Problem 3 Refer to the system below Controller ProcesS fluid Temperature transmi

Question

Problem 3 Refer to the system below Controller ProcesS fluid Temperature transmitter Steam valve 1. The control system uses this controller: a. Feedback b. Feedforward c. d. None of the above Both of the above 2. The controlled variable is: a. b. c. d. Steam flow rate in the coil Tank process fluid level Tank process fluid temperature Tank Process fluid pressure 3. The manipulated variable is: a. b. c. d. Steam flow rate in the coil Tank process fluid level Tank process fluid temperature Tank Process fluid pressure 4. The measurement element in the system is: a. b. c. d. Steam flow control valve Controller Temperature transmitter None of the above 5. The final control element in the system is a. Controller b. Steam flow control valve c. Temperature transmitter d. None of the above 6. The setpoint is stored in this element: a. Steam flow control valve b. Temperature transmitter c. Controller d. Noneo

Explanation / Answer

1. (C)Both the above.

The control system uses both feedforward and feedback system.

2. (A) the controlled variable is steam flow rate in the coil.

3. (C) the manipulated variable is tank process fluid temperature.

4. (C) Temperature Transmitter

5. (A) Controller

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