Sail E0 Webinar

General Knowledge > General Science

LOGIC GATES MCQs

Total Questions : 93 | Page 9 of 10 pages
Question 81. . From the truth table for a three-input NOR gate, what is the only condition of inputs A, B, and C that will make the output X high?
  1.    A = 1, B = 1, C = 1
  2.    A = 1, B = 0, C = 0
  3.    A = 0, B = 0, C = 1
  4.    A = 0, B = 0, C = 0
 Discuss Question
Answer: Option D. -> A = 0, B = 0, C = 0
Question 82. . The logic gate that will have a LOW output when any one of its inputs is HIGH is the:
  1.    NAND gate
  2.    AND gate
  3.    AND gate
  4.    OR gate
 Discuss Question
Answer: Option C. -> AND gate
Question 83. . If A is LOW or B is LOW or BOTH are LOW, then X is LOW. If A is HIGH and B is HIGH, then X is HIGH. These rules specify the operation of a(n) ________.
  1.    AND gate
  2.    OR gate
  3.    NAND gate
  4.    XOR gate
 Discuss Question
Answer: Option A. -> AND gate
Question 84. . A major advantage of ECL logic over TTL and CMOS is ________.
  1.    low power dissipation
  2.    high speed
  3.    both low power dissipation and high speed
  4.    neither low power dissipation nor high speed
 Discuss Question
Answer: Option B. -> high speed
Question 85. . The output of an XOR gate is HIGH only when ________.
  1.    both inputs = 0
  2.    both inputs = 1
  3.    the two inputs are unequal
  4.    both inputs are undefined
 Discuss Question
Answer: Option C. -> the two inputs are unequal
Question 86. . A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is a(n) ________.
  1.    AND gate
  2.    OR gate
  3.    NAND gate
  4.    XOR gate
 Discuss Question
Answer: Option D. -> XOR gate
Question 87. . When does the output of a NAND gate = 1?
  1.    Whenever a 0 is present at an input
  2.    Only when all inputs = 0
  3.    Whenever a 1 is present at an input
  4.    Only when all inputs = 1
 Discuss Question
Answer: Option A. -> Whenever a 0 is present at an input
Question 88. . The number of input combinations for a 4-input gate is ________.
  1.    9
  2.    8
  3.    15
  4.    16
 Discuss Question
Answer: Option D. -> 16
Question 89. . When does the output of a NOR gate = 0?
  1.    Whenever a 0 is present at an input
  2.    Only when all inputs = 0
  3.    Whenever a 1 is present at an input
  4.    Only when all inputs = 1
 Discuss Question
Answer: Option C. -> Whenever a 1 is present at an input
Question 90. . A 2-input gate that can be used to pass a digital waveform unchanged at certain times and inverted at other times is a(n) ________.
  1.    AND gate
  2.    OR gate
  3.    NAND gate
  4.    XOR gate
 Discuss Question
Answer: Option D. -> XOR gate

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0