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 37 of 63

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Q361.
One volt equals

a.

one joule

b.

one joule/coulomb

c.

one coulomb/joule

d.

none of the above

Discuss
Answer: (c).one coulomb/joule
Q362.
Magnetic susceptibility of a medium is the ratio of

a.

magnetic field strength to mmf

b.

intensity of magnetization to magnetic flux density

c.

intensity of magnetization to field strength

d.

mmf to magnetic field strength

Discuss
Answer: (c).intensity of magnetization to field strength
Q363.
In order to receive a vertically polarized wave, the conductor of the dipole should be mounted

a.

horizontally

b.

vertically

c.

at an angle of 45°

d.

none of the above

Discuss
Answer: (b).vertically
Q364.
Which of the following statements is incorrect?

a.

The line integral of B around the circuit is called magnetomotive force

b.

Normal components of B are continuous but the normal components of H are not continuous

c.

Magnetic flux lines are bent away from the normal in the medium with the highest value of permeability

d.

The unit of permeability is henry/metre

Discuss
Answer: (a).The line integral of B around the circuit is called magnetomotive force
Q365.
Reflectors and lens antennas are commonly used

a.

in LF communication systems

b.

not beyond 100 kHz

c.

in the range 10 MHz to 100 MHz

d.

above 100 MHz

Discuss
Answer: (d).above 100 MHz
Q366.
In a uniform linear array, four isotropic radiating elements are spaced ฮป/4 apart. The progressive phase shift between the elements required for forming the main beam at 60° off the end fire is

a.

-ฯ€ radius

b.

-ฯ€/2 radius

c.

-ฯ€/4 radius

d.

-ฯ€/8 radius

Discuss
Answer: (c). -ฯ€/4 radius
Q367.
After reflection from a plane conducting surface, the apparent velocity of electromagnetic wave becomes greater than the velocity of light in free space is called

a.

conventional velocity

b.

phase velocity

c.

propagation velocity

d.

group velocity

Discuss
Answer: (b).phase velocity
Q368.
In a turnstile antenna the crossed dipoles are excited with voltages

a.

in phase with each other

b.

90° out of phase with each other

c.

120° out of phase with each other

d.

180° out of phase with each other

Discuss
Answer: (b).90° out of phase with each other
Q369.
Directivity of antenna is defined as

a.

maximum directive gain

b.

average directive gain

c.

โˆž

d.

0

Discuss
Answer: (a).maximum directive gain
Q370.
Consider the following; for a loss-less transmission line we can write,

1. Zin = - jz0 for a shorted line with l = ฮป/8
2. Zin = ± j โˆž for a shorted line with l = ฮป/4
3. Zin= jz0 for an open line with l = ฮป/2
4. Zin = 0 for a matched line of any length

Select the correct answer using the codes given below codes.

a.

1, 2

b.

2, 3

c.

1, 3

d.

2, 4

Discuss
Answer: (d).2, 4
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