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 7 of 63

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Q61.
The radiation resistance of a ฮป/16 wire dipole in free space will be nearly

a.

1 ฮฉ

b.

3 ฮฉ

c.

13 ฮฉ

d.

30 ฮฉ

Discuss
Answer: (b).3 ฮฉ
Q62.
The phase angle corresponding to ฮป/4 in a standing-wave pattern is

a.

30°

b.

90°

c.

135°

d.

180°

Discuss
Answer: (b).90°
Q63.
A hollow rectangular waveguide has dimensions a = 2b. Calculate the amount of attenuation, if the frequency is 3 GHz, and b = 1 cm.

a.

49

b.

47.33

c.

50.33

d.

50

Discuss
Answer: (b).47.33
Q64.
Calculate the directivity of an antenna for ฮธE = 30°, ฮธH = 60

a.

46

b.

23

c.

50

d.

100

Discuss
Answer: (b).23
Q65.
Divergence theorem relate surface integration with volume integration as

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
Q66.
In figure the current distribution is represented by

a.

curve A

b.

curve B

c.

curve C

d.

curve D

Discuss
Answer: (c).curve C
Q67.
Given the following equation, if the radiation intensity of an antenna is proportional to sin² ฮธ, where ฮธ is the elevation angle, the antenna directivity will be

a.

8/3ฯ€

b.

16/3ฯ€

c.

4ฯ€/3

d.

3ฯ€/8

Discuss
Answer: (d).3ฯ€/8
Q68.
The radiation pattern of helical antenna (axial mode) is represented by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q69.
Antenna aperture efficiency is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (c).C
Q70.
The characteristic equation of plane wave in E independent of two dimensions y and z is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (a).A
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