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 57 of 63

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Q561.
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
Q562.
An open wire transmission line having a characteristic impedance of 600 ohms is terminated by a resistive load of 900 Ω. The standing wave ratio will be

a.

1.5

b.

2.5

c.

3.5

d.

4.5

Discuss
Answer: (a).1.5
Q563.
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
Q564.
A transmission line has primary constants R, L, G and C and secondary constant z₀ and γ = (α + Jβ). If the line is loss less, then

a.

R = 0, G ≠ 0, and a = 0

b.

R = 0, G = α, 0 and β = |r|

c.

G = 0, α = β

d.

R = 0, G = 0, α = 0, β = |r|

Discuss
Answer: (a).R = 0, G ≠ 0, and a = 0
Q565.
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
Q566.
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
Q567.
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
Q568.
The frequency range for satellite communication is

a.

3 to 30 kHz

b.

300 to 3000 kHz

c.

3000 to 30000 MHz

d.

30000 to 300000 MHz

Discuss
Answer: (c).3000 to 30000 MHz
Q569.
Tropospheric scatter is used with frequencies in the

a.

HF

b.

VHF

c.

UHF

d.

VLF

Discuss
Answer: (c).UHF
Q570.
A Yagi antenna has a driven antenna

a.

only

b.

with a reflector

c.

with one or more directors

d.

with a reflector and one or more directors

Discuss
Answer: (d).with a reflector and one or more directors
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