ENT 462 pcq set I

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  1. What electrical component allows current to flow in only one direction (approximately)?
    diode
  2. A diode has approximately two values of ______ depending on _______.
    resistance, current direction
  3. The dominant resistances of a diode are very large or very small.
    true
  4. The initial-design goal for the transistor was a component with
    variable resistance
  5. Another word for "mathematically proportional to"
    transformation
  6. The original designers of the transistor were trying to make a
    variable resistor
  7. The transistor was designed by ______ in the ______.
    Bell Labs, 1940s
  8. Transformative-changing variable resistor was the first name proposed for the _____ by the ______.
    transistor, designers
  9. Transforming resistor was the second name proposed for the
    transistor
  10. The name for the transistor was selected from the two words:
    transforming and resistor
  11. A transistor is most like a
    resistor
  12. Signal input to the "transforming resistor" is into the
    base
  13. "power" input to the "transforming resistor" is into the
    collector
  14. "power" output from the "transforming resistor" is from the
    emitter
  15. Trans in transistor was derived from
    transformative
  16. sistor in transistor was derived from
    resistor
  17. One A/D or D/A with one bit-size can have several sensitivities depending on the voltage or current range, if the range is variable.
    true
  18. The numerical value and corresponding analog value in a A/D or D/A can be calculated by
    interpolation
  19. The rise time of the general-purpose OPAMP is about
    3000ns
  20. The A/D or D/A analog signal is usually _____, but sometimes _____ signal.
    voltage, current
  21. The rise time of 7400 series digital TTL chips are about
    6ns to 33ns
  22. Digital signals are ____, and analog signals are _____.
    discrete, continuous
  23. The output of a digital integrated circuit is said to be discrete, because only the ON state and OFF state are considered useful.
    true
  24. The settle time of the THS4211 OPAMP is
    22ns
  25. Analog signals into a computer are converted to digital values through _____ converters
    A/D
  26. The actual signals inside a computer are
    always digital
  27. The values of interest in an analog signal are
    all values between and including minimum and maximum
  28. The values of interest in a digital signal are
    on or off
  29. The output of an opamp is usually considered
    continuous
  30. Computers produce analog output signals through _____ converters.
    D/A
  31. Common A/D and D/A converters are 8, 10, 12, 16 bits. A 10-bit converter utilizes _____ discrete numerical values.
    1024
  32. The rise time of CMOS (low-power) digital chips are about
    500ns
  33. The sensitivity of an A/D or D/A is the smallest voltage or current change corresponding to a digital change of one count.
    true
  34. LabVIEW Front Panel contains
    controls and indicators
  35. LabVIEW Front Panel contains
    virtual instruments
  36. LabVIEW Block Diagram contains
    the program
  37. LabVIEW Block Diagram contains
    preprogrammed blocks of computer code
  38. Almost every object/icon on the Front Panel has a corresponding object/icon on the Block Diagram
    true
  39. The controls on the Front Panel include
    only the slide
  40. The indicators on the Front Panel include
    meter, rule weights, and error out
  41. The Tools Pallet is for changing the way the mouse pointer works and is valid for
    both the Front Panel and Block Diagram.
  42. In the first row of the Tools Pallet is rectangular region, that is currently grey, which means that the mouse pointer functionality is
    manually selected from the options shown.
  43. In the first row of the Tools Pallet is rectangular region, that is currently grey, but will turn green when clicked, which means that the mouse pointer functionality is
    automatically selected by the context of what is pointed at.
  44. Most icons on the Front Panel were selected from the 100s available, by right clicking anywhere in the
    Front Panel
  45. Most icons on the Block Diagram were selected from the 100s available, by right clicking anywhere in the
    Block Diagram
  46. The lower-right quadrant of the Front Panel is not part of the Front Panel. It is presented to demonstrate where to find the
    slide and meter
  47. The digital display for the slide, currently showing 9.84, is not shown by default. The digital display is included by right clicking the slide and selecting it
    true
  48. The lower-left quadrant of the Block Diagram is not part of the Block Diagram. It is presented to demonstrate where to find the
    Fuzzy Controller, Build Path, and Current VI path
  49. The grey line containing the Fuzzy Controller and most icons on the block diagram is a ____ Loop.
    While
  50. In the lower-right of the While Loop on the Block Diagram is a red-stop function. The VI can be stopped by pressing the
    rectangular-stop button on the Front Panel.
  51. The rectangular-stop button on the Front Panel can be created by right clicking the red-stop function in the Block Diagram with the wiring tool, and then selecting "control".
    true
  52. The Arrow Pointer in the Tools Pallet is used for
    moving icons around
  53. The Finger Pointer in the Tools Pallet is used for
    changing values
  54. The Wire-Spool Pointer in the Tools Pallet is used for
    drawing wires
  55. VI stands for
    Virtual Instrument
  56. One A/D or D/A with one bit-size can have several sensitivities depending on the voltage or current range, if the range is variable.
    true
  57. The sensitivity of an A/D or D/A is the smallest voltage or current change corresponding to a digital change of one count.
    true
  58. The A/D or D/A analog signal is usually _____, but sometimes _____ signal.
    voltage, current
  59. The numerical value and corresponding analog value in a A/D or D/A can be calculated by
    interpolation
  60. Common A/D and D/A converters are 8, 10, 12, 16 bits. A 10-bit converter utilizes _____ discrete numerical values.
    1024
  61. Analog signals into a computer are converted to digital values through _____ converters.
    A/D
  62. Computers produce analog output signals through _____ converters.
    D/A
  63. The actual signals inside a computer are
    always digital
  64. The values of interest in an analog signal are
    all values between and including minimum and maximum
  65. The values of interest in a digital signal are
    on or off
  66. The settle time of the THS4211 OPAMP is
    22ns
  67. The rise time of the general-purpose OPAMP is about
    3000ns
  68. The rise time of CMOS (low-power) digital chips are about
    500ns
  69. The rise time of 7400 series digital TTL chips are about
    6NS TO 33NS
  70. The output of a digital integrated circuit is said to be discrete, because only the ON state and OFF state are considered useful.
    true
  71. The output of an opamp is usually considered
    continuous
  72. Digital signals are ____, and analog signals are _____.
    discrete, continuous
  73. The rule of thumb for designing the base resistor for a 2N3904 switch is to use hFE=____.
    20
  74. One way to design for a power transistor is allow ___ more base current than you actually need, to make sure the device remains saturated.
    5x
  75. The BJT switch should be designed to work with the ____ hFE.
    minimum
  76. In both cut-off and saturation, _____ power is dissipated in the transistor.
    minimum
  77. In saturation, the BJT base current is
    maximum
  78. In saturation, the BJT collector-emitter voltage (Vce) is
    minimum
  79. In saturation, the BJT collector current (Ic) is
    maximum
  80. In saturation, the BJT is fully
    on
  81. In cut-off, the BJT collector-emitter voltage (Vce) is
    high
  82. In cut-off, the BJT collector current (Ic) is
    zero
  83. In cut-off, the BJT base current is
    zero
  84. In cut-off, the BJT is fully
    off
  85. For use as a switch, the BJT operates in the regions of the output curves called
    saturation and cut-off
  86. The transistor output characteristic curves have constant
    Ib
  87. The transistor output characteristic curves show ___ on vertical axis.
    Ic
  88. The transistor output characteristic curves show ___ on horizontal axis.
    Vce
  89. For a transistor there are input, output and transfer characteristic curves. The _____ transfer characteristic curves may be most useful in switch design.
    output
  90. If the transistor is biased into saturation or cut-off, it will be used as
    a switch
  91. If the transistor is biased into the linear region, it will be used as
    an amplifier
  92. A bipolar junction transistor (BJT) can be used in many circuit configurations; as an amplifier, oscillator, filter rectifier or just used as a
    switch

Card Set Information

Author:
lacythecoolest
ID:
327681
Filename:
ENT 462 pcq set I
Updated:
2017-03-11 21:50:57
Tags:
engineering
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Description:
set I
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