10th Class Computers Science Question Bank

done More About Logic Gates Total Questions - 10

• question_answer1)
  A Logic gate is made of many transistors and resistors but every type of logic gate is denoted by its symbol. Which one of the following types of logic gate is given in the picture below?
  A)
   NAND                          done clear
  B)
   AND done clear
  C)
   NOT                            done clear
  D)
   XOR done clear
  E)
   None of these done clear
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• question_answer2)
  Many basic logic gates are combined to form a complex digital circuit for many operations in a microprocessor of a computer. Which one of the following is a type of expression on which a logic gate works?
  A)
   Quadratic expression      done clear
  B)
   Boolean expression done clear
  C)
   Binomial expression       done clear
  D)
   All of these done clear
  E)
   None of these done clear
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• question_answer3)
  The logic gate that will have HIGH or "1" at its output when any one of its inputs is HIGH is a(n):
  A)
   Or gate                         done clear
  B)
   And Gate done clear
  C)
   NOR Gate                     done clear
  D)
   NOT Gate done clear
  E)
   None of these done clear
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• question_answer4)
  Truth table of a logic gate shows the behavior of that logic gate when different inputs are feeded into it. Which one of the following types of logic gates has the following truth table?

  Input		Output
  A	B	Y = A.B
  0	0	0
  0	1	0
  1	0	0
  1	1	1

   
  A)
   OR Gate                       done clear
  B)
   AND Gate done clear
  C)
   NOR Gate                     done clear
  D)
   All of these done clear
  E)
   None of these done clear
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• question_answer5)
  A basic logic gate has one or two input in the form of logic low and logic high. Which one of the following types of logic gates is given in the figure below?
  A)
   OR Gate                       done clear
  B)
   AND Gate done clear
  C)
   XOR Gate                     done clear
  D)
   NOT Gate done clear
  E)
   None of these done clear
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• question_answer6)
  The output of a logic gate is obtained after the calculation made on the feeded input. Which one of the following types of logic gates has the following output expression?
  A)
   XOR Gate                     done clear
  B)
   XNOR Gate done clear
  C)
   NAND Gate                  done clear
  D)
   All of these done clear
  E)
   None of these done clear
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• question_answer7)
  An OR gate works on both input logic high or low or one input logic high and another at the same time is logic low. What will be the output of a OR gate if one input is low and one is high?
  A)
   Intermediate                  done clear
  B)
   Low done clear
  C)
   High                             done clear
  D)
   All of these done clear
  E)
   None of these done clear
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• question_answer8)
  For which one of the following Boolean expression the output is logic low if both inputs are logic low?
  A)
   Y = A.B                       done clear
  B)
   Y = A+B done clear
  C)
   Y = \[\overline{A+B}\]                done clear
  D)
   Both A and B done clear
  E)
   None of these done clear
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• question_answer9)
  A complex logic circuit is required to perform complex logical operations. Which one of the following types of logic symbol is given below?
  A)
   XOR Gate                     done clear
  B)
   NAND Gate done clear
  C)
   NOR Gate                     done clear
  D)
   All of these done clear
  E)
   None of these done clear
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• question_answer10)
  A logic gate is usually identified by its logic symbol and also it can be identified by its truth table. Which one of the following types of logic gates has the following truth table?

  Input		Output
  A	B	Y = A.B
  0	0	1
  0	1	1
  1	0	1
  1	1	0

   
  A)
   NAND Gate                  done clear
  B)
   XOR Gate done clear
  C)
   AND Gate                     done clear
  D)
   NOR Gate done clear
  E)
   None of these done clear
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