Logic Gates and Networks MCQ

Test your knowledge with important Logic Gates and Networks MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Logic Gates and Networks MCQs at Bissoy

• The gates required to build a half adder are __________
  ক

  EX-OR gate and NOR gate

  খ

  EX-OR gate and OR gate

  গ

  EX-OR gate and AND gate

  ঘ

  EX-NOR gate and AND gate
• Which of the following are known as universal gates?
  ক

  NAND & NOR

  খ

  AND & OR

  গ

  XOR & OR

  ঘ

  EX-NOR & XOR
• How many two input AND gates and two input OR gates are required to realize Y = BD + CE + AB?
  ক

  3, 2

  খ

  4, 2

  গ

  1, 1

  ঘ

  2, 3
• A full adder logic circuit will have __________
  ক

  Two inputs and one output

  খ

  Three inputs and three outputs

  গ

  Two inputs and two outputs

  ঘ

  Three inputs and two outputs
• A universal logic gate is one which can be used to generate any logic function. Which of the following is a universal logic gate?
  ক

  OR

  খ

  AND

  গ

  XOR

  ঘ

  NAND
• How many two-input AND and OR gates are required to realize Y = CD+EF+G?
  ক

  2, 2

  খ

  2, 3

  গ

  3, 3

  ঘ

  3, 2
• The NOR gate output will be high if the two inputs are __________
  ক

  00

  খ

  01

  গ

  10

  ঘ

  11
• How many AND gates are required to realize Y = CD + EF + G?
  ক

  4

  খ

  5

  গ

  3

  ঘ

  2
• The following switching functions are to be implemented using a decoder: f1 = ∑m(1, 2, 4, 8, 10, 14) f2 = ∑m(2, 5, 9, 11) f3 = ∑m(2, 4, 5, 6, 7) The minimum configuration of decoder will be __________
  ক

  2 to 4 line

  খ

  3 to 8 line

  গ

  4 to 16 line

  ঘ

  5 to 32 line
• The code where all successive numbers differ from their preceding number by single bit is __________
  ক

  Alphanumeric Code

  খ

  BCD

  গ

  Excess 3

  ঘ

  Gray
• How many NAND circuits are contained in a 7400 NAND IC?
  ক

  1

  খ

  2

  গ

  4

  ঘ

  8
• Logic gate circuits contain predictable gate functions that open theirs ____________
  ক

  Outputs

  খ

  Inputs

  গ

  Pre-state

  ঘ

  Impedance state
• If we use an AND gate to inhibit a signal from passing one of the inputs must be ___________
  ক

  LOW

  খ

  HIGH

  গ

  Inverted

  ঘ

  Floating
• The dependency notation “>=1” inside a block stands for which operation?
  ক

  OR

  খ

  XOR

  গ

  AND

  ঘ

  XNOR
• The AND function can be used to ___________ and the OR function can be used to _____________
  ক

  Enable, disable

  খ

  Disable, enable

  গ

  Synchronize, energize

  ঘ

  Detect, invert
• The basic logic gate whose output is the complement of the input is the ___________
  ক

  OR gate

  খ

  AND gate

  গ

  INVERTER gate

  ঘ

  XOR gate
• Exclusive-OR (XOR) logic gates can be constructed from what other logic gates?
  ক

  OR gates only

  খ

  AND gates and NOT gates

  গ

  AND gates, OR gates, and NOT gates

  ঘ

  OR gates and NOT gates
• Which input values will cause an AND logic gate to produce a HIGH output?
  ক

  At least one input is HIGH

  খ

  At least one input is LOW

  গ

  All inputs are HIGH

  ঘ

  All inputs are LOW
• How many truth table entries are necessary for a four-input circuit?
  ক

  4

  খ

  8

  গ

  12

  ঘ

  16
• A single transistor can be used to build which of the following digital logic gates?
  ক

  AND gates

  খ

  OR gates

  গ

  NOT gates

  ঘ

  NAND gates