Question 1: When transferring from automatic to manual, or manual to automatic, the output from the controller and the manual output should be adjusted to the:
A - Broadest range of control values before the transfer B - Same value before the transfer C - Same value after the transfer D - None of the above _______________________________________________
Question 2: The process energy or material that is regulated by a definite value by a controller is the: A - Gain B - Manipulated variable C - Controlled variable D - Set point _______________________________________________
Question 3: With a proportional-only controller:
A - Offset is removed B - Offset can be minimized with a small control range C - Offset will always exist D - None of the above _______________________________________________
Question 4: The percent of the process variable range that causes 100% change in controller output is called the: A - Set point B - Gain C - Proportional variance D - Proportional band _______________________________________________
Question 5: The part of the control loop that regulates the manipulated variable is the: A - Proportional band B - Final control element C - Controlled variable D - Setpoint _______________________________________________
Question 6: The output of an on-off controller will be either at minimum or at maximum of the: A - Controlled variable B - Final control element C - Control range D - Proportional-plus-reset _______________________________________________
Question 7: The controller mode that makes a corrective action whose rate of change is proportional to the size of error and the time it lasts is called: A - Reset B - Reset plus rate C - Offset D - Automatic manual _______________________________________________
Question 8: The difference between the set point and the actual value of the process variable is known as: A - Proportional variance B - Offset or error C - Process interdependence D - Process stabilization _______________________________________________
Question 9: The controller mode that takes into account the speed at which the variable is deviating from the setpoint is referred to as:
A - Reset B - On-off C - Proportional D - Rate _______________________________________________
Question 10: The desired value of the process variable is called the: A - Controlled variable B - Set point C - Control mode D - Manipulated variable _______________________________________________
Question 11: In an automatic-manual station, the control element that is used to pass the signal to the final control element is called a: A - Reset plus rate regulator B - Transfer switch C - Feedback bellows D - Gate valve _______________________________________________
Question 12:The width of the proportional band, or the gain, determines the output from the proportional controller and the difference between the value of the: A - Manipulated variable and set point B - Proportional-plus-reset and set point C - Error and set point D - Process variable and set point
_______________________________________________
Question 13: The process quantity that is maintained at or near some desired value is called the:
A - Controlled variable B - Final control element C - Manipulated variable D - Set point _______________________________________________
Question 14: Integral action, called reset, is a controller mode that makes a corrective action whose rate of change is proportional to the size of:
A - The desired value of the process variable B - The manual effort on the control drive C - The rate at which the variable is deviating from the set point D - Error and the time it lasts _______________________________________________
Question 15: The time that a change in load takes place to the time the change in the process variable is sensed by a controller is referred to as: A - Rate B - Transfer C - Error D - Lag _______________________________________________
Question 16: Derivative action, which could not possibly control the process by itself, takes into account the speed at which the variable is deviating from the set point. Rate contribution occurs only when there is a change in rate of the: A - Set point B - Gain C - Control range D - Error _______________________________________________
Question 17: When transferring from automatic to manual, if there is no difference in signals, the final control element will be subject to a sudden change or "bump" which will upset the process. A - True B - False _______________________________________________
Question 18: The ratio of change of output (V) to change of input (PV) is the: A - Setpoint B - Proportional band C - Gain D - Offset _______________________________________________
Question 19: A device that allows the position of the final control element to be maintained anywhere between minimum and maximum is the: A - Proportional controller B - Transfer switch C - Regulator D - Sensing element _______________________________________________
Question 20: Rate action control:
A - Causes processes that respond quickly to stabilize more quickly B - Causes processes that undergo large load changes to oscillate C - Causes processes that respond quickly to oscillate D - None of the above _______________________________________________
Question 21: For proper on-off control:
A - The speed of load changes must be fairly slow and the size of the load change should be small B - The speed of load changes must be rapid and the size of the load change should be large C - The speed of load changes must be fairly slow and the size of the load change should be large D - The speed of load changes must be rapid and the size of the load change should be small
