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MCQs

Total Questions : 457 | Page 5 of 46 pages
Question 41. An OR gate has 6 inputs. The number of input words in its truth table are
  1.    128
  2.    6
  3.    64
  4.    32
 Discuss Question
Answer: Option C. -> 64
Question 42. In which of the following base systems is 123 not a valid number?
  1.    Base 8
  2.    Base 10
  3.    Base 16
  4.    Base 3
 Discuss Question
Answer: Option D. -> Base 3
Question 43. The number of Boolean functions that can be generated by n variables is equal to
  1.    22n
  2.    2n-1
  3.    2n
  4.    2n
 Discuss Question
Answer: Option A. -> 22n
Question 44. Positive logic in a logic circuit is one in which
  1.    logic 0 and 1 are represented by 0 and positive voltage respectively
  2.    logic 0 voltage level is lower than logic 1 voltage level.
  3.    logic 0 and, -1 are represented by negative and positive voltages respectively
  4.    logic 0 voltage level is higher than logic 1 voltage level
 Discuss Question
Answer: Option B. -> logic 0 voltage level is lower than logic 1 voltage level.
Question 45. Digital circuit can be made by the repeated use of ___________
  1.    NOT gates
  2.    None of these
  3.    OR gates
  4.    NAND gates
 Discuss Question
Answer: Option D. -> NAND gates
Question 46. "What would happen, if smaller logic modules are utilized for performing logical functions associated with FPGA? A. Propagation delay will increase B. FPGA area will increase C. Wastage of logic modules will not be prevented D. Number of interconnected paths in device will decrease"
  1.    A & B
  2.    C & D
  3.    B & C
  4.    A & D
 Discuss Question
Answer: Option A. -> A & B
Question 47. Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?
  1.    State Minimization
  2.    State Assignment
  3.    State Reduction
  4.    State Evaluation
 Discuss Question
Answer: Option B. -> State Assignment
Question 48. A debouncing circuit is
  1.    A latch
  2.    A monostable MV
  3.    A bistable MV
  4.    An astable MV
 Discuss Question
Answer: Option A. -> A latch
Question 49. The binary number 10101 is equivalent to decimal number ___________.
  1.    27
  2.    12
  3.    21
  4.    19
 Discuss Question
Answer: Option C. -> 21
Question 50. Most of the digital computers do not have floating point hardware because
  1.    Floating point hardware is costly
  2.    It is not possible to perform floating point addition by hardware
  3.    It is slower than software
  4.    Of no specific reason
 Discuss Question
Answer: Option A. -> Floating point hardware is costly

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