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 52 of 63

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Q511.
The total field produced by an antenna array system at a distance from it is

a.

sum of the field produced by the individual antennas of the array system

b.

directional gain of antenna

c.

linear antenna gain

d.

vector sum of the field produced by the individual antennas of the array system

Discuss
Answer: (d).vector sum of the field produced by the individual antennas of the array system
Q512.
A perfect conductor is a perfect absorber of electromagnetic waves.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q513.
In a lead acid cell the density of the acid gives an indication of

a.

the level of the acid

b.

the eventual damages caused to the plates

c.

the charge of the battery

d.

the e.m.f. of the battery

Discuss
Answer: (c).the charge of the battery
Q514.
A (0.75 - j50) ohm load is connected to a coaxial transmission line of Z0 = 75 ohms at a frequency of 10 GHz Which of the following will be the best method of matching?

a.

Connecting an inductance at the end

b.

Connecting a short circuited stub at the load

c.

Connecting a capacitance at some distance from the load

d.

Connecting a short circuited stub at some specified distance from the load

Discuss
Answer: (d).Connecting a short circuited stub at some specified distance from the load
Q515.
In a four element Yagi-Uda antenna

a.

there is one driven element, one director and two reflectors

b.

there is one driven element, two directors and one reflector

c.

there are two driven elements, one director and two reflectors

d.

all the 4 elements are driven element

Discuss
Answer: (b).there is one driven element, two directors and one reflector
Q516.
The statement that the line integral of magnetic field about any closed path is exactly equal to the direct current enclosed by that path, is known as

a.

Ampere's circuital law

b.

Coulomb's law

c.

Electrostatic's theory

d.

None of the above

Discuss
Answer: (a).Ampere's circuital law
Q517.
Transverse magnetic (TM) waves have

a.

magnetic field component H in the direction of propagation

b.

electric field component E in the direction of propagation

c.

magnetic field component H in the direction of propagation and no component of electric field E in this direction

d.

electric field component E in the direction of propagation and no component of magnetic field H in this direction

Discuss
Answer: (d).electric field component E in the direction of propagation and no component of magnetic field H in this direction
Q518.
UHF and microwaves in the frequency range 300 MHz to 30 GHz can be best transmitted using __________ propagation

a.

sky wave

b.

ground wave

c.

duct

d.

none of the above

Discuss
Answer: (c).duct
Q519.
The directive gain of ฮป/2 resonant wire is 1.64.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q520.
The effective height of a vertical radiator can be increased by

a.

loading with lumped inductance

b.

supporting on an insulator

c.

capacitive loading

d.

giving input more power

Discuss
Answer: (c).capacitive loading
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