digital-electronics-mcqs - Set (4)

Correct Answer: Orange && Worng Answer: Red

1. Which of the following is waveshaping circuit.

  • (A). Clamper
  • (B). Clipper
  • (C). Both (a) and (b)
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    2. Schemitt trigger generates square wave from :

  • (A). Cosine wave i/p
  • (B). Sine wave i/p
  • (C). Triangular wave
  • (D). None
    • View Answer

    Explanation: Not Avilable

    3. A differentiator consists of ______

  • (A). Resistor
  • (B). OP-AMP
  • (C). Capacitor
  • (D). All of the above
    • View Answer

    Explanation: Not Avilable

    4. A decoder has n-input lines and ______ output lines.

  • (A). Maximum 2n
  • (B). Minimum 2n
  • (C). Maximum n
  • (D). Maximum n2
    • View Answer

    Explanation: Not Avilable

    5. Magnetic tapes wave used to record.

  • (A). Sound
  • (B). Video
  • (C). Computer Data
  • (D). All of the above
    • View Answer

    Explanation: Not Avilable

    6. Which of the following statement is correct for monostable multivibrator .

  • (A). It requires one input pulse
  • (B). It requires two input pulse
  • (C). It does not requires any input pulse
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    7. In multivibrator, transistor works in ______ region.

  • (A). Cut-off
  • (B). Active
  • (C). Saturation
  • (D). Both (a) and (c)
    • View Answer

    Explanation: Not Avilable

    8. 555 timer consist of ______ comparators.

  • (A). Two
  • (B). Three
  • (C). Four
  • (D). Five
    • View Answer

    Explanation: Not Avilable

    9. In which of the following memory, the contents of memory location do not change with time

  • (A). Static memory
  • (B). Dynamic memory
  • (C). Both (a) and (b)
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    10. Which of the following memory is programmed.

  • (A). ROM
  • (B). PROM
  • (C). EPROM
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    11. Which of the following is not a sequential memory

  • (A). CCD
  • (B). RAM
  • (C). Shift register
  • (D). All of the above
    • View Answer

    Explanation: Not Avilable

    12. Which of the following is correct statement for magnetic core memory

  • (A). It is non-volatile memory
  • (B). This memory can be read only
  • (C). Both (a) and (b)
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    13. Which of the following is optical storage

  • (A). CD-ROM
  • (B). RAM
  • (C). Shift register
  • (D). All of the above
    • View Answer

    Explanation: Not Avilable

    14. In n-bit weighted resistor D/A converter, number of resistors required is ______

  • (A). n
  • (B). 2n
  • (C). n+1
  • (D). n-1
    • View Answer

    Explanation: Not Avilable

    15. Which of the following is faster A/D converter

  • (A). Parallel comparator
  • (B). Counting type
  • (C). Dual slope type
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    16. For an n-bit A/D converter, the range of analog voltage is represented in 2n intervals. This process is called ______

  • (A). Enconding
  • (B). Sampling
  • (C). Quantization
  • (D). Holding
    • View Answer

    Explanation: Not Avilable

    17. The screen of CRT is coated with ______

  • (A). Silver
  • (B). Phosphor
  • (C). Silicon
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    18. Diameter of basic CD-ROM is ______

  • (A). 120 mm
  • (B). 120 cm
  • (C). 12 mm
  • (D). 18 mm
    • View Answer

    Explanation: Not Avilable

    19. Which of the following statement is correct for Hard disc.

  • (A). Information is stored on upper side of disc
  • (B). Information is stored on lower side of disc
  • (C). Information is stored on both side of disc
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

    20. Which of the following requires a capacitor to store binary data.

  • (A). SRAM
  • (B). DRAM
  • (C). Both (a) and (b)
  • (D). None of these
    • View Answer

    Explanation: Not Avilable

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