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 26 of 44

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Q251.
For a superconductor, the relative permeability is

a.

zero

b.

high

c.

low

d.

either low or high

Discuss
Answer: (a).zero
Q252.
The relative permeability of a ferromagnetic material is

a.

1

b.

less than 1

c.

about 10

d.

1000 or more

Discuss
Answer: (d).1000 or more
Q253.
Assertion (A): Intrinsic resistivity of silicon is lower than that of germanium.

Reason (R): Magnitude of free electron concentration in germanium is more than that of silicon.

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: (d).A is false but R is true
Q254.
The units for ∈ᡣ are

a.

Farads

b.

Farads/m

c.

kV/mn

d.

no units

Discuss
Answer: (d).no units
Q255.
The real part of complex dielectric constant and tanΞ΄ for a dielectric are 2.1 and 5 x 10¯β΄ at 100 Hz respectively. The imaginary part of dielectric constant at 100 Hz is

a.

1.05 x 10¯³

b.

2.1 x 10¯³

c.

5 x 10¯³

d.

1.05 x 10¯²

Discuss
Answer: (a).1.05 x 10¯³
Q256.
A copper atom is neutral. Its core has a net charge of

a.

0

b.

+ 1

c.

- 1

d.

+ 2

Discuss
Answer: (b).+ 1
Q257.
As the temperature of semiconductor is increased

a.

the average number of free charge carriers decreases

b.

the average number of free charge carriers increases

c.

the average number of free charge carriers remains the same

d.

the average number of free charge carriers may increase or decrease

Discuss
Answer: (b).the average number of free charge carriers increases
Q258.
In anti-ferromagnetic materials, the graph of susceptibility versus temperature shows a sharp maximum at a certain temperature. This temperature is known as

a.

Curie temperature

b.

Neel temperature

c.

Weiss temperature

d.

Bitter temperature

Discuss
Answer: (b).Neel temperature
Q259.
The wavelength of light emitted by GaAs laser is 8670 x 10¯¹α΄Ό m. If h = 6.626 x 10¯³β΄ Js, velocity of light = 3 x 10⁸ m/s and eV = 1.602 x 10¯¹βΉ J, the energy gap in GaAs is

a.

0.18 eV

b.

0.7 eV

c.

1.43 eV

d.

2.39 eV

Discuss
Answer: (c).1.43 eV
Q260.
Diamagnetic materials do not have permanent magnetic dipoles.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
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