Properties Of Materials Flashcards

1
Q

The mass of an engineering material per unit of volume is also known as

A

Density

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The thermal energy required to raise the temperature of unit mass by one degree measure by celsius , kalvin or fahrenheit is known as

A

Specific heat

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The quantity of heat transmitted per unit area by a material of a given thickness and temperature gradient is known as

A

Thermal conductivity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In general
, materials with high melting temperatures and strong bonds between atoms have a _________than materials with lower melting points and weaker bonds between atoms

A

Lower coefficient of thermal expansion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Electrical conductivity is an expression of how well materials conduct electrical current. Materials that can conduct electricity under certain circumstances and not others are called

A

Semiconductors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Electrical conductivity is an expression of how well materials conduct electrical current. Materials that are covalently bonded where the electrons are not free to move about to conduct electricity are called

A

Resistors

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Materials that exhibit a strong attraction to magnetic fields and are able to retain their magnetic properties even after the magnetic field had been removed are referred to as

A

Ferromagnetic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Which of the following materials is considered to be diamagnetic

A

Copper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Material that is clear and allows light to pass through is considered

A

Transparent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Material that is cloudy and only allows part of light to pass through is considered

A

Translucent

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Material that does not allow light to pass through is considered

A

Opaque

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The optical properties of a material refer to the response of the material to electromagnetic radiation, particularly

A

Visible light

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Metals are transparent to high-end frequencies of the electromagnetic spectrum, including which of the following?

A

X-rays

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When an applied load does not exceed yield strength of the material and the material returns to its original configuration after the load is removed, this is known as

A

Elastic deformation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When the load exceeds the yield strength of the material and the material does not return to its original configuration after the load is removed, this is known as

A

Plastic deformation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

One of the most common tests for evaluating the strength of a material is the

A

Tensile test

17
Q

The maximum energy that can be absorbed per unit volume without creating a permanent distortion is known as

A

modulus of resilience

18
Q

Whst material property is measured that is indicative of a material’s ability to resist permanent deformation or penetration with an indenter under load?

A

Hardness

19
Q

Vickers, knoop, Rockwell and Brinellvare all examples of what type of material property tests

A

Hardness

20
Q

The initiation of cracks at nucleation points, such as stress concentration points or inclusions, which begin to grow under cyclic loading until they are large enough to cause failure of a material, is called

A

Fatigue