Trend values of graphic HMI terminals display information on process variables over a period of time.
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Q12: Closed-loop control systems contain a feedback element.
Q13: The deadband of a controller is the
Q14: Distributive control systems are network based.
Q15: A sensor could be classified as a
Q16: An open-loop system is one in which
Q18: A continuous process involves the flow of
Q19: Actuators convert physical information into electrical signals.
Q20: With on/off control, the measured variable will
Q21: Proportioning action occurs within a proportional band
Q22: A PID controller must be factory-tuned to
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