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Signals and Switches problems

  • 1. What can a relay provide between the triggering source and the output that semiconductor switching devices cannot?

  • Options
  • A. total isolation
  • B. faster
  • C. higher current rating
  • D. total isolation and higher current rating
    • Discuss
  • 2. If the input voltage on D1 in the given figure is changed to 0 V, what is the output voltage Vout?

    Digital Electronics Signals and Switches: If the input voltage on D1 in the given figure is changed to 0 V, what is the outp


  • Options
  • A. ?5 V
  • B. 0 V
  • C. +5 V
  • D. +4.3 V
    • Discuss
  • 3. What is the advantage of using serial data transmission over parallel data transmission?

  • Options
  • A. It is slower.
  • B. Only one pair of wires is required.
  • C. More people use it.
  • D. It is faster.
    • Discuss
  • 4. The hexadecimal number 4B16 is transmitted as an 8-bit word in parallel. What is the time required for this transmission if the clock frequency is 2.25 MHz?

  • Options
  • A. 444 ns
  • B. 444 µs
  • C. 3.55 µs
  • D. 3.55 ms
    • Discuss
  • 5. Is the transistor in the given figure considered ON or OFF?

    Digital Electronics Signals and Switches: Is the transistor in the given figure considered ON or OFF?


  • Options
  • A. OFF
  • B. ON
  • C. Not enough information is provided.
    • Discuss
  • 6. The serial format for transmitting binary information uses:

  • Options
  • A. a single conductor
  • B. multiple conductors
  • C. infrared technology
  • D. fiber-optic
    • Discuss
  • 7. Determine the output voltage Vout for the circuit in the given figure.

    Digital Electronics Signals and Switches: Determine the output voltage Vout for the circuit in the given figure.


  • Options
  • A. ?0.5 V
  • B. 0 V
  • C. +5 V
  • D. +4.3 V
    • Discuss
  • 8. To forward bias a diode, a ________ potential is needed on the ________ and a ________ is needed on the ________.

  • Options
  • A. negative, cathode, positive, anode
  • B. negative, anode, positive, cathode
    • Discuss
  • 9. The units for the HIGH time for a periodic wave are ________.

  • Options
  • A. seconds
  • B. hertz
  • C. cycles
  • D. %
    • Discuss
  • 10. The frequency of the clock waveform is defined as the reciprocal of the clock period.

  • Options
  • A. True
  • B. False
    • Discuss

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