Materials and Components MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Materials and Components, 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 Materials and Components 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 Materials and Components mcq questions that explore various aspects of Materials and Components problems. Each MCQ is crafted to challenge your understanding of Materials and Components 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 Materials and Components 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 Materials and Components. 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 Materials and Components knowledge to the test? Let's get started with our carefully curated MCQs!

Materials and Components MCQs | Page 21 of 44

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Q201.
For a core having a relative permeability ฮผแตฃ, magnetic dipole moment per unit volume M and field strength H, the flux density B is

a.

B = ฮผแตฃ (H + M)

b.

B = ฮผโ‚€ (H + M)

c.

B = ฮผโ‚€ฮผแตฃ (H + M)

d.

B = ฮผโ‚€ฮผแตฃ (H - M)

Discuss
Answer: (b).B = ฮผโ‚€ (H + M)
Q202.
The law that K/ฯƒT (where K is thermal conductivity, ฯƒ is electrical conductivity and T is absolute temperature) for all metals is equal to a universal constant is known as

a.

Lorentz law

b.

Wiedemann Franz law

c.

Curie Weiss law

d.

Kittel law

Discuss
Answer: (a).Lorentz law
Q203.
In elemental dielectrics, the orientation and ionic polarization are absent.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q204.
In which of the following semiconductor are holes majority carriers

a.

intrinsic

b.

extrinsic

c.

p type

d.

n type

Discuss
Answer: (c).p type
Q205.
The equation D = โˆˆโ‚€โˆˆแตฃ E refers only to isotropic materials.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q206.
When a ferromagnetic substance is magnetised there are small changes in dimensions. This phenomenon is called

a.

hysteresis

b.

magnetostriction

c.

diamagnetism

d.

dipolar relaxation

Discuss
Answer: (b).magnetostriction
Q207.
Assertion (A): In some materials, ฦแตฃ is independent of temperature while in others, ฦแตฃ depends on temperature.

Reason (R): If permanent dipoles are absent, ฦแตฃ varies with temperature.

a.

Both A and R are true and R is correct explanation of A

b.

Both A and R are true but R is not correct explanation of A

c.

A is true but R is false

d.

A is false but R is true

Discuss
Answer: (c).A is true but R is false
Q208.
An electron in a homogeneous magnetic field and having velocity perpendicular to the direction of field moves

a.

perpendicular to the field

b.

along the field

c.

along a straight line inclined at 45° to field

d.

in a circular path

Discuss
Answer: (d).in a circular path
Q209.
Spontaneous polarization occurs in ferroelectric materials.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q210.
Lines of magnetic field cannot intersect.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
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