Digital Communication Techniques MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Digital Communication Techniques, a fundamental topic in the field of Avionics 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 Communication Techniques 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 Communication Techniques mcq questions that explore various aspects of Digital Communication Techniques problems. Each MCQ is crafted to challenge your understanding of Digital Communication Techniques principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Avionics Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Digital Communication Techniques MCQs are your pathway to success in mastering this essential Avionics Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Digital Communication Techniques. 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 Communication Techniques knowledge to the test? Let's get started with our carefully curated MCQs!

Digital Communication Techniques MCQs | Page 11 of 13

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Q101.
What is the only oscillator capable of meeting the precision and stability demanded by the FCC?

a.

Armstrong Oscillator

b.

Crystal Oscillator

c.

Hartley oscillator

d.

RC Phase Shift Oscillator

Discuss
Answer: (b).Crystal Oscillator
Q102.
The device that maintains controlled temperature for crystal oscillators are called __________

a.

Crystal stove

b.

Crystal ovens

c.

Crystal chamber

d.

Temperature chamber

Discuss
Answer: (b).Crystal ovens
Q103.
What is the maximum frequency of a 16-MHz crystal with a stability of 200 ppm?

a.

1,60,03,200 Hz

b.

2,14,65,400 Hz

c.

1,36,12,500 Hz

d.

4,56,42,863 Hz

Discuss
Answer: (a).1,60,03,200 Hz
Q104.
Calculate the transmitter output frequency if the transmitter uses a crystal oscillator with a frequency of 14.9 MHz and a frequency multiplier chain with factors of 2, 3, and 3.

a.

1.564 MHz

b.

268.2 MHz

c.

264.3 MHz

d.

265.6 MHz

Discuss
Answer: (b).268.2 MHz
Q105.
Calculate the frequency for maximum drift of crystal if The crystal has a stability of 6300 ppm and an output frequency of 268.2 MHz and frequency multiplier chain with factors of 2, 3, and 3.

a.

123.5 MHz

b.

423.2 MHz

c.

269.65 MHz

d.

235.1 MHz

Discuss
Answer: (c).269.65 MHz
Q106.
What is the purpose of one shot multivibrator?

a.

Trigger all AND gates at clock frequency

b.

Trigger all OR gates at clock frequency

c.

Trigger all AND gates at signal frequency

d.

Trigger all OR gates at signal frequency

Discuss
Answer: (a).Trigger all AND gates at clock frequency
Q107.
The circuit used to regenerate clock pulses from the transmitted PAM signals is called ____

a.

Clock demodulator circuits

b.

Timer circuits

c.

Clock receiving circuits

d.

Clock recovery circuits

Discuss
Answer: (d).Clock recovery circuits
Q108.
What are used to reduce or stop synchronization problems while receiving?

a.

Clock recovery circuits

b.

Demodulators

c.

Synchronizer

d.

Band pass filter

Discuss
Answer: (a).Clock recovery circuits
Q109.
In a four channel system, all four signals transmitted contain information.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q110.
Which of the following is not an advantage of time division multiplexing?

a.

Signal interference is less

b.

More flexible

c.

Full channel can be used for every signal

d.

Fast data transfer

Discuss
Answer: (d).Fast data transfer
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