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Logic Gates and Combination of Gates

Logic gates including AND, OR, NOR, NAND, and their combinations with truth tables and Boolean expressions

10 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

If OR gate has 6 inputs, then the number of input words in the truth table is

  1. 8
  2. 64
  3. 16
  4. 4
  5. 128
Question 2 Multiple Choice (Single Answer)

Which of the following digital logic gates is build by using single transistor?

  1. FOR
  2. OR
  3. NOT
  4. AND
  5. NAND
Question 3 Multiple Choice (Single Answer)

Which of the following gates has the exact inverse output of the OR gate for all possible input combinations?

  1. NOT
  2. NOR
  3. AND
  4. NAND
  5. OR gate
Question 4 Multiple Choice (Single Answer)

The logic gate that will have HIGH or "1" at its output when any one (or more) of its inputs is HIGH is a(n):

  1. EXOR gate
  2. AND gate
  3. OR gate
  4. NOR gate
  5. NOT gate
Question 5 Multiple Choice (Single Answer)

How many input possibilities are there for a 3-input NOR gate?

  1. 64
  2. 4
  3. 8
  4. 16
  5. 32
Question 6 Multiple Choice (Single Answer)

What will be the value of three inputs A, B, and C, of AND gate, when output obtained is high?

  1. A = 1, B = 1, C = 0
  2. A = 1, B = 0, C = 1
  3. A = 0, B = 0, C = 0
  4. A = 0, B = 0, C = 1
  5. A = 1, B = 1, C = 1
Question 7 Multiple Choice (Single Answer)

For a 3-input AND gate, write the Boolean expression.

  1. X = AB
  2. X = ABC
  3. X = A + B + C
  4. X = A + B
  5. X = A + B + C + D
Question 8 Multiple Choice (Single Answer)

Which of the following is a universal logic gate?

  1. OR
  2. NAND
  3. NOT
  4. AND
  5. EX-OR
Question 9 Multiple Choice (Single Answer)

Logically, the output of a NOR gate would have the same Boolean expression as a(n)_________.

  1. NAND gate
  2. OR gate by an inverter
  3. AND gate
  4. NOR gate
  5. NOT gate
Question 10 Multiple Choice (Single Answer)

What will be the value of three inputs A, B and C of OR gate, when output obtained is low?

  1. A = 0, B = 0, C = 0
  2. A = 1, B = 0, C = 1
  3. A = 0, B = 0, C = 1
  4. A = 1, B = 0, C = 0
  5. A = 1, B = 1, C = 1
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