Question 1

Which one of the following is NOT one of the advantages that control systems offer?

Accepted Answer

The answer of Which one of the following is NOT...

Question 2

Which of the following is NOT a cause of steady state error?

Accepted Answer

The answer of Which of the following is NOT a...

Question 3

Which one of the following is NOT one of the major control objectives?

Accepted Answer

Smooth and quiet operation is not typically classified as a major control objective in the context of control theory. Major control objectives usually focus on stability, desired transient response, system robustness, and reducing steady-state error.

Question 4

Which one of the following statements about the response curve of a system is NOT true?

Accepted Answer

The response curve of a system aims to improve performance by reducing errors and delays, not maximizing them. Maximizing the minimum value of error would worsen system performance, contrary to the goals of system design.

Question 5

Select the statement below that is the definition of a quarter amplitude decay response curve.

Accepted Answer

A quarter amplitude decay response curve is characterized by each successive peak of the ringing output being 25 percent of the previous peak.

Question 6

Select the statement below that is the definition of a peak percentage overshoot response curve.

Accepted Answer

The peak percentage overshoot in a response curve refers to the maximum amount by which the system's response exceeds its final steady-state value, expressed as a percentage of the step change. This is a key parameter in evaluating the transient response of control systems.

Question 7

Select the statement below that is the definition of a minimum integral of the absolute error response curve.

Accepted Answer

The minimum integral of the absolute error response curve aims to minimize the area between the ideal (desired) response and the actual response of a system, thereby reducing the overall error.

Question 8

Select the statement below that is the definition of a critically damped response curve.

Accepted Answer

A critically damped response curve is characterized by the minimum damping necessary to prevent oscillations, achieving the quickest return to equilibrium without overshoot, which matches the description in option A.

Question 9

Identify the true statement.

Accepted Answer

Increased gain in a control system indeed reduces the steady-state error because the system becomes more responsive to errors. However, this also tends to increase the system's oscillatory behavior, leading to more ringing.

Question 10

Identify the true statement.

Accepted Answer

Decreased controller gain reduces overshoot because it makes the control system less aggressive, thereby reducing the tendency of the system to exceed the desired setpoint.

Question 11

Find the true statement for the process controller for a long process reaction with no transfer lag, no dead time, and small slow distrubances.

Accepted Answer

The answer of Find the true statement for the process...

Question 12

Find the true statement for the process controller for a long process with a large inertia and large capacitance.

Accepted Answer

The answer of Find the true statement for the process...

Question 13

Find the true statement for the process controller for a process with a short process reaction time and rapid changes in the process variable due to disturbances.

Accepted Answer

A PD (Proportional-Derivative) controller is suitable for processes with short reaction times and rapid changes because it can predict future errors and adjust the control action accordingly, making it effective for such conditions.

Question 14

Find the true statement for the process controller for a process that must have no offset in the process variable when the process has small capacitance and with a slow but large disturbance.

Accepted Answer

A PI (Proportional-Integral) controller is effective in eliminating steady-state offset, which is crucial for processes that must have no offset in the process variable. The integral component of a PI controller accumulates error over time and adjusts the control output to eliminate the offset, making it suitable for processes with small capacitance and slow but large disturbances.

Question 15

Find the true statement for the process controller for a process that is noisy, cannot have steady -state error, and has large load changes.

Accepted Answer

The answer of Find the true statement for the process...

Question 16

MATCHING. Choose the item in column 2 that best matches each item in column 1.
Match the process control term with the correct definition of the term. Definitions may be used more than once.
-Set point

Accepted Answer

E represents the correct definition for "Set point" as it is the value that the process variable is intended to reach and maintain.

Question 17

MATCHING. Choose the item in column 2 that best matches each item in column 1.
Match the process control term with the correct definition of the term. Definitions may be used more than once.
-Reference transducer

Accepted Answer

The answer of MATCHING. Choose the item in column 2...

Question 18

MATCHING. Choose the item in column 2 that best matches each item in column 1.
Match the process control term with the correct definition of the term. Definitions may be used more than once.
-Reference

Accepted Answer

The answer of MATCHING. Choose the item in column 2...

Question 19

MATCHING. Choose the item in column 2 that best matches each item in column 1.
Match the process control term with the correct definition of the term. Definitions may be used more than once.
-Summing junction

Accepted Answer

A summing junction is a device that algebraically adds two inputs and outputs the sum or difference, matching definition K.

Question 20

MATCHING. Choose the item in column 2 that best matches each item in column 1.
Match the process control term with the correct definition of the term. Definitions may be used more than once.
-Error

Accepted Answer

The term "Error" in process control refers to the difference between the set point and the process variable.

Quiz 7: Embedded Microcontrollers, Open and Closed Loop Process Control

Which one of the following is NOT one of the advantages that control systems offer?

Which of the following is NOT a cause of steady state error?

Which one of the following is NOT one of the major control objectives?

Which one of the following statements about the response curve of a system is NOT true?

Select the statement below that is the definition of a quarter amplitude decay response curve.

Select the statement below that is the definition of a peak percentage overshoot response curve.

Select the statement below that is the definition of a minimum integral of the absolute error response curve.

Select the statement below that is the definition of a critically damped response curve.

Identify the true statement.

Identify the true statement.

Find the true statement for the process controller for a long process reaction with no transfer lag, no dead time, and small slow distrubances.

Find the true statement for the process controller for a long process with a large inertia and large capacitance.

Find the true statement for the process controller for a process with a short process reaction time and rapid changes in the process variable due to disturbances.

Find the true statement for the process controller for a process that must have no offset in the process variable when the process has small capacitance and with a slow but large disturbance.

Find the true statement for the process controller for a process that is noisy, cannot have steady -state error, and has large load changes.

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Set point

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Reference transducer

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Reference

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Summing junction

MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the process control term with the correct definition of the term. Definitions may be used more than once. -Error