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  1. Find the output voltage for 011100 in a 6 bit R-2R ladder D/A converter has a reference voltage of 6.5 V.

  2. A.
    6.4 V
    B.
    2.84 V
    C.
    0.1 V
    D.
    8 V

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  3. Binary number 1101 is equal to octal number

  4. A.
    17
    B.
    16
    C.
    15
    D.
    14

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  5. Logic analyser is

  6. A.
    a multichannel oscilloscope
    B.
    similar to logic pulser
    C.
    similar to current tracer
    D.
    none of the above

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  7. The minimized version of logic circuit in the given figure is

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  9. In the given figure shows a negative logic AND gate. If positive logic is used this gate is equivalent to

  10. A.
    AND gate
    B.
    OR gate
    C.
    NOR gate
    D.
    NAND gate

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  11. The function Y = A B C + AB C + A B C + A BC is to be realized using discrete gates. The inputs available are A, B, C. We need a total of

  12. A.
    8 gates
    B.
    6 gates
    C.
    10 gates
    D.
    5 gates

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  13. A 10 bit D/A converter gives a maximum output of 10.23 V. The resolution is

  14. A.
    10 mV
    B.
    20 mV
    C.
    15 mV
    D.
    25 mV

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  15. As applied to a flip flop the word edge triggered's means

  16. A.
    flip flop can change state when clock transition occurs
    B.
    flip flop can change state when clock signal goes from LOW to HIGH only
    C.
    flip flop can change state when clock signal goes from HIGH to LOW only
    D.
    none of the above

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  17. A NOR gate is a combination of

  18. A.
    OR gate and AND gate
    B.
    AND gate and NOT gate
    C.
    OR gate and NOT gate
    D.
    two NOT gates

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  19. The 2's complement representation of - 17 is

  20. A.
    01110
    B.
    01111
    C.
    11110
    D.
    10001

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