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 10 of 13

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Q91.
What device is used to prevent power from the transmitter from going to the receiver side?

a.

Multiplexer

b.

Duplexer

c.

Monoplexer

d.

Filter

Discuss
Answer: (b).Duplexer
Q92.
What generates the final carrier frequency?

a.

Oscillator

b.

Modulator

c.

Antenna

d.

Power source

Discuss
Answer: (a).Oscillator
Q93.
Frequency multiplier multiplies the frequency deviation produced by the modulator.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q94.
______ is used to provide continuous tuning over the desired range?

a.

Variable frequency oscillator

b.

Frequency synthesizer

c.

Variable Frequency producer

d.

Frequency multiplier

Discuss
Answer: (a).Variable frequency oscillator
Q95.
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
Q96.
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
Q97.
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
Q98.
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
Q99.
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
Q100.
A cable TV service uses a single coaxial cable with a bandwidth of 860 MHz to transmit multiple TV signals to subscribers. Each TV signal is 6 MHz wide. How many channels can be carried?

a.

143

b.

123

c.

100

d.

150

Discuss
Answer: (a).143
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