Quiz  /  Digital Electronics MCQ

  • 1. 
    The following truth table corresponds to the logic gate

  • NAND
  • OR
  • AND
  • XOR

  • 2. 
    Boolean Algebra is essentially based on

  • Truth
  • Logic
  • Symbol
  • Numbers

  • 3. 
    The logic behind NOR gate is that it gives

  • HIgh output when both the inputs are low
  • Low output when both the inputs are low
  • HIgh output when both the inputs are high
  • None of the above

  • 4. 
    A logic gate is an electronic circuit which

  • Makes logic decisions
  • Allows electrons flow only in one direction
  • Woks binary algebra
  • Alternates between 0 and 1 values

  • 5. 
    How many NAND gates are used to form an AND gate?

  • 1
  • 2
  • 3
  • 4

  • 6. 
    Which logic gate is represented by the following combination of logic gates?

  • OR
  • NAND
  • AND
  • NOR

  • 7. 
    The output of OR gate is 1

  • If both inputs are zero
  • If either or both inputs are 1
  • Only if both inputs are 1
  • If either input is zero

  • 8. 
    Which of the following logic gate is a universal gate?

  • OR
  • NOT
  • AND
  • NOR

  • 9. 
    A gate in which all the inputs must be low to get a high output is

  • NAND gate
  • Inverter
  • NOR gate
  • AND gate

  • 10. 
    The outputs of a NAND gate is 0

  • If both inputs are 0
  • If one input is 0 and the other input is 1
  • If both inputs are 1
  • If both inputs are 1 or one of the inputs is 1 and the other one is 0
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