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 25 of 63

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Q241.
Which one of the following statement is not a correct for a plane wave with

a.

The wave frequency is 10¯โถ r.p.s.

b.

The wavelength is 3.14 m

c.

The wave travels + x direction

d.

Wave is polarized in the z direction

Discuss
Answer: (d).Wave is polarized in the z direction
Q242.
For a transmission line with homogeneous dielectric the capacitance per unit length is 'c', the relative permittivity of the dielectric is 'ฮตr' and velocity of light in free space is 'v' the characteristic impedance z0 is equal to

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q243.
If the electric field intensity is given by following equation, the potential difference between x(2, 0, 0) and y(1, 2, 3) is

a.

+1 volt

b.

-1 volt

c.

+5 volt

d.

+6 volt

Discuss
Answer: (c).+5 volt
Q244.
Antenna radiation efficiency can be increased by

a.

reducing radiation resistance of the system

b.

increasing radiation resistance of the system

c.

providing effective earthing

d.

any of the above

Discuss
Answer: (b).increasing radiation resistance of the system
Q245.
Divergence of curl A is

a.

โˆ‡ . (โˆ‡ x A) = 1

b.

โˆ‡ . (โˆ‡ x A) = 0

c.

โˆ‡ . (โˆ‡ x A) = โˆ‡

d.

โˆ‡ . (โˆ‡ x A) = - โˆž

Discuss
Answer: (b).โˆ‡ . (โˆ‡ x A) = 0
Q246.
If reflection coefficient is 1/5, then corresponding VSWR is given by

a.

1

b.

2

c.

3

d.

3/2

Discuss
Answer: (d).3/2
Q247.
An open coil has

a.

zero resistance and inductance

b.

zero resistance and high inductance

c.

infinite resistance and zero inductance

d.

infinite resistance and normal inductance

Discuss
Answer: (c).infinite resistance and zero inductance
Q248.
Antenna used for direction finding is

a.

long dipole

b.

parabolic

c.

rhombic

d.

helical

Discuss
Answer: (a).long dipole
Q249.
In E plane metal plate lens antenna

a.

travelling wavefronts are retarded

b.

travelling wavefront are accelerated

c.

travelling wavefront remains unaffected

d.

none of the above

Discuss
Answer: (b).travelling wavefront are accelerated
Q250.
The disturbance from adjacent telephone line is known as

a.

cross fire

b.

cross talk

c.

inductive disturbance

d.

none of the above

Discuss
Answer: (b).cross talk
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