Questions and Answers
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. - Correct
answer-load
A(n) ____________________ is the desired value at which a process should be
controlled and is used by a controller as a reference for comparison with the PV. -
Correct answer-setpoint
Capacitance is the ability of a process to store material or energy. - Correct answer-
true
A ___ variable is an independent variable in a process control system that is used
to adjust a dependent variable. - Correct answer-control
A(n) ___ curve is a plot of the PV against the CV. - Correct answer-process
An ___ reaction is a chemical reaction that generates heat during the reaction and
increases temperature. - Correct answer-exothermic
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, ____________________ action is the situation where the controller output
decreases with an increase in the measurement of the PV. - Correct answer-reverse
A(n) ____________________ loop is a control system that sends a control signal
to a final element but does not verify the results of that control. - Correct answer-
open
All controllers must have a setpoint to be able to provide a control function. -
Correct answer-true
Dead time is a delay in the response of a process that represents the time it takes
for a process to respond completely when there is a change in the inputs to the
process. - Correct answer-false
Process dynamics are the attributes of a process that describe how a process
responds to ____________________ changes imposed upon it. - Correct answer-
load
____________________ is the ratio of the change in output to the change in input
of a process. - Correct answer-gain
Error is the difference between a process variable and a setpoint. - Correct answer-
true
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