Digital Electronics MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Digital Electronics, a fundamental topic in the field of Electronics and Communication Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Digital Electronics MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Digital Electronics mcq questions that explore various aspects of Digital Electronics problems. Each MCQ is crafted to challenge your understanding of Digital Electronics principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Electronics and Communication Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Digital Electronics MCQs are your pathway to success in mastering this essential Electronics and Communication Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Digital Electronics. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Digital Electronics knowledge to the test? Let's get started with our carefully curated MCQs!

Digital Electronics MCQs | Page 44 of 117

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Q431.
A 4 bit synchronous counter uses flip flops with a delay time of 15 ns each. The time required for change of state is

a.

15 ns

b.

30 ns

c.

45 ns

d.

60 ns

Discuss
Answer: (a).15 ns
Q432.
What do the contents of instruction register specify?

a.

Operand for the instruction being executed

b.

Op code for the instruction being executed

c.

Op code for the instruction to be executed next

d.

Operand for the instruction to be executed next

Discuss
Answer: (b).Op code for the instruction being executed
Q433.
In the decimal number 27, the digital 2 represents

a.

2

b.

20

c.

0.2

d.

200

Discuss
Answer: (b).20
Q434.
Which of the following is true?

a.

SOP is a two level logic

b.

POS is a two level logic

c.

Both SOP and POS are two level logic

d.

Hybrid function is two level logic

Discuss
Answer: (c).Both SOP and POS are two level logic
Q435.
E7F6₁₆ = __________ .

a.

600000₁₀

b.

59382₁₀

c.

9382₁₀

d.

382₁₀

Discuss
Answer: (b).59382₁₀
Q436.
What is the normal range of analog input voltage?

a.

0 to 1 V

b.

0 to 5 V

c.

5 to 15 V

d.

15V to 30V

Discuss
Answer: (b).0 to 5 V
Q437.
Assertion (A): The propagation delay in ECL is minimum

Reason (R): Transistors used in ECL switch between active and cutoff regions.

a.

Both A and R are correct and R is correct explanation of A

b.

Both A and R are correct but R is not correct explanation of A

c.

A is true, R is false

d.

A is false, R is true

Discuss
Answer: (a).Both A and R are correct and R is correct explanation of A
Q438.
For the design of a sequential circuit having 9 states, minimum number of memory elements required is

a.

3

b.

4

c.

5

d.

9

Discuss
Answer: (b).4
Q439.
ICs are

a.

analog

b.

digital

c.

both analog and digital

d.

mostly analog

Discuss
Answer: (c).both analog and digital
Q440.
A 6 bit DAC uses binary weighted resistors. If MSB resistor is 20 k ohm, the value of LSB resistor is

a.

20 k ohm

b.

80 k ohm

c.

320 k ohm

d.

640 k ohm

Discuss
Answer: (d).640 k ohm
Page 44 of 117