INTC 1442 Chap. 35-36 Exam Questions AND Correct Answers
___ control is a control strategy that only controls the inputs to a process without feedback from the
output of the process. - ✔✔feedforward
___ is a controller function that positions a final element in a central position when the process variable
is at setpoint. - ✔✔output bias
___ is the change of the PV that exceeds the upper deadband value when there is a disturbance to the
system. - ✔✔overshoot
___ is the integral controller mode, so called because in the older proportional-only controllers the
operator had to manually reset the setpoint. - ✔✔automatic reset
___ is the range of values of an input that corresponds to a full range of output from a controller, stated
as a percentage. - ✔✔proportional band
____________________ action is the situation where the controller output decreases with an increase
in the measurement of the PV. - ✔✔reverse
____________________ control is proportional control combined with integral control. -
✔✔proportional integral
____________________ is the change of the PV that goes below the lower deadband value when there
is a disturbance to the system. - ✔✔undershoot
____________________ is the integral time multiplied by controller gain. - ✔✔integral gain
____________________ is the number of units of a process variable that causes an actuator to move
through its entire range. - ✔✔throttling range
, ____________________ is the ratio of the change in output to the change in input of a process. -
✔✔gain
A ___ change is an uncontrolled change in the process operating conditions that changes the PV and
must be compensated for by a change in the CV. - ✔✔load
A ___ variable is a dependent variable that is controlled in a control system. - ✔✔process
A ___ variable is an independent variable in a process control system that is used to adjust a dependent
variable. - ✔✔control
A primary element is the sensing device that detects the condition of a ___ variable. - ✔✔process
A proportional (P) control strategy is a method of changing the output of a controller by an amount
proportional to the error. - ✔✔true
A step change is a sudden change in an input variable in a process that is managed by a controller. -
✔✔true
A(n) ___ curve is a plot of the PV against the CV. - ✔✔process
A(n) ___ is a control system that provides feedback to a controller on the state of a process variable. -
✔✔closed loop
A(n) ___ is a device that compares a process measurement to a setpoint and changes the CV to bring the
PV back to the setpoint. - ✔✔controller
A(n) ___ is the range of values where a change in measurement value results in no change in controller
output. - ✔✔deadband
___ control is a control strategy that only controls the inputs to a process without feedback from the
output of the process. - ✔✔feedforward
___ is a controller function that positions a final element in a central position when the process variable
is at setpoint. - ✔✔output bias
___ is the change of the PV that exceeds the upper deadband value when there is a disturbance to the
system. - ✔✔overshoot
___ is the integral controller mode, so called because in the older proportional-only controllers the
operator had to manually reset the setpoint. - ✔✔automatic reset
___ is the range of values of an input that corresponds to a full range of output from a controller, stated
as a percentage. - ✔✔proportional band
____________________ action is the situation where the controller output decreases with an increase
in the measurement of the PV. - ✔✔reverse
____________________ control is proportional control combined with integral control. -
✔✔proportional integral
____________________ is the change of the PV that goes below the lower deadband value when there
is a disturbance to the system. - ✔✔undershoot
____________________ is the integral time multiplied by controller gain. - ✔✔integral gain
____________________ is the number of units of a process variable that causes an actuator to move
through its entire range. - ✔✔throttling range
, ____________________ is the ratio of the change in output to the change in input of a process. -
✔✔gain
A ___ change is an uncontrolled change in the process operating conditions that changes the PV and
must be compensated for by a change in the CV. - ✔✔load
A ___ variable is a dependent variable that is controlled in a control system. - ✔✔process
A ___ variable is an independent variable in a process control system that is used to adjust a dependent
variable. - ✔✔control
A primary element is the sensing device that detects the condition of a ___ variable. - ✔✔process
A proportional (P) control strategy is a method of changing the output of a controller by an amount
proportional to the error. - ✔✔true
A step change is a sudden change in an input variable in a process that is managed by a controller. -
✔✔true
A(n) ___ curve is a plot of the PV against the CV. - ✔✔process
A(n) ___ is a control system that provides feedback to a controller on the state of a process variable. -
✔✔closed loop
A(n) ___ is a device that compares a process measurement to a setpoint and changes the CV to bring the
PV back to the setpoint. - ✔✔controller
A(n) ___ is the range of values where a change in measurement value results in no change in controller
output. - ✔✔deadband
