In this section of Digital Logic Design – Digital Electronics – Boolean Algebra and Logic Gates MCQs (Multiple Choice Questions and Answers),We have tried to cover the below lists of topics.All these MCQs will help you prepare for the various Competitive Exams and University Level Exams.

  1. Boolean Algebra MCQs
  2. Logic Gates MCQs
  3. Inverter or NOT Gate MCQs
  4. OR Gate MCQs
  5. AND Gate MCQs
  6. NOR Gate MCQs
  7. NAND Gate MCQs
  8. De Morgan’s Theorems MCQs
  9. Exclusive OR Gate MCQs
  10. Exclusive NOR Gate MCQs

PRACTICE IT NOW TO SHARPEN YOUR CONCEPT AND KNOWLEDGE

1. Boolean Algebra can be used to

  • Simplify any algebraic expressions
  • Minimize the number of switches in a circuits
  • Solve the mathematical problem
  • Perform arithmetic calculation

2. An inverter gates can be developed using

  • Two diodes
  • A resistance and capacitance
  • A transistor
  • An inductance and capacitance

3. if an input A is given to an inverter,the output will be

  • 1/A
  • 1
  • A
  • ‾A

4. The output of two input OR gate is high

  • . Only if both inputs are high
  • Only if both inputs are low
  • Only if one input is high and the other is low
  • If at least one of the inputs is low

5. the output of a two input AND gate is high

  • only if both the inputs are high
  • only if both the inputs are low
  • only if one inputs is high and other is low
  • if atleast one of the input is low

6. NAND gate means

  • inversion followed by And Gates
  • AND gates followed by an inverter
  • AND gate followed by an or gate
  • None of these

7. The out put of two input NAND gate is high

  • .only if both the inputs are high
  • only if both the inputs are low
  • only if one input is high and other input is low
  • if atleast one the inputs is low

8. A NOT gate means

  • Inversion followed by an OR gate
  • OR gate followed by an an inverter
  • Not gate followed by an OR gate
  • NAND gate followed by an OR gate

9. The output of two input NOR gate is high

  • Only if both the inputs are high
  • only if both the inputs are low
  • only if one of the input is high and the other is low
  • if atleast one the inputs is high

10. A Digital word has even parity

  • if it has even number of 1s
  • if it has even number of 0 s
  • if the decimal value of word is even
  • None of these

11. An XOR gate gives a high output

  • if there are odd number of 1s in the input
  • if these are even number of 1 s in the input
  • .if there are odd number of 0s in the input
  • if there are even numbers of 1 s in the input

12. An exclusive NOR gate is logically equal to

  • inverter followed by an XOR gate
  • NOT gate followed by an exclusive XOR gate
  • Exclusive OR gate followed by an inverter
  • Complement of a NOR gate

13. De Morgan’s theorem states that

  • ¯(A+B) = ¯A.¯B AND ¯(A.B) = ¯A.¯B
  • ¯(A+B) = ¯A+¯B AND ¯(A.B) = ¯( A).¯B
  • ¯( A+B)=¯( A).¯B AND ¯(A.B) = ¯A+¯B
  • ¯( A+B) = ¯A+¯B AND ¯(A.B)= ¯A+¯B

14. The logic expression AB+ (A.B) can be implemented by given inputs  And B to two input

  • NOR gate
  • Exclusive NOR gate
  • Exclusive OR gate
  • NAND gate

15. The logic expression AB+ ¯(A.B) can be implemented by given inputs A And B to two input

  • NOR Gate
  • Exclusive NOR gate
  • Exclusive OR gate
  • NAND Gate

16. The gate ideally suited for bit comparison is a

  • Two input exclusive NOR gate
  • Two input exclusive OR gate
  • Two input NAND date
  • Two input NOR gate

17. Two input Exclusive NOR gate gives high output

  • when one input is high and the other is low
  • only when the both the inputs are low
  • when the both the inputs are same
  • only when both the inputs are high
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