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 21 of 120

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Q201.
If ฮณ = (S0/N0)/(Si/Nm) where S0 and S1 are signal power output and signal power input and N0 and Nm are noise power output and noise power input, the value of ฮณ for SSB-SC and DSB-SC amplitude modulated system respectively are
Discuss
Answer: (a).1 and 1
Q202.
Which of the following amplifiers is used for impedance matching?
Discuss
Answer: (b).CC
Q203.
Which of the following amplifiers has highest output impedance?
Discuss
Answer: (b).CB
Q204.
In a superheterodyne receiver, having no RF amplifier, the IF is 455 kHz. The image frequency at 1000 kHz is
Discuss
Answer: (b).545 kHz
Q205.
Audio tapes have two tracks each 2.5 mm wide.
Discuss
Answer: (b).False
Q206.
Which of the following amplifiers has a voltage gain of less than 1?
Discuss
Answer: (b).CC
Q207.
Some possible disadvantages of high level modulation in TV transmitters are

1. Video monitor has to supply high video voltages upto several hundred volts into highly capacitive loads drawing high current at video frequencies
2. The grid modulated stage presents a varying load to its driver
3. The linearity and high video driving power present design problems

Out of above which are true?
Discuss
Answer: (c).1, 2 and 3
Q208.
If transmission bandwidth is doubled in FM, SNR is
Discuss
Answer: (c).decreased four times
Discuss
Answer: (a).maximum directive gain
Q210.
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