4AE3 U9 C1 Test M

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Which component of an automatic control system continuously compares the value of a process variable with a set point and responds to the error by re-positioning the final control element?

Recorder

Transmitter

Controller (correct)

Indicator

What is the purpose of a recorder in an instrumentation and control system?

To validate the conditions observed by control room operators

To input digital data signals into computerized control systems

To continuously compare the value of a process variable with a set point

To make permanent records of process conditions (correct)

Which final control element is commonly used in boilers to control combustion airflow?

Steam control valve

Damper (correct)

Control valve

Variable speed drive

Which component of an automatic control system is responsible for continuously comparing the value of a process variable with a set point and re-positioning the final control element based on the error measured?

Controller Signup and view all the answers

What is the purpose of a recorder in an instrumentation and control system?

To make permanent records of process conditions for future reference Signup and view all the answers

Which final control element is commonly used in boilers to control fuel flow?

Control valve Signup and view all the answers

Which type of transducer converts variable current signals into variable pneumatic signals?

Pneumatic-to-Current (P/I) Transducers Signup and view all the answers

Which type of transducer converts variable voltage signals into variable pneumatic signals?

Voltage-to-Pneumatic (E/P) Transducers Signup and view all the answers

What type of transducer converts a 4–20 mA signal to a 0–10 V proportional signal?

I/E Transducers Signup and view all the answers

Which type of transducer converts variable voltage signals into variable pneumatic signals?

Voltage-to-Pneumatic (E/P) Transducers Signup and view all the answers

What type of transducer converts a 4–20 mA signal to a 0–10 V proportional signal?

I/E Transducers Signup and view all the answers

What do photoelectric transducers use to detect light intensity?

All of the above Signup and view all the answers

Which type of device is used to transfer a shutdown signal, often converting the signal in the process?

Switches Signup and view all the answers

Which type of device is used as sensing elements in alarms to give visual, audible, or combined warning of unsafe or improper operating conditions?

Indicators Signup and view all the answers

Which type of device can be incorporated into automatic decision-making systems such as Programmable Logic Controllers (PLC)?

Relays Signup and view all the answers

4AE3 U9 C1 Test M

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Questions and Answers

Which component of an automatic control system continuously compares the value of a process variable with a set point and responds to the error by re-positioning the final control element?

What is the purpose of a recorder in an instrumentation and control system?

Which final control element is commonly used in boilers to control combustion airflow?

Which component of an automatic control system is responsible for continuously comparing the value of a process variable with a set point and re-positioning the final control element based on the error measured?

What is the purpose of a recorder in an instrumentation and control system?

Which final control element is commonly used in boilers to control fuel flow?

Which type of transducer converts variable current signals into variable pneumatic signals?

Which type of transducer converts variable voltage signals into variable pneumatic signals?

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?

What type of transducer converts a 4–20 mA signal to a 0–10 V proportional signal?

What do photoelectric transducers use to detect light intensity?

Which type of device is used to transfer a shutdown signal, often converting the signal in the process?

Which type of device is used as sensing elements in alarms to give visual, audible, or combined warning of unsafe or improper operating conditions?

Which type of device can be incorporated into automatic decision-making systems such as Programmable Logic Controllers (PLC)?

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