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 56 of 63

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Q551.
When a current carrying conductor is brought into magnetic field, the force that moves the conductor depends upon

a.

the value of current

b.

the weight of the conductor

c.

the direction of the conductor

d.

none of the above

Discuss
Answer: (a).the value of current
Q552.
Due to which of the following reasons a lightning conductor on top of a building is made into a pointed spike?

a.

Dust particles may not accumulate

b.

Charge per unit area becomes very high for lightening to discharge

c.

Rain drops may not collect

d.

None of the above

Discuss
Answer: (b).Charge per unit area becomes very high for lightening to discharge
Q553.
The virtual height of an ionospheric layer is __________ true height

a.

equal to

b.

less than

c.

higher than

d.

no relation

Discuss
Answer: (c).higher than
Q554.
The divergence of a vector is a scalar, while the curl of a vector is another

a.

scalar

b.

vector

c.

unit vector

d.

none of the above

Discuss
Answer: (b).vector
Q555.
An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 ฮฉ. The standing wave ratio will be

a.

1.5

b.

2.5

c.

3.5

d.

4.5

Discuss
Answer: (a).1.5
Q556.
The skip distance is the maximum distance upto which ionospheric reflection is possible.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q557.
A transmission line has primary constants R, L, G and C and secondary constant zโ‚€ and ฮณ = (ฮฑ + Jฮฒ). If the line is loss less, then

a.

R = 0, G โ‰  0, and a = 0

b.

R = 0, G = ฮฑ, 0 and ฮฒ = |r|

c.

G = 0, ฮฑ = ฮฒ

d.

R = 0, G = 0, ฮฑ = 0, ฮฒ = |r|

Discuss
Answer: (a).R = 0, G โ‰  0, and a = 0
Q558.
Which of the following is multiband HF receiving antenna?

a.

Square loop

b.

Log-periodic

c.

Conical horn

d.

Folded dipole

Discuss
Answer: (b).Log-periodic
Q559.
A rectangular waveguide is a

a.

rectangular conducting wire to propagate electromagnetic waves

b.

hollow rectangular walled room carrying electromagnetic wave

c.

hollow rectangular conducting tube through which electromagnetic waves can be propagated

d.

tube antenna to transmit and receive electromagnetic waves

Discuss
Answer: (c).hollow rectangular conducting tube through which electromagnetic waves can be propagated
Q560.
If a and b are the dimensions of waveguide then

a.

a = 3b

b.

a = 2b

c.

a = b

d.

a = b/4

Discuss
Answer: (b).a = 2b
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