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 17 of 44

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Q161.
Nichrome is used for

a.

overhead line wires

b.

heater coils

c.

lamp filaments

d.

all of the above

Discuss
Answer: (b).heater coils
Q162.
The electric dipole moment of a neutral system of point charges Q1, Q2.... is βˆ‘Qiri . The charges Qi

a.

must be all positive

b.

must be all negative

c.

must be such that βˆ‘Qi = 0

d.

either (a) or (b)

Discuss
Answer: (c).must be such that βˆ‘Qi = 0
Q163.
The class of insulation of impregnated paper is

a.

A

b.

B

c.

C

d.

F

Discuss
Answer: (a).A
Q164.
Assertion (A): The resistance of a copper specimen changes by about 22% when temperature is increased from room temperature to 700°C.

Reason (R): The physical properties of a material are determined mostly by the extent of impurities.

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
Q165.
Resistivity of rubber is about

a.

10² Ξ©-m

b.

10¯² Ξ©-m

c.

5 x 10⁸ Ω-m

d.

5 x 10¹² Ξ©-m

Discuss
Answer: (d).5 x 10¹² Ξ©-m
Q166.
An iron specimen has µα΅£ = 1000 when B = 0.3 T. If B = 0.35 T, µα΅£

a.

will be 1000

b.

will be less than 1000

c.

will be more than 1000

d.

may be more or less than 1000

Discuss
Answer: (d).may be more or less than 1000
Q167.
Which solid dielectric has highest temperature limit?

a.

E

b.

H

c.

C

d.

F

Discuss
Answer: (c).C
Q168.
Permeability is analogous to

a.

resistivity

b.

retentivity

c.

conductivity

d.

coercivity

Discuss
Answer: (c).conductivity
Q169.
The colour code on a carbon resistor is green-blue-yellow. The tolerance is

a.

± 5%

b.

± 10%

c.

± 20%

d.

± 30%

Discuss
Answer: (c).± 20%
Q170.
At a very low temperature, a semiconductor

a.

becomes a conductor

b.

becomes an insulator

c.

may become a conductor or an insulator

d.

will remain a semiconductor becomes a conductor or an insulator

Discuss
Answer: (b).becomes an insulator
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