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 43 of 117

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Q421.
Symmetrical square wave of time period 100 ฮผs can be obtained from square wave of time period 10 ฮผs by using

a.

divide by 5 circuit

b.

divide by 2 circuit

c.

divide by 5 circuit followed by divide by 2 circuit

d.

BCD counter

Discuss
Answer: (c).divide by 5 circuit followed by divide by 2 circuit
Q422.
The initial state of a Mod-16 counter is 0110. After 37 clock pulses the state of counter will be

a.

1011

b.

0110

c.

010

d.

0001

Discuss
Answer: (a).1011
Q423.
In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require

a.

1120 bits

b.

2240 bits

c.

33 bits

d.

64 bits

Discuss
Answer: (b).2240 bits
Q424.
A digital system is required to amplify a binary encoded audio signal. The user should be able to control the gain of the amplifier from a minimum to a maximum in 100 increments. The minimum number of bits required to encode, in straight binary is,

a.

8

b.

6

c.

5

d.

7

Discuss
Answer: (d).7
Q425.
A 4 bit transistor register has output voltage of high-low-high-low. The binary number stored and its decimal equivalent are

a.

0101 and 5

b.

0101 and 10

c.

1010 and 5

d.

1010 and 10

Discuss
Answer: (d).1010 and 10
Q426.
Assertion (A): A demultiplexer cannot be used as a decoder

Reason (R): A multiplexer selects one of many outputs whereas a decoder selects on output corresponding to coded input.

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: (d).A is false, R is true
Q427.
Hexadecimal number F is called to octal number

a.

15

b.

16

c.

17

d.

18

Discuss
Answer: (c).17
Q428.
A 4 bit ripple counter is in 0000 state. The clock pulses are applied and then removed. The counter reads 0011. The number of clock pulses which have occurred are

a.

3

b.

3 or 19

c.

3 or 19 or 35

d.

none of the above

Discuss
Answer: (c).3 or 19 or 35
Q429.
TTL logic is preferred to DRL logic because

a.

greater fan-out is possible

b.

greater logic levels are possible

c.

greater fan-in is possible

d.

less power consumption is achieve

Discuss
Answer: (a).greater fan-out is possible
Q430.
Assertion (A): Schottky transistors are preferred over normal transistors in digital circuits

Reason (R): A Schottky transistor when used as a switch, between cutoff and active region.

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
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