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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Q141.
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
Q142.
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°
Q143.
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
Q144.
A transmission line of characteristic impedance z0 = 50 ฮฉ. Phase Velocity = 2 x 10โธ m/sec, and length l = 1 m is terminated by a load z1 = (30 - j 40) ohms. The input impedance of the line for a frequency of 100 MHz will be
Discuss
Answer: (b).(30 - j 40) ฮฉ
Q145.
A circular waveguide carries TE11 mode whose radial electric-field is given by

Er = Eโ‚€J1 (r) sin ฯ† V/m

where 'r' is the radial distance in cm, from the waveguide axis. The cut-off wavelength of the mode is
Discuss
Answer: (c).2ฯ€ cm
Q146.
The I/P impedance of a ฮป/8 long short circuited section of a loss less transmission line is
Discuss
Answer: (b).inductive
Q147.
For frequencies upto 1650 kHz __________ antenna is used
Discuss
Answer: (a).yagi
Q148.
Due to which of the following reasons, the ground wave eventually disappears, as one moves away from the transmitter?
Discuss
Answer: (a).Tilting
Discuss
Answer: (d).any of the above
Discuss
Answer: (c).transmitted through the ionosphere