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ECE :: Digital Electronics

  1. If output of a logic gate is 1 when all its inputs are at logic 0. Then the gate is either
  2. A.
    a NAND or an EX-OR
    B.
    an OR or an EX-NOR
    C.
    an AND or an EX-OR
    D.
    a NOR or an EX-NOR

  3. Which of the following digital logic family has minimum power dissipation?
  4. A.
    TTL
    B.
    RTL
    C.
    DTL
    D.
    CMOS

  5. The Gray code for decimal number 6 is equivalent to
  6. A.
    1100
    B.
    1001
    C.
    0101
    D.
    0110

  7. The hexadecimal number 'A0' has the decimal value equivalent to
  8. A.
    80
    B.
    256
    C.
    100
    D.
    160

  9. EPROM contents can be erased by exposing it to
  10. A.
    Ultraviolet rays
    B.
    Infrared rays
    C.
    Burst of microwaves
    D.
    Intense heat radiations

  11. (734)8 = ( )16
  12. A.

    C 1 D

    B.

    D C 1

    C.

    1 C D

    D.

    1 D C


  13. The decimal equivalent of hex number 1A53 is
  14. A.
    6793
    B.
    6739
    C.
    6973
    D.
    6379

  15. What of the following is the binary equivalent of the decimal number 368
  16. A.
    101110000
    B.
    110110000
    C.
    111010000
    D.
    111100000

  17. The NAND gate output will be low if the two inputs are
  18. A.
    00
    B.
    01
    C.
    10
    D.
    11

  19. Any negative number is recognized by its
  20. A.
    MSB
    B.
    LSB
    C.
    Bits
    D.
    Nibble