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 29 of 44

Discover more Topics under Electronics and Communication Engineering

Q281.
Assertion (A): An amorphous material is obtained when mobility of atoms is inhibited during solidification.

Reason (R): Crystalline state is a natural state for most solids.

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
Q282.
An air cored inductance is a

a.

linear circuit element because its reactance varies linearly with voltage at a fixed frequency

b.

linear circuit element because its current varies linearly with voltage at a fixed frequency

c.

nonlinear circuit element due to saturation of core

d.

nonlinear circuit element because v = Ldi/dt

Discuss
Answer: (a).linear circuit element because its reactance varies linearly with voltage at a fixed frequency
Q283.
The number of valence electrons in silicon atom is

a.

4

b.

2

c.

1

d.

zero

Discuss
Answer: (a).4
Q284.
โˆˆแตฃ is determined by the atomic structure of the dielectric.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q285.
A rare gas has N atoms per m³. If electronic polarizability of single atom of this gas is ฮฑe, then

a.

โˆˆแตฃ = Nฮฑe

b.

โˆˆโ‚€โˆˆแตฃ = Nฮฑe

c.

โˆˆโ‚€(โˆˆแตฃ - 1) = Nฮฑe

d.

โˆˆโ‚€(โˆˆแตฃ - 2) = Nฮฑe

Discuss
Answer: (c).โˆˆโ‚€(โˆˆแตฃ - 1) = Nฮฑe
Q286.
The colour code on a carbon resistor is brown-black-red-gold. The value of resistance is

a.

100 ฮฉ

b.

1000 ฮฉ

c.

1000 ฮฉ ± 5%

d.

1000 ฮฉ ± 10%

Discuss
Answer: (c).1000 ฮฉ ± 5%
Q287.
M = (ฮผแตฃ - 1)H.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q288.
Silicon and germanium are elements in the

a.

second column of periodic table

b.

third column of periodic table

c.

fourth column of periodic table

d.

fifth column of periodic table

Discuss
Answer: (c).fourth column of periodic table
Q289.
A sample of N type semiconductor has an electron density of 6.25 x 10¹โธ/cm³ at 300 K. If intrinsic concentration of carriers in this sample is 2.5 x 10¹³/cm³ at this temperature, the hole density is

a.

10โถ / cm³

b.

10โธ / cm³

c.

10¹แดผ / cm³

d.

10¹² / cm³

Discuss
Answer: (b).10โธ / cm³
Q290.
Assertion (A): In a conductor, current density remains constant in time as long as E is constant.

Reason (R): In a conductor, J = ฯƒE.

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: (a).Both A and R are true and R is correct explanation of A
Page 29 of 44