Communication Systems MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Communication Systems, 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 Communication Systems 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 Communication Systems mcq questions that explore various aspects of Communication Systems problems. Each MCQ is crafted to challenge your understanding of Communication Systems 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 Communication Systems 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 Communication Systems. 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 Communication Systems knowledge to the test? Let's get started with our carefully curated MCQs!

Communication Systems MCQs | Page 13 of 120

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Q121.
An FM signal with deviation ฮด is passed through mixer. Its frequency is reduced five fold. The deviation in output of mixer is
Discuss
Answer: (b).ฮด
Q122.
The total number of channels allotted for cellular telephone is
Discuss
Answer: (a).666
Q123.
It is found that in a telephone system 60 subscribers initiate calls during a 30 minute interval and the total duration of all the calls is 100 minutes. The load is
Discuss
Answer: (c).3.333 erlang
Q124.
E and H fields are perpendicular to each other.
Discuss
Answer: (a).True
Q125.
Consider the following:

1. A TV receiver antenna should pick up the TV signal and develop maximum voltage from the available strength of signal
2. It should reject unwanted signals
3. It should not suffer from co-channel interference
4. It should have a very narrowband

The correct statements are
Discuss
Answer: (b).1, 2 and 3 only
Q126.
If transmission bandwidth is doubled in FM, SNR is
Discuss
Answer: (c).decreased four times
Discuss
Answer: (a).maximum directive gain
Q128.
If the oscillator output is modulated by audio frequencies upto 10 kHz, the frequency range occupied by the side bands will be
Discuss
Answer: (b).702 kHz to 722 kHz
Q129.
The power to the portable unit of a cordless telephone is provided by
Discuss
Answer: (c).rechargeable cells
Q130.
In a AM wave the carrier and one of the side bands is suppressed. If m = 0.5, the percentage saving in power is
Discuss
Answer: (c).94.4%