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 41 of 63

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Q401.
Which of the following antennas is ฮป /4 length?

a.

Dipole

b.

Marconi

c.

Monopole

d.

Parabolic

Discuss
Answer: (a).Dipole
Q402.
The number of lobes on each side of a 31 resonant antenna will be

a.

2

b.

3

c.

4

d.

6

Discuss
Answer: (d).6
Q403.
Analysis of EM wave in waveguide based on

a.

circuit theory

b.

field theory

c.

optical theory

d.

both (a) and (b)

Discuss
Answer: (b).field theory
Q404.
The main difference between the broadside arrays and end fire arrays is that

a.

individual elements are fed with same current in broadside arrays and of different magnitude in end fire arrays

b.

in broadside arrays the elements are equidistant whereas in end fire array the distance between elements increases progressively

c.

the total number of elements in broadside array is always one and a half times that of elements in end fire arrays

d.

in broadside array the individual elements are fed in, out of phase by 180° whereas in end fire array individual elements are fed with currents of equal magnitude but their phases vary progressively along the line in such a way as to make the entire arrangement substantially unidirectional

Discuss
Answer: (d).in broadside array the individual elements are fed in, out of phase by 180° whereas in end fire array individual elements are fed with currents of equal magnitude but their phases vary progressively along the line in such a way as to make the entire arrangement substantially unidirectional
Q405.
The charges between a hollow and solid metal spheres reside

a.

through out in both

b.

on outer surface in hollow and through out in solid

c.

on the outer surface in both

d.

none of the above

Discuss
Answer: (c).on the outer surface in both
Q406.
Maximum usable frequency is [fmuf]

a.

fc sec i

b.

fc cos i

c.

fc sin i

d.

fc โˆšsec i

Discuss
Answer: (a).fc sec i
Q407.
The magnetic field due to current I equals

a.

I/2 ฯ€r

b.

I/4 ฯ€r

c.

I2/2 ฯ€r

d.

I2/4 ฯ€r

Discuss
Answer: (a).I/2 ฯ€r
Q408.
VLF is generally used for

a.

telegraphy

b.

satellite communication

c.

instrument landing system

d.

all of the above

Discuss
Answer: (a).telegraphy
Q409.
In electromagnetic wave polarization is caused by

a.

refraction

b.

reflection

c.

longitudinal nature of electromagnetic waves

d.

transverse nature of electromagnetic waves

Discuss
Answer: (d).transverse nature of electromagnetic waves
Q410.
In a rectangular waveguide if operating frequency is greater than cut off frequency then propagation constant is

a.

purely real

b.

purely imaginary

c.

equal to unit

d.

a complex number

Discuss
Answer: (b).purely imaginary
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