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 5 of 44

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Q41.
If e is the charge of an electron, R is the radius of its orbit and ฯ‰ is the angular velocity of electron, the magnetic dipole moment ฮผm of the orbit is |ฮผm| = eฯ‰R².

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (b).False
Q42.
If a piece of wood is placed in a magnetic field

a.

the magnetic field will not be affected

b.

the magnetic lines of force will bend towards the piece

c.

the magnetic lines of force will bend away from the piece

d.

the flux may increase or decrease

Discuss
Answer: (a).the magnetic field will not be affected
Q43.
The number of valence electrons in donor impurity are

a.

5

b.

4

c.

3

d.

1

Discuss
Answer: (a).5
Q44.
In a true valence crystal, the bonding between the atoms is accomplished by the sharing of valence electrons.

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q45.
Which of the following are donor impurities?

1. Gold
2. Phosphorus
3. Boron
4. Antimony
5. Arsenic
6. Induim

Select the correct answer using the following codes

a.

1, 2, 3

b.

1, 2, 4, 6

c.

3, 4, 5, 6

d.

2, 4, 5

Discuss
Answer: (d).2, 4, 5
Q46.
If n denotes principal quantum number, the angular quantum number l = 0, 1... (n - 1).

a.

True

b.

False

c.

May be True or False

d.

Can't say

Discuss
Answer: (a).True
Q47.
Assertion (A): In a perfect capacitor, the current density is given by ฯ‰ โˆˆโ‚€E0โˆˆ'rcos(ฯ‰t + 90°), where โˆˆแตฃ' is real part of dielectric constant.
Reason (R): In a perfect capacitor, dielectric losses are zero.

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
Q48.
Assertion (A): For a solenoid having N turns, B = µโ‚€µแตฃNI/L .
Reason (R): For all magnetic materials, B increases linearly with I.

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
Q49.
Assertion (A): If E is available energy state eV and EF is Fermi level, then probability of energy state E being occupied = 0.5.Reason (R): .

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
Q50.
A parallel plate capacitor has its length, width and separation doubled. It fringing effects are neglected, to keep the capacitance same, the dielectric constant must be

a.

halved

b.

kept the same

c.

doubled

d.

made 4 times

Discuss
Answer: (a).halved
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