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 42 of 44

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Q411.
When temperature is more than ferromagnetic curie temperature, the behaviour of a ferromagnetic material is similar to that of paramagnetic material.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q412.
As regards dielectric constant εr

a.

the units are farads/m

b.

the units are newton/coulomb

c.

it is dimensionless

d.

the units are farads

Discuss
Answer: (c).it is dimensionless
Q413.
A parallel plate capacitor having C = 200 x 10¯¹² F has loss dielectric having tan δ = 4 x 10¯⁴. At an ac voltage of f = 10⁶ Hz and peak value 2 V, the dielectric losses are

a.

10¯⁸ W

b.

10¯⁶ W

c.

10¯⁴ W

d.

10¯² W

Discuss
Answer: (b).10¯⁶ W
Q414.
In ferromagnetic materials, the orientation between neighbouring permanent dipoles is parallel.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q415.
Resistivity of copper is lower than that of nickel. When a small percentage of copper is added to nickel, the resistivity

a.

increases

b.

decreases

c.

may increase or decrease

d.

remains the same

Discuss
Answer: (a).increases
Q416.
Lines of magnetic field attract each other.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q417.
In a valence crystal, the valence electrons

a.

are not shared

b.

are shared between neighbouring atoms

c.

are shared by all atoms

d.

any of the above

Discuss
Answer: (b).are shared between neighbouring atoms
Q418.
Transformer oil is

a.

refined vegetable oil

b.

refined mineral oil

c.

mixture of vegetable and mineral oil

d.

none of the above

Discuss
Answer: (b).refined mineral oil
Q419.
Assertion (A): Drift velocity of electrons is proportional to the applied electric field E.

Reason (R): The average drift velocity per unit field is called mobility.

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: (b).Both A and R are true but R is not correct explanation of A
Q420.
The materials having low retentivity are suitable for making

a.

temporary smagnets

b.

weak magnets

c.

permanent magnets

d.

both temporary and permanent magnets

Discuss
Answer: (a).temporary smagnets
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