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MCQs

Total Questions : 457 | Page 27 of 46 pages
Question 261. In which code the successive code characters differ in only one bit position?
  1.    gray code
  2.    excess 3 code
  3.    8421 code
  4.    algebraic code
  5.    None of the above
 Discuss Question
Answer: Option A. -> gray code
Question 262. With an RS latch a high S and low R sets the output to _____ ; a low S and a high R _____ the output to low.
  1.    No change, set
  2.    Race, high
  3.    high, reset
  4.    set, reset
  5.    None of the above
 Discuss Question
Answer: Option C. -> high, reset
Question 263. A _____ TTL device can sink up to 16mA and can source up to 400 MA.
  1.    Low-power
  2.    high-power
  3.    Standard
  4.    Schottky
  5.    None of the above
 Discuss Question
Answer: Option C. -> Standard
Question 264. The output 0 and 1 levels for TTL logic family is approximately
  1.    0.1 and 5 V
  2.    0.6 and 3.5 V
  3.    0.9 and 1.75V
  4.    -1.75 and -0.9 V
  5.    None of the above
 Discuss Question
Answer: Option B. -> 0.6 and 3.5 V
Question 265. Flip-flop outputs are always
  1.    complimentary
  2.    the same
  3.    independent of each other
  4.    same as inputs
  5.    None of the above
 Discuss Question
Answer: Option A. -> complimentary
Question 266. What is the 2's complement of 0011 0101 1001 1100 number?
  1.    1100 1010 1100 1011
  2.    1100 1010 0110 0011
  3.    1100 1010 0110 0100
  4.    1100 1010 1111 1111
  5.    None of the above
 Discuss Question
Answer: Option C. -> 1100 1010 0110 0100
Question 267. 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 268. 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 269. 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 270. 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

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