ENT 461 preclass quizsset II

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  1. The Feedback Inc 33-033 unit is a ______ system
    servomotor
  2. The mechanical unit is connected to the control panel
    through the ribbon cable
  3. The control panel is connected to the computer through
    the USB cable
  4. The 33-033 system is powered by +15VDC, -15VDC, 5VDC, and ground
    true
  5. The DC servomotor is about _____ inches in diameter:
    two
  6. The output shaft is
    connected to the motor shaft through pulleys and belts
  7. The position sensor on the output shaft is
    32:1
  8. A digital display shows the ______ shaft speed in ______.
    output, rpm
  9. The speed sensor on the motor shaft is
    tachometer or tacho-generator
  10. The position sensor on the motor shaft is
    incremental encoder
  11. The input voltage range to the power amplifier to the motor is approximately plus and minus
    1VDC
  12. The "zero offset" potentiometer on the power amplifier to the motor is used to set the initial speed to 0
    0
  13. The "Input Potentiometer" range is about +-1VDC and is located on the
    mechanical unit
  14. The "variable dc" input potentiometer range is about +-1VDC and is located on the
    control panel
  15. Sine, square, and triangle input signals to the servomotor power amplifier are possible through
    the control panel.
  16. The video demonstrated motor manual-speed control using the
    Input potentiometer on the mechanical unit
  17. The video demonstrated motor automatic-speed control using the
    sine wave input
  18. Steady state error is the difference between the steady state output and the input.
    true
  19. Zeta and wn can be determined directly from the transfer function poles.
    true
  20. An overdamped system has zeta
    greater than one
  21. A critically damped system has zeta
    equal to one
  22. A critically damped or overdamped system's step response will have overshoot.
    false
  23. An underdamped system's step response will have overshoot.
    true
  24. An underdamped system has zeta between zero and ____.
    1
  25. s^2 + 2*zeta*wn*s + wn^2 is a useful form for the denominator of a 2nd-order transfer function. wn (radians/second) is
    undamped natural frequency
  26. s^2 + 2*zeta*wn*s + wn^2 is a useful form for the denominator of a 2nd-order transfer function. zeta is
    damping ratio
  27. Which one of these MATLAB functions multiplies two polynomials?
    conv()
  28. Which one of these MATLAB functions makes a table of step response parameters?
    ltiview()
  29. Four MATLAB functions were used in the video: tf(), stepinfo(), ltiview(), and conv().
    true
  30. The response at the first peak minus the steady state value divided by the steady state value and converted to percent is defined as
    percent overshoot
  31. WebCHARLIE uses the variable PO for percent overshoot. Does the video use the variable %Mp for percent overshoot?
    yes
  32. The time to the _____ peak is identified as peak time (tp).
    first
  33. The text uses +-2% for settle time, but the video used +-___%.
    1
  34. Settle time of a step response is the time to go from zero to 99% of the steady state value.
    false, because 99% and 101% must be included
  35. Rise time of a step response is the time to go from ___% to ___% of the total response.
    10, 90
  36. The video does not mention the closed loop controller that positions the head, but the last homework exercise does.
    true
  37. Ref video: signal processing permits even greater data-storage capacity.
    true
  38. Ref video: smaller platter-head separation results in _____ data-storage capacity.
    greater
  39. Ref video: the platter-head separation is about _____nm and the wavelength of light is between 400 and 700 nm.
    10
  40. Ref video: the speed of the platter relative to the floating head is ____ mph.
    80
  41. Ref video: no electrical pulse in the head corresponds to
    0
  42. Ref video: a negative electrical pulse in the head corresponds to a
    1
  43. Ref video: a positive electrical pulse in the head corresponds to a
    1
  44. Ref video: the linear motor moves due to the ______ force.
    Lorentz
  45. 14. Ref video: a spinning disk that contains the magnetized bits is the
    platter
  46. Ref video: ones and zeros are written (or read) by the
    head
  47. Ref video: physical motion of the head is caused by a(n)
    voice-coil actuator
  48. This course considers systems with one input and one output. Therefore R=0 so that the system response (C) to disturbance (D) can be evaluated.
    true
  49. In H461220, Figure 220 has ___ input signal(s).
    2
  50. In H461220, the sensor in Fig. 220 is
    H
  51. In H461220, the sensor in Fig. 220 is
    1/(s+1)
  52. In H461220, the controller in Fig. 220 is
    K
  53. In H461220, the error signal in Fig. 220 is
    E(s)
  54. In H461220, the output signal in Fig. 220 is
    C(s)
  55. H461220, the input signal in Fig. 220 is
    R(s)
  56. In H461220, the disturbance signal in Fig. 220 is
    D(s)
  57. In H461220, distubance in a closed loop feedback system is
    undesirable and not avoidable usually
  58. In H461220, the focus of this video is on disturbance
    rejection
  59. The partial derivative of z(x,y) with respect to y, means that ___ is held constant.
    x
  60. The partial derivative of z(x,y) with respect to x, means that ___ is held constant.
    y
  61. z(x,y) = f(x,y). A common notion of partial derivative of f with respect to y is
    fy
  62. z(x,y) = f(x,y). A common notion of partial derivative of f with respect to x is
    fx
  63. The number of lines that define a plane is
    two
  64. The number of tangent lines to any point on a surface is
    infinite
  65. The number of tangent planes to any point on a surface is
    one
  66. Partial derivative of z(x,y) with respect to y is the same a regular derivative except ___ is considered constant.
    x
  67. Partial derivative of z(x,y) with respect to x is the same a regular derivative except ___ is considered constant.
    y
  68. Partial derivatives are meaningful in 3D surfaces.
    true
  69. The derivative of z(x,y) at constant x is the ____ derivative of z with respect to ____.
    partial, y
  70. The derivative of z(x,y) at constant y is the ____ derivative of z with respect to ____.
    partial, x
  71. When one takes a derivative of a 3D surface, the direction of the derivative
    must also be specified
  72. The number of slopes for any point on a 3D surface is
    infinite
  73. A function that produces a 3D surface is z(x,y), which means that z is a function of
    x and y
  74. In a right-hand coordinate system,
    ixj=k
  75. Ground loops can be caused by grounding
    both ends of a cable
  76. Ground loops are
    undesirable and avoidable
  77. A primary purpose of the instrumentation amplifier is
    amplifies a small signal while rejecting a common-mode DC component
  78. An instrumentation amplifier has
    plifies a small signal while rejecting a common-mode DC component
  79. An instrumentation amplifier has
    differential input and a single-ended output with respect to ground
  80. See Fig 4.1. The ground point on the op-amp is not shown,
    because there is no ground point on an op-amp
  81. The op-amp is ubiquitous device, meaning that
    it is commonly used
  82. most applications with feedback, voltage gain, input impedance, and output impedance depend on
    external components
  83. See Fig 4.1. The op-amp is
    rarely used without feedback
  84. The ability of an op-amp to eliminate unwanted coupling between adjacent op-amps
    channel separation
  85. See Fig 4.1. The no-load supply current (I_s) is
    typically a few mA
  86. See Fig 4.1. The op-amp output (for which current can go in or out)
    can be shorted indefinitely
  87. See Fig 4.1. The short-circuit current (Isc) is typically
     10ma to 30mA
  88. See Fig 4.1. Zout is
    typically small
  89. See Fig 4.1. The input impedance (Zin+ and Zin-) are
    typically 100s of Mohms
  90. See Fig 4.1 Vs is
    supply voltage
  91. See Fig 4.1. The op-amp output current (I.out) originates from
    +Vs and -Vs
  92. See Fig 4.1. Vout = ( (Vin+) - (Vin-) ) * A where A is the op-amp gain and is
    typically hundreds of thousands, but never known precisely
  93. See Fig 4.1
    • Vs is usually about 15v
    •  -Vs < Vout < +Vs
    •  I.in+ = I.in- is approximately zero
  94. See Fig 4.1. When connected to other components and when
    n+ = Vin-, the op-amp is operating in the linear range
  95. Many op-amps today cost less than $1
    and are a major building block in industrial circuits
  96. The first solid-state op-amp was designed by Bob Widlar at Fairchild Semiconductor and sold in 1963 for about
    $300
  97. The op-amp has
    • low output impedance
    • high input impedance
    • high gain
  98. All of these are active (not passive) because of the plus and minus supply voltages
    true
  99. A passive system does not require supply voltages.
    true
  100. All of the opamp filters are on Figure 9033-____.
    B
  101. The basic opamp without any feedback is subfig A-11
    true
  102. The voltage follower is subfig ___
    A-32
  103. The non-inverting amplifier is subfig ___
    A-22
  104. The inverting amplifier is subfig ___
    A-21
  105. The integrator is subfig ___
    A-24
  106. The differentiator is subfig ___
    A-34
  107. The summing amplifier is subfig ___
    A-13
  108. The differential amplifier is subfig ___
    A-23
  109. The current-to-voltage converter is subfig ___
    A-14
  110. The voltage-to-current converter is subfig ___
    A-33
  111. RB in subfig A-31 is calculated as the parallel combination of R1 and RF for the purpose of reducing the output offset voltage
    true
  112. The first-order low-pass filter is subfig ___
    B-11
  113. The unity-gain second-order low-pass filter is subfig ___
    B-12
  114. The non-unity-gain second-order low-pass filter is subfig ___
    B-31
  115. fourth-order low-pass filter is subfig ___
    B-21
  116. The first-order high-pass filter is subfig ___
    B-32
  117. e second-order high-pass filter is subfig ___
    B-13
  118. e band-pass filter is subfig ___
    B-33
  119. The band-stop filter is subfig ___
    B-22
  120. The monolithic (2 or 3 matched opamps in a single package) usually provide specifications that more-closely match actual preformance in subfig ___
    BOTH OF THESE

Card Set Information

Author:
lacythecoolest
ID:
324764
Filename:
ENT 461 preclass quizsset II
Updated:
2016-10-20 08:33:57
Tags:
engineering
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Description:
1st semester 2nd set
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