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 21 of 117

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Q201.
In the given figure assume that initially Q = 1 with Clock Pulses being given, the subsequent states of Q will be

a.

1, 0, 1, 0, 1......

b.

0, 0, 0, 0, 0......

c.

1, 1, 1, 1, 1......

d.

0, 1, 0, 1, 0......

Discuss
Answer: (c).1, 1, 1, 1, 1......
Q202.
In the circuit shown below, the outputs Y1 and Y2 for the given initial condition Y1 = Y2 = 1 and after four input pulses will be

a.

Y1 = 1, Y2 = 0

b.

Y1 = 0, Y2 = 0

c.

Y1 = 0, Y2 = 1

d.

Y1 = 1, Y2 = 1

Discuss
Answer: (d).Y1 = 1, Y2 = 1
Q203.
For the logic circuit of the given figure the simplified Boolean expression is

a.

Y = AB + Aฬ… C

b.

Y = (AB) (Aฬ… C)

c.

Y = ABC

d.

Y = A Bฬ… + Aฬ… C

Discuss
Answer: (a).Y = AB + Aฬ… C
Q204.
The number of inputs and outputs of a full adder are

a.

3 and 2 respectively

b.

2 and 3 respectively

c.

4 and 2 respectively

d.

2 and 4 respectively

Discuss
Answer: (a).3 and 2 respectively
Q205.
A VF display operates on the principle of a vacuum diode.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q206.
In a 3 input NAND gate, the number of states in which output is 1 equals

a.

8

b.

1

c.

6

d.

5

Discuss
Answer: (b).1
Q207.
In a mod-12 counter the input clock frequency is 10 kHz. The output frequency is

a.

0.833 kHz

b.

1.0 kHz

c.

0.91 kHz

d.

0.77 kHz

Discuss
Answer: (a).0.833 kHz
Q208.
What will be BCD number when the output is 0.37 V?

a.

00110111

b.

10110111

c.

11001000

d.

01001000

Discuss
Answer: (a).00110111
Q209.
The first machine cycle of an instruction is always

a.

a memory read cycle

b.

a fetch cycle

c.

a input/output read cycle

d.

a memory write cycle

Discuss
Answer: (b).a fetch cycle
Q210.
A counter has N flip flops. The total number of states are

a.

N

b.

2 N

c.

2แดบ

d.

4 N

Discuss
Answer: (c).2แดบ
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