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Feedback Control Systems MCQ

1. What is the fundamental frequency of the system called?

Excited Frequency

Natural Frequency

Resonant Frequency

Forced Frequency

Answer

Correct Answer: Natural Frequency

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2. What is the Natural Frequency?

The frequency for which the system's frequency response is equal to 1

The frequency for which the system's frequency response is largest

The fundamental frequency of the system

The frequency for which the system's frequency response is smallest

Answer

Correct Answer: The fundamental frequency of the system

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3. What does MV denote?

Manipulated variable

Masked variable

Matched variable

Measured variable

Answer

Correct Answer: Measured variable

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4. What does MRAC stand for?

Multivariate Regression Analysis of Covariance

Model Reference Adaptive Control

Minimum Rate of Asymptotic Convergence

Maximum Recognition Accuracy of Characters

Answer

Correct Answer: Model Reference Adaptive Control

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5. What is MPC?

Maximum Performance Control

Multivariable Proportional Control

Minimum Performance Criteria

Model Predictive Control

Answer

Correct Answer: Model Predictive Control

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6. What is the Modified Z-Transform?

A version of the Z-Score, expanded to allow for an arbitrary processing delay.

A version of the Z-Transform, expanded to allow for an arbitrary processing delay.

A version of the Z-Test, expanded to allow for an arbitrary processing delay.

A version of the Z-Statistic, expanded to allow for an arbitrary processing delay.

Answer

Correct Answer: A version of the Z-Transform, expanded to allow for an arbitrary processing delay.

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7. What does the modified Z-Transform allow for?

A higher order of accuracy

The ability to process two dimensions

An arbitrary processing delay

A complex function

Answer

Correct Answer: An arbitrary processing delay

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8. What is Modern Controls?

A control methodology that uses proportional-integral-derivative

A control methodology that uses the state-space representation to analyze and manipulate the Internal Description of a system.

A control methodology that uses PID

A control methodology that uses fuzzy logic

Answer

Correct Answer: A control methodology that uses the state-space representation to analyze and manipulate the Internal Description of a system.

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9. What is the name of the control methodology that uses the state-space representation?

Modern Controls

Linear Controls

Classical Controls

State-Space Controls

Answer

Correct Answer: Modern Controls

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10. What does MIMO stand for?

Multiple Input, Multiple Output

Minimum Input, Maximum Output

Mean Imaginary, Mean Optimism

Maximum Input, Minimum Output

Answer

Correct Answer: Multiple Input, Multiple Output

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11. What does MFAC stand for?

Multi-Frequency Adaptive Control

Multi-Functional Adaptive Control

Model Following Adaptive Control

Model Free Adaptive Control

Answer

Correct Answer: Model Free Adaptive Control

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12. What is required for a system to have memory?

That its current output is dependent on previous inputs only.

That its current output is dependent on current inputs only.

That its current output is dependent on previous and current inputs.

That its current output is not dependent on any inputs.

Answer

Correct Answer: That its current output is dependent on previous and current inputs.

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13. What does it mean if a system has memory?

The system's current output is dependent on previous and current inputs.

The system can remember previous outputs.

The system can remember previous inputs.

The system can only process one input at a time.

Answer

Correct Answer: The system's current output is dependent on previous and current inputs.

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14. What does MATLAB stand for?

Multi-Tool Language for Artificial Intelligence and Manufacturing

Mastering Active Teaching with Learning and Behaviour Science

Matrix Laboratory

Commercial software having a Control Systems toolbox

Answer

Correct Answer: Commercial software having a Control Systems toolbox

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15. What does a system have if it has imaginary poles?

No poles

An unstable response

A stable response

An oscillatory response

Answer

Correct Answer: An oscillatory response

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16. What does it mean when a system has imaginary poles or imaginary eigenvalues?

The system is not oscillating.

The system is marginal.

The system is unstable.

The system has an oscillatory response.

Answer

Correct Answer: The system has an oscillatory response.

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17. What does magnitude represent in a frequency response?

The DC gain at all frequencies

The AC gain at all frequencies

The DC gain at 0 frequency

The AC gain at 0 frequency

Answer

Correct Answer: The DC gain at 0 frequency

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18. What is the definition of magnitude?

The gain component of frequency response

The rate of change of the amplitude of a wave with respect to time

The rate of change of the frequency of a wave with respect to time

The rate of change of the phase of a wave with respect to time

Answer

Correct Answer: The gain component of frequency response

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19. What does LQR stand for?

Learning Quickly Regimen

Level Quality Rating

Linear Quadratic Regulator

Local Quality Regulation

Answer

Correct Answer: Linear Quadratic Regulator

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20. What does L/R stand for?

Litres per Rouge

Local/Remote operation

Long Range

Left/Right

Answer

Correct Answer: Local/Remote operation

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21. What is the Low Clamp?

User-applied upper bound on control output signal

Lowermost unsigned integer that can be represented

A type of electrical connector

User-applied lower bound on control output signal

Answer

Correct Answer: User-applied lower bound on control output signal

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22. What is Linear Time-Invariant?

A physical quantity

A type of signal

A mathematical function

See Linear, and Time-Invariant.

Answer

Correct Answer: See Linear, and Time-Invariant.

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23. What does LTI stand for?

Linear Time Interval

Line Time Invariant

Linear Time-Invariant

Laplace Transform Invariant

Answer

Correct Answer: Linear Time-Invariant

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24. What is a Linear A system?

A system that satisfies the superposition principle.

A system that is not Homogeneous.

A system that is not additive.

A system that does not satisfy the superposition principle.

Answer

Correct Answer: A system that satisfies the superposition principle.

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25. What are left-hand nullspace solutions to the characteristic equation of a matrix for given eigenvalues?

Left Eigenvectors

Nullspace Vectors

Eigenvectors

Characteristic Vectors

Answer

Correct Answer: Left Eigenvectors

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26. In the Laplace Transform Domain, what is plotted along the vertical axis?

The real part of s

The imaginary part of s

The function

Answer

Correct Answer: The imaginary part of s

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27. Which of the following is not true about the Laplace Transform Domain?

The Laplace Transform of a function is graphed.

The imaginary part of s is plotted along the vertical axis.

The real part of s is plotted along the horizontal axis.

It is a complex domain.

Answer

Correct Answer: The imaginary part of s is plotted along the vertical axis.

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28. What is the Laplace Transform?

An integral transform that converts a function from the time domain into a complex frequency domain.

A mathematical function

A geometrical figure

A physical object

Answer

Correct Answer: An integral transform that converts a function from the time domain into a complex frequency domain.

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29. What does "Lag" refer to?

The observed process impact from an output is the same as the control rate.

There is no observed process impact from an output.

The observed process impact from an output is faster than the control rate.

The observed process impact from an output is slower than the control rate.

Answer

Correct Answer: The observed process impact from an output is slower than the control rate.

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30. Which of the following is not an integral transform?

Z-domain

Z-transform

Laplace transform

Fourier transform

Answer

Correct Answer: Z-domain

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31. What is the Inverse Z-Transform?

Converts a function from the Z-domain into the continuous time domain.

An integral transform that converts a function from the Z-domain into the discrete time domain.

Converts a function from the discrete time domain into the Z-domain.

Converts a function from the continuous time domain into the Z-domain.

Answer

Correct Answer: An integral transform that converts a function from the Z-domain into the discrete time domain.

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32. What is the Inverse Laplace Transform?

A transformation that converts a function from the S-domain into the time-domain

A transformation that converts a function from the time-domain into the S-domain

An integral function

A mathematical function

Answer

Correct Answer: A transformation that converts a function from the S-domain into the time-domain

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33. What does the Inverse Fourier Transform do?

Converts a function from the time-domain into the frequency domain.

Expands a function in the frequency domain.

Compresses a function in the frequency domain.

Converts a function from the frequency domain into the time-domain.

Answer

Correct Answer: Converts a function from the frequency domain into the time-domain.

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34. What is the Inverse Fourier Transform?

A measure of the amplitude of a wave

An integral transform that converts a function from the frequency domain into the time-domain.

The number of complete cycles of a waveform in one second

The rate at which energy is transmitted along a wave

Answer

Correct Answer: An integral transform that converts a function from the frequency domain into the time-domain.

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35. What does an integrator do?

It integrates the system input

It divides the system input

It eliminates the system input

It multiplies the system input

Answer

Correct Answer: It integrates the system input

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36. What is the effect of an integrator on a system?

Integrates the system input

Does nothing to the system input

Multiplies the system input by -1

Adds the system input to the system output

Answer

Correct Answer: Integrates the system input

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37. What is Integrated Squared Error?

Factoring the square of a number

Finding error in a integrated system

Squared error (ideal vs actual performance) is integrated over the analysis period.

A way to calculate theSquare footage of your house

Answer

Correct Answer: Squared error (ideal vs actual performance) is integrated over the analysis period.

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38. What is the Integrated Absolute Error?

The absolute error (ideal vs actual performance) is not integrated over the analysis period.

The absolute error (actual vs ideal performance) is integrated over the analysis period.

The absolute error (actual vs ideal performance) is not integrated over the analysis period.

The absolute error (ideal vs actual performance) is integrated over the analysis period.

Answer

Correct Answer: The absolute error (ideal vs actual performance) is integrated over the analysis period.

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39. If the current output of the system is only dependent on the current input, the system is ___________.

Memory

Dynamic

Instantaneous

Random

Answer

Correct Answer: Instantaneous

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40. What does the Initial Value Theorem allow for?

The Transfer function to be determined from the final conditions of the system.

The initial conditions of the system to be determined from the Transfer function.

The final conditions of the system to be determined from the Transfer function.

The Transfer function to be determined from the initial conditions of the system.

Answer

Correct Answer: The initial conditions of the system to be determined from the Transfer function.

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Feedback Control Systems MCQ

1. What is the fundamental frequency of the system called?

2. What is the Natural Frequency?

3. What does MV denote?

4. What does MRAC stand for?

5. What is MPC?

6. What is the Modified Z-Transform?

7. What does the modified Z-Transform allow for?

8. What is Modern Controls?

9. What is the name of the control methodology that uses the state-space representation?

10. What does MIMO stand for?

11. What does MFAC stand for?

12. What is required for a system to have memory?

13. What does it mean if a system has memory?

14. What does MATLAB stand for?

15. What does a system have if it has imaginary poles?

16. What does it mean when a system has imaginary poles or imaginary eigenvalues?

17. What does magnitude represent in a frequency response?

18. What is the definition of magnitude?

19. What does LQR stand for?

20. What does L/R stand for?

21. What is the Low Clamp?

22. What is Linear Time-Invariant?

23. What does LTI stand for?

24. What is a Linear A system?

25. What are left-hand nullspace solutions to the characteristic equation of a matrix for given eigenvalues?

26. In the Laplace Transform Domain, what is plotted along the vertical axis?

27. Which of the following is not true about the Laplace Transform Domain?

28. What is the Laplace Transform?

29. What does "Lag" refer to?

30. Which of the following is not an integral transform?

31. What is the Inverse Z-Transform?

32. What is the Inverse Laplace Transform?

33. What does the Inverse Fourier Transform do?

34. What is the Inverse Fourier Transform?

35. What does an integrator do?

36. What is the effect of an integrator on a system?

37. What is Integrated Squared Error?

38. What is the Integrated Absolute Error?

39. If the current output of the system is only dependent on the current input, the system is ___________.

40. What does the Initial Value Theorem allow for?

41. What are Initial Conditions?

42. What are the conditions of the system at time t=t0?

43. What is the system output when the system is stimulated by an impulse input?

44. What is the impulse response?

45. What is the Impulse function?

46. What is impulse?

47. What are Hybrid Systems?

48. What is homogeniety?

49. Who is Harry Nyquist?

50. Where did Harry Nyquist do extensive work?

51. What did Hendrik Wade Bode do?

52. What is gain?

53. What is Game Theory?

54. Game Theory is a branch of study related to _______________.

55. What is the Fourier Transform?

56. What is the Frequency Response?

57. What is the Fourier Transform of the impulse response?

58. What does the final value theorem allow one to determine?

59. What is signal filtering?

60. What is the goal of filtering?

61. What is the name of the process when apriori knowledge is used to forecast at least part of the control response?

62. What is the output of the system passed through?

63. What is the Exponential Weighted Average?

64. What is Euler's Formula?

65. What are the nullspace vectors of the characteristic equation for particular eigenvalues called?

66. What are eigenvalues?

67. A system is called dynamic if _______

68. What is a system called if it doesn't have memory?

69. What is a necessary condition for a system to be distributed?

70. What does it mean if a system has an infinite number of states?

71. What is a discrete time system?

72. What is required to bring the process variable (PV) to setpoint (SP)?

73. What is a digital system?

74. What is the time shift between the output change and the related effect called?

75. What is "Deadtime"?

76. What does the damping ratio determine?

77. What is the convolution integral?

78. What is the integral form of the convolution operation?

79. What is the integral of the two functions multiplied together called?