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MCQs

Total Questions : 457 | Page 20 of 46 pages
Question 191. Conversion of an octal number 1438 to its decimal number is
  1.    9010
  2.    97110
  3.    9910
  4.    10710
  5.    None of the above
 Discuss Question
Answer: Option C. -> 9910
Question 192. How many inputs signals can a gate have?
  1.    one
  2.    more than one
  3.    two only
  4.    both (a) and (b)
  5.    None of the above
 Discuss Question
Answer: Option D. -> both (a) and (b)
Question 193. A combinational logic circuit which is used when it is desired to send data from two or more source through a single transmission line is known as
  1.    encoder
  2.    decoder
  3.    multiplexer
  4.    demultiplexer
  5.    None of the above
 Discuss Question
Answer: Option C. -> multiplexer
Question 194. Conversion of binary number 10010012 to hexadecimal is
  1.    4016
  2.    3916
  3.    4916
  4.    4216
  5.    None of the above
 Discuss Question
Answer: Option C. -> 4916
Question 195. What logic function is obtained by adding an inverter to the inputs of an AND gate?
  1.    OR
  2.    NAND
  3.    XOR
  4.    NOR
  5.    None of the above
 Discuss Question
Answer: Option D. -> NOR
Question 196. Which logic family dissipates the minimum power?
  1.    DTL
  2.    TTL
  3.    ECL
  4.    CMOS
  5.    None of the above
 Discuss Question
Answer: Option D. -> CMOS
Question 197. A bus is a group of _____ carrying digital signals.
  1.    wires
  2.    gates
  3.    transistors
  4.    registers
  5.    None of the above
 Discuss Question
Answer: Option A. -> wires
Question 198. The simplified form of the Boolean expression (X + Y + XY)(X + Z) is
  1.    X + Y + Z
  2.    XY + YZ
  3.    X + YZ
  4.    XZ + Y
  5.    None of the above
 Discuss Question
Answer: Option C. -> X + YZ
Question 199. De Morgan's first theorem says that a NOR gate is equivalent to a bubbled _____ gate.
  1.    AND
  2.    XAND
  3.    XOR
  4.    NOR
  5.    None of the above
 Discuss Question
Answer: Option A. -> AND
Question 200. Addition of 102 and 112 is
  1.    1002
  2.    1012
  3.    1112
  4.    1102
  5.    None of the above
 Discuss Question
Answer: Option B. -> 1012

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