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 32 of 63

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Q311.
The gain of an antenna with a circular aperture of diameter 3 metres at a frequency of 5 GHz, will be

a.

2.4674

b.

24.674

c.

246.74

d.

24674

Discuss
Answer: (d).24674
Q312.
The gain of a current element is

a.

0 dB

b.

1.67 dB

c.

1.76 dB

d.

3 dB

Discuss
Answer: (c).1.76 dB
Q313.
Poynting theorem relates the electric intensity E, magnetic intensity H to the rate of energy flow per unit area at a point P as

a.

P = E/H

b.

P = H/E

c.

E = 1/E x H

d.

P = E x H

Discuss
Answer: (d).P = E x H
Q314.
The absorption of EM wave by the atmosphere depends on

a.

polarization of waves

b.

frequency in use

c.

dist. from Ty

d.

height of antenna

Discuss
Answer: (b).frequency in use
Q315.
In end fire array the principle direction of radiation

a.

is perpendicular to the array axis

b.

is perpendicular to the array axis and also to the plane containing the array elements

c.

coincides with the direction of the array

d.

is at 45° to the direction of array axis

Discuss
Answer: (c).coincides with the direction of the array
Q316.
What does the following expression represent?

a.

Electric Energy density

b.

Magnetic Energy density

c.

Power density

d.

Radiation Resistance

Discuss
Answer: (b).Magnetic Energy density
Q317.
For radiation field of an antenna at a distance r varies as

a.

1/r

b.

1/r²

c.

1/r³

d.

1/rโด

Discuss
Answer: (a).1/r
Q318.
The attenuation factor ฮฑ and phase shift factor ฮฒ for a wave propagated in a good dielectric having ฯƒ/ฯ‰ฮต >> 1 are given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q319.
The attenuation constant in case of a transmission line is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q320.
The energy stored in an electric field is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
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