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 7 of 44

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Q61.
The core of a coil has a length of 10 cm. The self inductance is 8 mH. If the core length is doubled, all other quantities remaining the same, the self inductance will be

a.

32 mH

b.

16 mH

c.

8 mH

d.

4 mH

Discuss
Answer: (d).4 mH
Q62.
The minority carrier life time and diffusion constant in a semiconducting material are 100 μs and 100 cm²/s respectively. The diffusion length of carriers is

a.

0.1 cm

b.

0.01 cm

c.

0.0141 cm

d.

1 cm

Discuss
Answer: (a).0.1 cm
Q63.
Assertion (A): Electronic and Ionic polarization in a polyatomic gas are independent of temperature.
Reason (R): The orientation polarization is independent of 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
Q64.
Two materials having temperature coefficients of 0.004 and 0.0004 respectively are joined in series. The overall temperature coefficient is likely to be

a.

0.08

b.

0.04

c.

0.001

d.

0.0001

Discuss
Answer: (c).0.001
Q65.
Diamond is a paramagnetic material.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q66.
Which capacitor-store higher amount of energy?

a.

Air capacitor

b.

Paper capacitor

c.

Mica capacitor

d.

Plastic film capacitor

Discuss
Answer: (c).Mica capacitor
Q67.
Above ferroelectric curie temperature, spontaneous polarization in ferroelectric materials becomes stronger.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q68.
In paramagnetic materials

a.

permanent magnetic dipoles exist but the interaction between neighbouring dipoles is negligible

b.

permanent magnetic dipole do not exist

c.

permanent magnetic dipoles exist and the interaction between neighbouring dipoles is very strong

d.

permanent magnetic dipole moment may or may not exist

Discuss
Answer: (a).permanent magnetic dipoles exist but the interaction between neighbouring dipoles is negligible
Q69.
Assertion (A): Atomic number of sodium is 11.
Reason (R): Sodium has a body centred cubic lattice.

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
Q70.
The number of valence electrons in pentavalent impurity is

a.

5

b.

4

c.

3

d.

1

Discuss
Answer: (a).5
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