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Questions and Answers
Which of the following is NOT a type of final control element mentioned in the text?
Which of the following is NOT a type of final control element mentioned in the text?
- Recorder (correct)
- Damper
- Control valve
- Variable speed motor drive
What is the purpose of a controller in an automatic control system?
What is the purpose of a controller in an automatic control system?
- To measure process conditions
- To adjust the manipulated variable
- To compare the process variable with a set point (correct)
- To make permanent records of process conditions
What does an indicator and a recorder do in a control system?
What does an indicator and a recorder do in a control system?
- Compare the process variable with a set point
- Position the pen on the chart based on the transmitter output signal
- Validate the conditions observed by control room operators
- Make permanent records of process conditions (correct)
Which of the following is NOT a type of final control element commonly used in control systems?
Which of the following is NOT a type of final control element commonly used in control systems?
What is the purpose of an auto-manual transfer station in a controller?
What is the purpose of an auto-manual transfer station in a controller?
In a control system, what does a recorder do?
In a control system, what does a recorder do?
Which of the following types of transducers converts variable current signals into variable pneumatic signals?
Which of the following types of transducers converts variable current signals into variable pneumatic signals?
What type of transducer converts pneumatic signals into either discrete voltage signals or variable voltage signals?
What type of transducer converts pneumatic signals into either discrete voltage signals or variable voltage signals?
What type of transducer converts a 4-20 mA signal to a 0-10 V proportional signal?
What type of transducer converts a 4-20 mA signal to a 0-10 V proportional signal?
Which type of transducer converts variable voltage signals into variable pneumatic signals?
Which type of transducer converts variable voltage signals into variable pneumatic signals?
What type of transducer uses light-sensitive sensors to detect light intensity at particular wavelengths?
What type of transducer uses light-sensitive sensors to detect light intensity at particular wavelengths?
What type of transducer converts a 0-10 V signal to a proportional 4-20 mA signal?
What type of transducer converts a 0-10 V signal to a proportional 4-20 mA signal?
Which of the following is NOT a function of alarms in a control system?
Which of the following is NOT a function of alarms in a control system?
What is the purpose of logic systems in control systems?
What is the purpose of logic systems in control systems?
Which of the following accurately describes the relationship between alarms and trips in a shutdown system?
Which of the following accurately describes the relationship between alarms and trips in a shutdown system?
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