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Questions and Answers
What is the main difference between open and closed control loops?
What is the main difference between open and closed control loops?
- Open control loops are automatic, closed control loops are manual.
- Open control loops use a regulating unit, closed control loops do not.
- Open control loops are independent, closed control loops are automatic.
- Open control loops are dependent on their output variable, closed control loops are independent. (correct)
What is the purpose of a controller in a process control system?
What is the purpose of a controller in a process control system?
- To regulate the control of the process (correct)
- To respond directly to the variable
- To measure the variable
- To convert the value to a command signal
Which component of a process control loop is responsible for responding directly to the value of the variable?
Which component of a process control loop is responsible for responding directly to the value of the variable?
- Regulating Unit
- Detector (correct)
- Transmitter
- Comparator
Which type of control loop is manual and independent of its output variable?
Which type of control loop is manual and independent of its output variable?
What does the regulating unit represent in a process control system?
What does the regulating unit represent in a process control system?
Which component in a process control loop accepts the command signal and determines the deviation?
Which component in a process control loop accepts the command signal and determines the deviation?
What is the primary purpose of an amplifier circuit on a ship?
What is the primary purpose of an amplifier circuit on a ship?
Which of the following is NOT a function of an amplifier circuit on a ship based on the text?
Which of the following is NOT a function of an amplifier circuit on a ship based on the text?
In what ship components or systems can amplifier circuits typically be found?
In what ship components or systems can amplifier circuits typically be found?
What type of control theory is discussed at the end of Topic 1 in the provided text?
What type of control theory is discussed at the end of Topic 1 in the provided text?
What are disturbances in control theory according to the text?
What are disturbances in control theory according to the text?
Which of the following is an example of a disturbance in a manufacturing process?
Which of the following is an example of a disturbance in a manufacturing process?
What is the advantage of having a standard range for equipment in terms of control air supply?
What is the advantage of having a standard range for equipment in terms of control air supply?
Which type of signal is used to represent the minimum and maximum signals in control air supply?
Which type of signal is used to represent the minimum and maximum signals in control air supply?
In shipboard systems, what is the purpose of converting the output into the standard range for control air supply?
In shipboard systems, what is the purpose of converting the output into the standard range for control air supply?
What type of electrical signal was used by older electrical equipment before the standard 4 to 20 mA range?
What type of electrical signal was used by older electrical equipment before the standard 4 to 20 mA range?
Which device in shipboard systems is responsible for ensuring that the output is within the standard control air supply range?
Which device in shipboard systems is responsible for ensuring that the output is within the standard control air supply range?
What is the main purpose of an amplifier in an electronic circuit?
What is the main purpose of an amplifier in an electronic circuit?
How are operational amplifiers commonly used in electronic circuits for marine applications?
How are operational amplifiers commonly used in electronic circuits for marine applications?
Why do compact, small signal amplifiers find common usage in electronic components?
Why do compact, small signal amplifiers find common usage in electronic components?
How is the output signal of an operational amplifier controlled?
How is the output signal of an operational amplifier controlled?
Where does the additional power to increase the output signal come from in an amplifier circuit?
Where does the additional power to increase the output signal come from in an amplifier circuit?
What is the purpose of applying derivative control in a system with long time delays between changes in the measured value and their correction?
What is the purpose of applying derivative control in a system with long time delays between changes in the measured value and their correction?
Which element acts directly on the controlled body, process, or machine in a servo-mechanism?
Which element acts directly on the controlled body, process, or machine in a servo-mechanism?
What best describes the actuator in a control valve system?
What best describes the actuator in a control valve system?
In a pneumatic-operated control valve, what are the three parts that can be described?
In a pneumatic-operated control valve, what are the three parts that can be described?
What is the main function of a fail-safe strategy in automatic control systems?
What is the main function of a fail-safe strategy in automatic control systems?
What element in an automatic control system receives amplifier output and drives the load directly?
What element in an automatic control system receives amplifier output and drives the load directly?
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