypass loop 4. The sensor in the system is the: a. b. c. d. Relief valve Flow control valve Fluid pump Pressure transmitter 5. The controller in the system is a. Pressure transmitter b. Pneumatic controller c. Relief valve d. Fluid pump 6. The setpoint is stored in this element a. Fluid pump b. Relief valve c. Pneumatic controller d. Pressure transmitter

Explanation / Answer

1.its both feedback and feed forward control.

2.Fluid pressure into the tank is controlled variable as the feedback system is taking input from the pressure transmitter

3. fluid flow into the tank is manipulated

4.Pressure transmitter is the sensor in the given system

5. Pneumatic controller is the controller in the system

6. The set point is stored in pneumatic controller

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