A. A proportional controller for a level control system (direct action) has a bias of 3 ft. and outputs a value for the control variable of 20 ft. If the bias were increased to 6 ft., what would be the new output? Assume the same error in both cases. A. 10 ft. B. 23 ft. C. 17 ft. D. 40 ft. B. Which method can be used to directly measure the controller gain? a. Tuning map method b. Ziegler-Nichols closed-loop tuning c. Setpoint step change tuning d. Ziegler-Nichols open-loop tuning C. When a controller is placed in manual mode, what happens to the automatic control output from the controller? a. Automatic control outputs are blocked by an open circuit. b. The output exhibits a step change. c. The control action switches from direct action to reverse action. d. The manual actions are overridden by the automatic control functions.
A. A proportional controller for a level control system (direct action) has
a bias of 3 ft. and outputs a value for the control variable of 20 ft. If the
bias were increased to 6 ft., what would be the new output? Assume the
same error in both cases.
A. 10 ft. B. 23 ft. C. 17 ft. D. 40 ft.
B. Which method can be used to directly measure the controller gain?
a. Tuning map method
b. Ziegler-Nichols closed-loop tuning
c. Setpoint step change tuning
d. Ziegler-Nichols open-loop tuning
C. When a controller is placed in manual mode, what happens to the automatic control output from the controller?
a. Automatic control outputs are blocked by an open circuit.
b. The output exhibits a step change.
c. The control action switches from direct action to reverse action.
d. The manual actions are overridden by the automatic control functions.
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