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 26 of 117

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Q251.
In a shift left register, shifting a bit by one bit means

a.

division by 2

b.

multiplication by 2

c.

subtraction of 2

d.

None of the above

Discuss
Answer: (b).multiplication by 2
Q252.
A multiple emitter transistor has many emitters and collectors.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q253.
A mode-10 counter can divide the clock frequency by a factor of

a.

10

b.

100

c.

1000

d.

10000

Discuss
Answer: (a).10
Q254.
Which of the following binary numbers is equivalent to decimal 10?

a.

1000

b.

1100

c.

1010

d.

1001

Discuss
Answer: (c).1010
Q255.
A 4 bit synchronous counter has flip flops having propagation delay of 50 ns each and AND gates having propagation delay of 20 ns each. The maximum frequency of clock pulses can be

a.

20 MHz

b.

50 MHz

c.

14.3 MHz

d.

5 MHz

Discuss
Answer: (c).14.3 MHz
Q256.
A counter has 4 flip flops. It divides the input frequency by

a.

4

b.

2

c.

8

d.

16

Discuss
Answer: (d).16
Q257.
Out of 5 M x 8, 1 M x 16, 2 M x 16 and 3M x 8 memories, which memory can store more bits?

a.

5 M x 8

b.

2 M x 16

c.

3 M x 8

d.

1 M x 16

Discuss
Answer: (a).5 M x 8
Q258.
A 6 bit ladder A/D converter has input 101001. The output is (assume 0 = 0 V and 1 = 10 V)

a.

4.23

b.

6.41

c.

5.52

d.

9.23

Discuss
Answer: (b).6.41
Q259.
A ripple counter has 4 bits and uses flip flops with propagation delay time of 25 ns. The maximum possible time for change of state will be

a.

25 ns

b.

50 ns

c.

75 ns

d.

100 ns

Discuss
Answer: (d).100 ns
Q260.
A counter has a modulus of 10. The number of flip flops is

a.

10

b.

5

c.

4

d.

3

Discuss
Answer: (c).4
Page 26 of 117