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Digital Electronics ECE Questions And Answers

Here you can find Digital Electronics ECE Questions and Answers.

Why Digital Electronics ECE Questions and Answers Required?

In this Digital Electronics ECE Questions and Answers section you can learn and practice Digital Electronics ECE Questions and Answers to improve your skills in order to face technical inerview conducted by organisations. By Practicing these interview questions, you can easily crack any Competitive Exams interview.

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Digital Electronics ECE Questions and Answers

1. The output of a JK flipflop with asynchronous preset and clear inputs is ‘1’. The output can be changed to ‘0’ with one of the following conditions

Digital Electronics ECE Questions and Answers

2. A full adder logic circuit will have

Digital Electronics ECE Questions and Answers

3. For which of the following purpose Karnaugh map is used

Digital Electronics ECE Questions and Answers

4. Which of the following is a universal logic gate?

Digital Electronics ECE Questions and Answers

5. How many two input AND and OR gates are required

Digital Electronics ECE Questions and Answers

6. For JK flip flop with J=1, K=0, the output after clock pulse will be ________

Digital Electronics ECE Questions and Answers

7. To construct mod 30 counter __________ number of flip-flops are required

Digital Electronics ECE Questions and Answers

8. For which of the following two inputs, The NOR gate output will be low

Digital Electronics ECE Questions and Answers

9. The number 140 in octal is equivalent to

Digital Electronics ECE Questions and Answers

10. __________ is known as process of entering data into a ROM

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Home EngineeringElectronics & Communication EngineeringDigital Electronics

Digital Electronics - ECE Questions and Answers

This is the electronics and communication engineering questions and answers section on "Digital Electronics" with explanation for various interview, competitive examination and entrance test. Solved examples with detailed answer description, explanation are given and it would be easy to understand. Are you preparing for an upcoming Digital Electronics ECE competitive examination? Ok, start with a Digital Electronics ECE trial mock test series which will help you know what exactly you need to do. Attempt these set of Digital Electronics ECE questions and see how you are able to score in the Digital Electronics ECE Online Test. Digital Electronics ECE MCQ Questions and answers are updated on this page to help the postulates. Preparing according to the perfect planner job seeking aspirants can ace the Digital Electronics ECE Quiz. Because on our site we had enclosed Digital Electronics ECE questions in Multiple Choice Format.



Digital Electronics ECE Questions - Digital Electronics ECE Quiz Details

Online Test Name Digital Electronics
Exam Type Multiple Choice Questions
Category Electronics and Communication Engineering Quiz
Number of Questions 44 Questions


In this current web page, individuals can do a lot of practice with the help of provided Digital Electronics ECE MCQ Quiz Questions. More than 40 Digital Electronics ECE questions are uploaded on our allindiaexams.in site. People who had a dream to get a job in government sector must utilize this chance and enhance the better career. Competitors must and should prepare the Digital Electronics ECE Online Test to know the weaker areas.



Digital Electronics ECE Quiz Topics Covered

Digital Electronics ECE Quiz Topics are Number Systems, Memory Devices, Binary Codes, Logic Gates, Boolean Algebra, Minimization Techniques, Flip Flops, Logic Families, Arithmetic Circuits, Combinational Circuits, Counters, Shift Resistors, Display Devices & Systems, Analog to Digital and Digital to Analog Converters. To know more updates and Digital Electronics ECE questions and answers in the given topics stick to our web portal for more latest Digital Electronics ECE Quizzes.

Digital Electronics ECE MCQ Quiz Answers With Solutions

People can check the Digital Electronics ECE MCQ Quiz questions and answers in this article itself. Our team members had done a smart work that is candidates can check the Digital Electronics ECE questions and answers by clicking on the View Answer tab. Along with the Digital Electronics ECE MCQ Quiz Questions, people can know the Solutions for every question. Moreover, people no need to wait until the completion of the test. Learn and practice Digital Electronics ECE MCQ Questions and stay tuned to our webportal allindiaexams.in.

26. For which of the following code all successive numbers differ from their preceding number by a single bit
  • A. Binary code
  • B. BCD
  • C. Excess "“ 3
  • D. Gray
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Answer & Explanation

Answer: Option D

Explanation:

Gray code is an unweighted code. The most important characteristic of this code is that only a single bit change occurs when going from one code number to next

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27. Which of the following gates are required to build a half adder
  • A. EX-OR gate and NOR gate
  • B. EX-OR gate and OR gate
  • C. EX-OR gate and AND gate
  • D. Four NAND gates.
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Answer & Explanation

Answer: Option C

Explanation:

The gates required to build a half adder are EX-OR gate and AND gate The below figure shows the logic diagram of half adder.


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28. Which of the following is the simplified Boolean algebra version of (x+y)(x+z)
  • A. X
  • B. x + x(y + z)
  • C. x(1 + yz)
  • D. x + yz
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Answer & Explanation

Answer: Option D

Explanation:

(x+y)(x+z) = xx+xz+yx+yz=x+xz+yx+yz


(since xx=x)

X(1+z)+xy+yz= x+ xy + yz (since 1+z=1)

X(1+y) + yz = x+yz (since 1+y =1)

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29. The 2's complement of the number 1101101 is
  • A. 0101110
  • B. 0111110
  • C. 0110010
  • D. 0010011
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Answer & Explanation

Answer: Option D

Explanation:

1's complement of the 1101101 is 0010010 2's complement of the number is 1's complement +1 = 0010010 +1 = 0010011

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30. For which of the following the speed of conversion is maximum
  • A. Successive-approximation A/D converter
  • B. Parallel-comparative A/D converter
  • C. Counter ramp A/D converter
  • D. Dual-slope A/D converter
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Answer & Explanation

Answer: Option B

Explanation:

Parallel-comparative A/D converter

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