Electromagnetic Field Theory MCQs

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

Electromagnetic Field Theory MCQs | Page 53 of 63

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Q521.
When an electromagnetic wave travelling in one medium strikes upon a second medium (having a different conductivity) the wave will be
Discuss
Answer: (d).partially transmitted and partially reflected
Q522.
The line of sight communication requires that transmit and receive antennas to face each other. If the transmit antenna is vertically polarized, for the best reception the receive antenna should be
Discuss
Answer: (a).horizontally polarized
Q523.
An antenna has 40 ฮฉ resistance and 60 ฮฉ radiation resistance. The efficiency of the antenna is
Discuss
Answer: (d).60%
Q524.
The duration of sunspot cycle is
Discuss
Answer: (b).11 years
Q525.
Electromagnetic cavity resonators (energy storage devices) are used in
Discuss
Answer: (d).all of the above
Q526.
Waveguides are generally used above
Discuss
Answer: (d).1000 MHz
Q527.
Which type of fading causes serious distortion of modulated signal?
Discuss
Answer: (a).Selective fading
Q528.
Which of the following is abnormal variation in ionosphere?
Discuss
Answer: (c).Ionospheric storms
Q529.
Troposphere is the upper part of the Earth's atmosphere which absorbs large quantities of Sun's radiations.
Discuss
Answer: (b).False
Q530.
For resonant long wire antenna 'n' half wavelength long in free space, if 'n' is increased then inclination of the major lobe with wire axis will __________ .
Discuss
Answer: (b).decreases