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 11 of 63

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Q101.
Which one of the following is correct expression. Where t is torque, B magnetic field, M is the moment

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q102.
For an incident wave which is normal on the perfect dielectric the reflection factor is given by (where ฮต1 and ฮต2 are the permittivities of 1st and 2nd medium respectively)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q103.
For EM wave propagation in free space, the free space is defined as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q104.
A field given below can be

a.

harmonic

b.

divergence less

c.

solenoidal

d.

rotational

Discuss
Answer: (d).rotational
Q105.
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
Q106.
Laplace equation in cylindrical co-ordinates is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q107.
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
Q108.
A uniform plane EM wave incident normally on a plane surface of a dielectric material is reflected with a VSWR of 3. What percentage of incident power that is reflected?

a.

10%

b.

25%

c.

50%

d.

75%

Discuss
Answer: (b).25%
Q109.
Poynting vector is associated with which of the following?

a.

Power flow in electromagnetic

b.

Flux in magnetic field

c.

Charge in electrostatic field

d.

Current in electrostatic field

Discuss
Answer: (a).Power flow in electromagnetic
Q110.
Calculate the directivity of a given linear end fire, uniform array of 20 element, each separated by ฮป/3

a.

100

b.

10

c.

26.66

d.

30

Discuss
Answer: (c).26.66
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