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 15 of 63

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Discuss
Answer: (a).direction of electric field
Q142.
Calculate the critical frequency for the E layer if maximum ionic densities are 3 x 10โถ
Discuss
Answer: (b).15.58 kHz
Q143.
A uniform plane wave travelling in air is incident on the plane boundary between air and another dielectric medium with ฮตr = 4. The reflection coefficient for the normal incidence is
Discuss
Answer: (d).0.33 โˆ 180°
Q144.
A transmission line has characteristics impedance of (75 + j 0.01) ฮฉ and is terminated in a load impedance of (70 + j 50) ฮฉ. The transmission coefficient will be
Discuss
Answer: (d).1.08 + j 0.32
Q145.
Maximum effective aperture of an antenna which is operating at a wavelength of 3 meters and has a directivity of 100
Discuss
Answer: (d).71.6 m²
Q146.
The distance between maxima and minima of a standing wave is
Discuss
Answer: (a).ฮป/4
Q147.
A TV. transmitting aerial is fixed on top of a 150 metre tower located on a mountain 1200 m height. The range of transmitter is
Discuss
Answer: (b).152 km
Q148.
A 10 GHz signal propagates in a waveguide with a phase velocity of 4 x 10โธ m/s. If the signal produces standing wave in the guide, then the distance between successive minimal will be
Discuss
Answer: (b).20 mm
Q149.
The incidence from dielectric medium 1 (ฮต1) into dielectric medium 2 (ฮต2), Brewster angle ฮธB and the corresponding angle of transmission ฮธt for ฮต2/ฮต1 = 3 will be respectively
Discuss
Answer: (c).60° and 30°
Q150.
A medium of relative permittivity ฮตr2 = 2 forms an interface with free space. A point source of EM energy is located in the medium at a depth of 1 meter from the interface. Due to the total internal reflection, the transmitted beam has a circular cross-section over the interface. The area of the beam cross section at the interface is given by
Discuss
Answer: (d).ฯ€ m²