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MCQs

Total Questions : 148 | Page 14 of 15 pages
Question 131. The output will be logic ‘1’ only if all the inputs are ‘0’. Which gate must be used to execute this condition?
  1.    AND gate
  2.    NAND gate
  3.    NOR gate
  4.    EX-OR gate
 Discuss Question
Answer: Option B. -> NAND gate
Answer: (b).NAND gate
Question 132. 1001 is a data presented on a set of binary coded decimal output lines. What would be the decimal equivalent of this number in the case of negative logic?
  1.    9
  2.    6
  3.    1
  4.    8
 Discuss Question
Answer: Option B. -> 6
Answer: (b).6
Question 133. INHIBIT gate is ________ gate with an inhibiting input.
  1.    AND gate
  2.    OR gate
  3.    EX-OR gate
  4.    NOT gate
 Discuss Question
Answer: Option B. -> OR gate
Answer: (b).OR gate
Question 134. In TTL logic, the input transistor has a number of ________ equal to the desired fan-in of the circuit.
  1.    Base
  2.    Collect
  3.    Emitter
  4.    Gate
 Discuss Question
Answer: Option C. -> Emitter
Answer: (c).Emitter
Question 135. The basic function of TTL gate is which of the following functions?
  1.    AND
  2.    OR
  3.    NOR
  4.    NAND
 Discuss Question
Answer: Option D. -> NAND
Answer: (d).NAND
Question 136. Which of the following is the most widely employed logic family?
  1.    Emitter-coupled logic
  2.    Transistor-transistor logic
  3.    CMOS logic family
  4.    NMOS logic
 Discuss Question
Answer: Option B. -> Transistor-transistor logic
Answer: (b).Transistor-transistor logic
Question 137. Which of the following is the propagation delay of TTL circuits?
  1.    1 s
  2.    1 ms
  3.    1 ns
  4.    1 ps
 Discuss Question
Answer: Option C. -> 1 ns
Answer: (c).1 ns
Question 138. The standard TTL gates are marketed as _______ series.
  1.    80
  2.    82
  3.    74
  4.    08
 Discuss Question
Answer: Option C. -> 74
Answer: (c).74
Question 139. ESCA can identify elements in the periodic table above which of the following?
  1.    Carbon
  2.    Boron
  3.    Helium
  4.    Potassium
 Discuss Question
Answer: Option C. -> Helium
Answer: (c).Helium
Question 140. ESCA gives sufficient chemical information up to a depth about ________ armstrong in oxide.
  1.    5-20
  2.    15-40
  3.    40-100
  4.    100-200
 Discuss Question
Answer: Option B. -> 15-40
Answer: (b).15-40

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