INTC 1442 Exam 2026 Questions and
Answers
Common controller performance standards are decay ratio, overshoot, and
____________________. - Correct answer-dead time
Controller tuning is the process of determining the tuning ____________________
to obtain a desired controller response to process disturbances. - Correct answer-
coefficients
Ziegler-Nichols ___ tuning is a method of tuning a controller by increasing the
gain until the system cycles at the point of instability. - Correct answer-closed loop
___ open loop tuning is a method of tuning a controller based on open loop
response to a step input. - Correct answer-Ziegler-Nichols
___ is a check that must be made to a control loop prior to placing it in operation. -
Correct answer-all of the above
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, The ___ is a measure of how quickly an overshoot decays from one oscillation to
the next as the controller brings the process to the setpoint. - Correct answer-decay
ratio
The ultimate period (Tu) is the cycle time at the point of oscillation. - Correct
answer-true
The ___ gain (Ku) is the proportional gain at the point of oscillation. - Correct
answer-ultimate
The ultimate period method is also known as the Ziegler-Nichols closed loop
tuning method. - Correct answer-true
____________________ is the length of time required for the PV to cross the
ultimate value after a step input change, such as a setpoint change. - Correct
answer-rise time
Processes with a lot of dead time must be tuned to respond slowly and minimize
overshoot. - Correct answer-true
A one-quarter decay ratio is a response where the amount of undershoot decays to
one-fourth of the previous amplitude of the overshoot every whole cycle after
being upset by a disturbance. - Correct answer-false
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
Answers
Common controller performance standards are decay ratio, overshoot, and
____________________. - Correct answer-dead time
Controller tuning is the process of determining the tuning ____________________
to obtain a desired controller response to process disturbances. - Correct answer-
coefficients
Ziegler-Nichols ___ tuning is a method of tuning a controller by increasing the
gain until the system cycles at the point of instability. - Correct answer-closed loop
___ open loop tuning is a method of tuning a controller based on open loop
response to a step input. - Correct answer-Ziegler-Nichols
___ is a check that must be made to a control loop prior to placing it in operation. -
Correct answer-all of the above
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, The ___ is a measure of how quickly an overshoot decays from one oscillation to
the next as the controller brings the process to the setpoint. - Correct answer-decay
ratio
The ultimate period (Tu) is the cycle time at the point of oscillation. - Correct
answer-true
The ___ gain (Ku) is the proportional gain at the point of oscillation. - Correct
answer-ultimate
The ultimate period method is also known as the Ziegler-Nichols closed loop
tuning method. - Correct answer-true
____________________ is the length of time required for the PV to cross the
ultimate value after a step input change, such as a setpoint change. - Correct
answer-rise time
Processes with a lot of dead time must be tuned to respond slowly and minimize
overshoot. - Correct answer-true
A one-quarter decay ratio is a response where the amount of undershoot decays to
one-fourth of the previous amplitude of the overshoot every whole cycle after
being upset by a disturbance. - Correct answer-false
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
