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 43 of 63

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Q421.
A field given below can be

a.

harmonic

b.

divergence less

c.

solenoidal

d.

rotational

Discuss
Answer: (d).rotational
Q422.
If a plane electromagnetic wave satisfies the equation given below, the wave propagates in the (at an angle of 45° between the x and z direction)

a.

x-direction

b.

z-direction

c.

y direction

d.

xy plane

Discuss
Answer: (b).z-direction
Q423.
Laplace equation in cylindrical co-ordinates is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q424.
For transmission of waveform a dielectric medium of permittivity ฮต1 into a dielectric medium of lower permittivity ฮต2 , (ฮต1 > ฮต2) the critical angle of incidence ฮธc (relative to the interface) is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q425.
For TM waves in a parallel plate waveguide, the minimum attenuation arising from imperfect conductors would occur at a freq. of (fc is the cut off frequency)

a.

3 fc

b.

โˆš3 fc

c.

2 fc

d.

โˆš2 fc

Discuss
Answer: (d).โˆš2 fc
Q426.
__________ acts as a depolarizer in a dry cell.

a.

ammonium chloride

b.

carbon powder

c.

manganese dioxide

d.

zinc chloride

Discuss
Answer: (c).manganese dioxide
Q427.
Tropospheric mode of propagation is used in

a.

UHF

b.

VLF

c.

MF

d.

HF

Discuss
Answer: (a).UHF
Q428.
The skip distance is

a.

same for each layer

b.

independent of frequency

c.

independent of the state of ionisation

d.

independent of transmitted power

Discuss
Answer: (d).independent of transmitted power
Q429.
Polystyrene has a relative permittivity of 2.7. If the wave is incident at an angle ฮธi of 30° from air into polystyrene, the angle of transmission will be nearly

a.

0.2°

b.

2°

c.

18°

d.

48°

Discuss
Answer: (c).18°
Q430.
For frequency up to 1650 kHz, the transmitting antenna is used a

a.

parabolic dish

b.

vertical antenna

c.

yagi antenna

d.

turnstile antenna

Discuss
Answer: (b).vertical antenna
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