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MCQs

Total Questions : 457 | Page 7 of 46 pages
Question 61. In Boolean algebra, the bar sign (-) indicates ___________.
  1.    None of these
  2.    NOT operation
  3.    OR operation
  4.    AND operation
 Discuss Question
Answer: Option B. -> NOT operation
Question 62. Among the logic families, the family which can be used at very high frequency greater than 100 MHz in a 4 bit synchronous counter is
  1.    ECL
  2.    TTLAS
  3.    TTLLS
  4.    CMOS
 Discuss Question
Answer: Option A. -> ECL
Question 63. The inputs of a NAND gate are connected together. The resulting circuit is ___________.
  1.    None of these
  2.    OR gate
  3.    NOT gate
  4.    AND gate
 Discuss Question
Answer: Option C. -> NOT gate
Question 64. NAND. gates are preferred over others because these
  1.    provide maximum density in a chip.
  2.    consume least electronic power
  3.    can be used to make any gate
  4.    have lower fabrication area
 Discuss Question
Answer: Option C. -> can be used to make any gate
Question 65. Which is the correct order of sequence for representing the input values in K-map?
  1.    (00, 01, 10, 11)
  2.    (00, 10, 11, 01)
  3.    (00, 01, 11, 10)
  4.    (00, 10, 01, 11)
 Discuss Question
Answer: Option C. -> (00, 01, 11, 10)
Question 66. Digital computers are more widely used as compared to analog computers, because they are
  1.    Easier to maintain
  2.    Useful over wider ranges of problem types
  3.    Less expensive
  4.    Always more accurate and faster
 Discuss Question
Answer: Option B. -> Useful over wider ranges of problem types
Question 67. Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?
  1.    Two’s complement only
  2.    All three representations
  3.    Two’s complement and one’s complement only
  4.    Sign and magnitude and one’s complement only
 Discuss Question
Answer: Option B. -> All three representations
Question 68. Which of the following gate is a two-level logic gate
  1.    EXCLUSIVE OR gate
  2.    OR gate
  3.    NOT gate
  4.    NAND gate
 Discuss Question
Answer: Option A. -> EXCLUSIVE OR gate
Question 69. Excess-3 code is known as
  1.    Self-complementing code
  2.    Algebraic code
  3.    Cyclic redundancy code
  4.    Weighted code
 Discuss Question
Answer: Option A. -> Self-complementing code
Question 70. When an input signal 1 is applied to a NOT gate, the output is ___________.
  1.    Either 0 & 1
  2.    None of these
  3.    1
 Discuss Question
Answer: Option A. -> Either 0 & 1

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