Q.1

Which of the following logic families has the highest noise immunity?

  • RTL
  • DTL
  • TTL
  • HTL
  • None of the above
Q.2

When a transistor is cut off or saturated, transistor _____ have almost no effect

  • wave
  • variations
  • stage
  • circuits
  • None of the above
Q.3

The maximum number of TTL loads that a TTL device can drive reliably over the specified temperature range is

  • fanout
  • bipolar
  • chip
  • universal logic circuit
  • None of the above
Q.4

The memory cell of a dynamic RAM is simpler and smaller than the memory cell of a _____ RAM.

  • volatile
  • static
  • semiconductor
  • bipolar
  • None of the above
Q.5

Conversion of binary number 10100002 to an octal number is

  • 1198
  • 1018
  • 1118
  • 1208
  • None of the above
Q.6

Conversion of binary number 1100012 to its decimal number is

  • 2710
  • 4910
  • 3910
  • 5010
  • None of the above
Q.7

The 2's compliment of binary number 010111.is

  • 101001.1100
  • 101000.0100
  • 010111.0011
  • 101000.0011
  • None of the above
Q.8

Conversion of an octal number 1108 to its decimal number is

  • 7010
  • 7210
  • 7310
  • 11010
  • None of the above
Q.9

The hexadecimal number system is widely used in analyzing and programming ______

  • registers
  • chips
  • microprocessors
  • vacuum tube
  • None of the above
Q.10

Which of the following TTL subfamily is the fastest

  • standard TTL
  • high-speed TTL
  • schottky TTL
  • low-speed TTL
  • None of the above
Q.11

De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.

  • AND
  • XAND
  • XOR
  • NOR
  • None of the above
Q.12

In which code the successive code characters differ in only one bit position?

  • gray code
  • excess 3 code
  • 8421 code
  • algebraic code
  • None of the above
Q.13

Which of the following flip-flops is free from race around problem?

  • T flip-flop
  • SR flip-flop
  • master slave JK flip-flop
  • All of the above
  • None of the above
Q.14

Conversion of binary number 1010000101112 to hexadecimal number is

  • D8F916
  • A8B916
  • A1716
  • D9F816
  • None of the above
Q.15

_____dominates the LSI field, and _____ is used extensively where lowest power consumption is necessary.

  • NMOS, PMOS
  • PMOS, CMOS
  • NMOS, CMOS
  • MOSFET, PMOS
  • None of the above
Q.16

Conversion of binary number 10010012 to hexadecimal is

  • 4016
  • 3916
  • 4916
  • 4216
  • None of the above
Q.17

Which logic family dissipates the minimum power?

  • DTL
  • TTL
  • ECL
  • CMOS
  • None of the above
Q.18

The NOR gate is logically equivalent to an OR gate followed by an _____

  • AND
  • XAND
  • XOR
  • inverter
  • None of the above
Q.19

The dynamic race hazard problem occurs in

  • combinational circuits only
  • sequential circuits only
  • both combinational and sequential circuits
  • none of the combinational and sequential circuits
  • None of the above
Q.20

Multiplication of 1112 by 1012 is

  • 1100112
  • 1000112
  • 1111002
  • 0001012
  • None of the above
Q.21

For what logic gate the outputs in complement of the input?

  • NOT
  • AND
  • OR
  • XOR
  • None of the above
Q.22

Conversion of an octal number 1368 to hexadecimal number is

  • 7E16
  • 5E16
  • 5A16
  • 5D16
  • None of the above
Q.23

A diagram that illustrates the ore (Logic) of functions in a progran called a

  • Flowchart
  • Sequence of steps
  • Direction of flow
  • All of the above
  • None of the above
Q.24

What is the 2's complement ofnumber?

  • 1100 1010 1100 1011
  • 1100 1010 0110 0011
  • 1100 1010 0110 0100
  • 1100 1010 1111 1111
  • None of the above
Q.25

Express -7 as 16-bit signed binary numbers.

  • 0000 0000 0000 0111
  • 1000 0000 0000 0111
  • . 0111 0000 0000 0001
  • 0111 0000 0000 0000
  • None of the above
Q.26

Conversion of hexadecimal number 6B216 to it's binary number equivalent is

  • 11110001101112
  • 0110101100102
  • 01100110011112
  • 111111112
  • None of the above
Q.27

A byte is consist of _____ bits

  • two
  • four
  • eight
  • ten
  • None of the above
Q.28

What is the 1's complement ofnumber?

  • 1111 0000 0010 1101
  • 1111 0000 1101 0010
  • 1111 1100 1010 1100
  • 1001 0010 1010 1100
  • None of the above
Q.29

Conversion of an octal number 478 to its binary number is

  • 1100112
  • 1001112
  • 1100112
  • 11110112
  • None of the above
Q.30

The OR gate has two or more input signals. If any input is _____ the output is high.

  • low
  • high
  • 0
  • All of the above
  • None of the above
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