Question 5General Subjects - 1st Asst/Chief

The correct answer is D) It is a control mode that produces a control action that is proportional to the accumulation of error over time. In a closed-loop process control system, the integral mode of control refers to the control action that is proportional to the accumulated error over time. This means that the controller will continue to adjust the output to reduce the error until it reaches zero, even if the instantaneous error is small. This helps to eliminate steady-state errors and ensures that the system reaches the desired setpoint. The other options are incorrect because they do not accurately describe the integral mode of control. Option A describes the derivative mode, Option B describes the proportional mode, and Option C does not correspond to any standard control mode.