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DIGITAL ELECTRONICS QUIZ

Q:   If DC current gain is 50 and base current is 0.23mA than collector current will be___.

  • A:  11.5mA
  • B:  15.5mA
  • C:  22.9mA
  • D:  50.23mA

Q:   A measurement of maximum speed at which DACs circuitry can operate and still produce correct output is called ____.

  • A:  Maximum Sampling Rate
  • B:  Minimum Sampling Rate
  • C:  Maximum Summation Rate
  • D:  Minimum Summation Rate

Q:   Voltage gain 'Av ' of transistor amplifier (where r' =internal resistance) can be calculated as____.

  • A:  RC /r'e(emitter)
  • B:  RC/r'c(collector)
  • C:  RC/r'b(base)
  • D:  RC/r'D(drain)

Q:   Voltage gain of transistor amplifier that has output of 10V rms and an input of 300mV rms is____.

  • A:  0.33
  • B:  3.33
  • C:  33.33
  • D:  333.33

Q:   When emitter is at ground, Voltage at collector of general BJT model will be____.

  • A:  VBB (base supply)+VBE
  • B:  VBB (base supply)-VBE
  • C:  VBB (base supply)+VBE /RB
  • D:  VCC (collector supply)-VRC(Collector connected resistor)

Q:   An ideal DAC converts abstract numbers into a conceptual sequence of____.

  • A:  Impulses
  • B:  Signals
  • C:  Quantizations
  • D:  Summations

Q:   LED seven-segment display uses seven individual____.

  • A:  Light emitting diodes
  • B:  Light restoring diodes
  • C:  Capacitors
  • D:  Inductors

Q:   An ADC works by sampling value of input at____.

  • A:  Discrete intervals
  • B:  Continuous intervals
  • C:  Exponential intervals
  • D:  Determinant intervals

Q:   Quantization error is basically____.

  • A:  Noise
  • B:  Sound
  • C:  Light
  • D:  Wave

Q:   Region or mode in which emitter and collector regions switch roles is called____.

  • A:  Forward active mode
  • B:  Reverse active mode
  • C:  Cut-off mode
  • D:  Saturation mode
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