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.

21. For which of the following digital logic family has the lowest propagation delay time

A. ECL
B. TTL
C. CMOS
D. PMOS

Answer & Explanation

Answer: Option A

Explanation:

Lowest propagation delay time is possible in ECL because the transistors that are used in difference amplifier configuration, which are never driven into saturation and thereby the storage time is eliminated

Workspace

Report Error

22. Which of the following shows the equivalence of DeMorgan's first theorem

A. OR gate and Exclusive OR gate
B. NOR gate and Bubbled AND gate
C. NOR gate and NAND gate
D. NAND gate and NOT gate

Answer & Explanation

Answer: Option B

Explanation:

DeMorgan's first theorem shows the equivalence of NOR gate and Bubbled AND gate Logic diagrams for De Morgan's First Theorem is shown in figure below

Workspace

Report Error

23. Which of the following Signed Binary Number is equal to -8

A. 10001000
B. 00001000
C. 10000000
D. 11000000

Answer & Explanation

Answer: Option A

Explanation:

To represent negative numbers in the binary system, Digit 0 is used for the positive sign and 1 for the negative sign. The MSB is the sign bit followed by the magnitude bits

-8 = 1000 1000

First four digits represents Sign & next four digits represent Magnitude

Workspace

Report Error

24. Which of the memory is known as a volatile memory

A. ROM
B. RAM
C. PROM
D. EEPROM

Answer & Explanation

Answer: Option B

Explanation:

RAM is known as Volatile memory

Volatile memory means the contents of the RAM get erased as soon as the power goes off

Workspace

Report Error

25. If the input to T-flipflop is 100 Hz signal, the final output of the three T- flipflops in cascade is

A. 1000 Hz
B. 500 Hz
C. 333Hz
D. 12.5Hz

Answer & Explanation

Answer: Option D

Explanation:

If the input to T-flip-flop is 100 Hz signal, the final output of the three Tflip- flops in cascade is 12.5 Hz The final output of the three T-flip-flops in cascade is T = Frequency / 2N= 100/23= 12.5 Hz