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 93 of 117

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Q921.
The resolution of a 12-bit D/A converter using a binary ladder with + 10V as the full scale output will be

a.

2.44 mV

b.

3.50 mV

c.

4.32 mV

d.

5.12 mV

Discuss
Answer: (a).2.44 mV
Q922.
Assertion (A): Demorgan's first theorem replaces a NOR gate by bubbled AND gate.

Reason (R): Double complement of a variable equals the variable.

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: (b).Both A and R are correct but R is not correct explanation of A
Q923.
A flip-flop circuit is

a.

monostable

b.

bistable

c.

multistable

d.

unstable

Discuss
Answer: (b).bistable
Q924.
Assertion (A): The use of 2's complement has simplified the computer hardware for arithmetic operations

Reason (R): 2's complement is obtained by adding 1 to 1's complement.

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: (b).Both A and R are correct but R is not correct explanation of A
Q925.
How many lines are there in address bus of 8085 ฮผp?

a.

6

b.

8

c.

12

d.

16

Discuss
Answer: (d).16
Q926.
Consider the following statements Timer 555 can be used as

1. monostable multivibrator
2. bistable multivibrator
3. astable multivibrator

Which of the above statements are correct?

a.

1 and 2

b.

1 and 3

c.

2 and 3

d.

1, 2, 3

Discuss
Answer: (b).1 and 3
Q927.
Which is correct with respect to computer memory?

a.

Only a particular address can have a particular memory

b.

Any address can have any memory

c.

To read a word from computer memory, it is not necessary to specify a location

d.

None of the above

Discuss
Answer: (b).Any address can have any memory
Q928.
A 3 bit binary adder should use

a.

3 full adders

b.

2 full adders and 1 half adder

c.

1 full adder and 2 half adders

d.

3 half adders

Discuss
Answer: (b).2 full adders and 1 half adder
Q929.
For a depletion type NMOS, Vp = - 4 volts. For VGS = 0, 1D = 16 mA in the pinch off region of VDS. For VGS = - 2, the value of ID in the pinch off region of VDS is given by

a.

64 mA

b.

32 mA

c.

16 mA

d.

4 mA

Discuss
Answer: (d).4 mA
Q930.
The two outputs of RS flip-flop are

a.

always low

b.

always high

c.

either low or high

d.

always complementary

Discuss
Answer: (d).always complementary
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