Physical Testing in Materials Science: Interactive Quizzes for Advanced Diploma Students

Question 1

To specifically measure the electrical conductivity of a material, which technique is employed?

Accepted Answer

Four-point probe method

Answer

Pycnometer method

Answer

Thermal conductivity meter method

Answer

Vickers hardness test method

Question 2

Which of the following methods is used to measure the density of a solid object accurately?

Accepted Answer

Density Gradient Column

Answer

Microscale Thermal Analysis

Answer

Atomic Force Microscopy

Answer

Scanning Electron Microscopy

Question 3

What is the SI unit of thermal conductivity commonly used in scientific calculations?

Accepted Answer

Watts per meter per Kelvin

Answer

Joules per meter per second per Kelvin

Answer

Calories per gram per degree Celsius

Answer

British Thermal Units per hour per square foot per degree Fahrenheit

Question 4

What is the primary purpose of a Vickers hardness test?

Accepted Answer

Measuring a material's resistance to permanent deformation

Answer

Determining a material's elastic modulus

Answer

Measuring a material's yield strength

Answer

Measuring a material's fracture toughness

Question 5

Which of the following factors does NOT influence the electrical conductivity of a material?

Accepted Answer

Strength of an applied magnetic field

Answer

Temperature

Answer

Presence of impurities

Answer

Crystal structure

Question 6

What is the key difference between elastic and plastic deformation?

Accepted Answer

Elastic deformation is temporary, while plastic deformation is permanent.

Answer

Plastic deformation is temporary, while elastic deformation is permanent.

Answer

Elastic deformation involves a change in shape, while plastic deformation involves a change in volume.

Answer

Plastic deformation involves a change in shape, while elastic deformation involves a change in volume.

Question 7

Which material is known for its exceptionally high thermal conductivity?

Accepted Answer

Copper

Answer

Wood

Answer

Rubber

Answer

Glass

Question 8

Which of the following methods is NOT commonly used for measuring the optical properties of materials?

Accepted Answer

Atomic Force Microscopy

Answer

Refractometer

Answer

Spectrophotometer

Answer

Ellipsometer

Question 9

What is the fundamental difference between a brittle and a ductile material?

Accepted Answer

Brittle materials fail abruptly, while ductile materials deform significantly before failure.

Answer

Ductile materials fail abruptly, while brittle materials deform significantly before failure.

Answer

Brittle materials have a higher yield strength than ductile materials.

Answer

Ductile materials have a higher yield strength than brittle materials.

Question 10

The unit of thermal conductivity, which quantifies a material's ability to transfer heat, is:

Accepted Answer

W/m-K

Answer

J/m-K

Answer

m/W-K

Answer

K/m-W

Question 11

Among the given options, which material exhibits the property of diamagnetism, where it weakly repels magnetic fields?

Accepted Answer

Aluminium

Answer

Iron

Answer

Copper

Answer

Nickel

Question 12

In material testing, what is the primary purpose of a pycnometer?

Accepted Answer

Accurately determining the density of a solid

Answer

Measuring the volume of a liquid

Answer

Measuring the viscosity of a fluid

Answer

Measuring the surface tension of a liquid

Question 13

Which of the listed properties is not significantly affected by changes in temperature?

Accepted Answer

Density

Answer

Electrical conductivity

Answer

Thermal expansion

Answer

Thermal conductivity

Question 14

In the context of material properties, the term that describes a material's ability to conduct electricity is:

Accepted Answer

Electrical conductivity

Answer

Electrical resistivity

Answer

Electrical permeability

Answer

Electrical capacitance

Question 15

Which of the following methods is a non-destructive testing technique used to characterize material properties without damaging the sample?

Accepted Answer

Ultrasonic testing

Answer

Tensile testing

Answer

Impact testing

Answer

Fatigue testing

Question 16

In the International System of Units (SI), the unit of magnetic permeability is:

Accepted Answer

Henry per meter (H/m)

Answer

Tesla (T)

Answer

Weber (Wb)

Answer

Ampere per meter (A/m)

Question 17

To determine the magnetic permeability of a ferromagnetic material, design an experiment using a gauss meter.

Accepted Answer

Apply a known magnetic field to the material and measure the resulting magnetic flux density using a gauss meter.

Answer

Calculate the magnetic permeability from the measured magnetic susceptibility of the material.

Answer

Convert the inductance of the material, measured using an AC bridge, to magnetic permeability.

Answer

Estimate the magnetic permeability from the measured coercive force of the material.

Question 18

Which of these is a physical property of materials?

Accepted Answer

Density

Answer

Volume

Answer

Chemical reactivity

Answer

Shape

Question 19

Density of a material is defined as its

Accepted Answer

Mass per unit volume

Answer

Volume per unit mass

Answer

Mass per unit area

Answer

Volume per unit area

Question 20

The most common technique used to measure the thermal conductivity of materials is

Accepted Answer

Guarded hot plate

Answer

Vickers hardness test

Answer

Universal tensile testing

Answer

Charpy impact test

Question 21

The relationship between electrical conductivity and resistivity of a material is

Accepted Answer

Inversely proportional

Answer

Directly proportional

Answer

Not related

Answer

Proportional to the square root

Question 22

Which of these materials is non-magnetic?

Accepted Answer

Aluminium

Answer

Iron

Answer

Nickel

Answer

Cobalt

Question 23

The optical properties of a material determine its

Accepted Answer

Light absorption, reflection, and transmission

Answer

Electrical conductivity

Answer

Thermal expansion

Answer

Magnetic susceptibility

Question 24

The Vickers hardness test is primarily used to measure the

Accepted Answer

Hardness of materials

Answer

Tensile strength of materials

Answer

Impact toughness of materials

Answer

Fatigue strength of materials

Question 25

The Charpy impact test is mainly used to determine the

Accepted Answer

Toughness of materials

Answer

Hardness of materials

Answer

Tensile strength of materials

Answer

Wear resistance of materials

Question 26

Which of the following is not a typical method employed to determine the density of a material?

Accepted Answer

Strain gauge

Answer

Archimedes' principle

Answer

Pycnometer

Answer

Gas displacement

Question 27

What is the standard international unit for thermal conductivity?

Accepted Answer

W/(m∙K)

Answer

J/(m∙K)

Answer

J/(m∙s)

Answer

W/m

Question 28

Which of the following is a characteristic optical property of materials?

Accepted Answer

Refractive index

Answer

Thermal conductivity

Answer

Electrical resistivity

Answer

Tensile strength

Question 29

What is the key objective of employing non-destructive testing techniques in materials science?

Accepted Answer

Determining material properties without causing damage to the sample

Answer

Identifying defects and flaws

Answer

Measuring the strength of materials

Answer

Analyzing the chemical composition of materials

Question 30

Which of the following is a commonly used method for determining the tensile strength of a material?

Accepted Answer

Tensile testing machine

Answer

Vickers hardness test

Answer

Charpy impact test

Answer

Izod impact test

Question 31

What is the significance of toughness in the selection of materials?

Accepted Answer

It indicates the material's resistance to fracture

Answer

It determines the material's elasticity

Answer

It measures the material's hardness

Answer

It predicts the material's electrical conductivity

Question 32

Which of the following is an example of a composite material?

Accepted Answer

Carbon fiber reinforced polymer

Answer

Pure aluminum

Answer

Stainless steel

Answer

Glass

Question 33

What is the primary advantage of incorporating advanced materials into engineering applications?

Accepted Answer

Enhanced performance and efficiency

Answer

Reduced production costs

Answer

Simplified design processes

Answer

Increased environmental impact

Question 34

What is the SI unit of thermal conductivity?

Accepted Answer

W/(m·K)

Answer

cal/(s·cm·°C)

Answer

J/(m·s·K)

Question 35

Which property of a material is determined by its magnetic permeability?

Accepted Answer

Ability to transmit magnetic fields

Answer

Ability to resist magnetic fields

Answer

Ability to generate magnetic fields

Answer

Ability to store magnetic energy

Question 36

Which of the following optical properties measures a material's ability to reflect light?

Accepted Answer

Reflectance

Answer

Refractive index

Answer

Absorbance

Answer

Transmittance

Question 37

What is the main purpose of a tensile test?

Accepted Answer

Determine the material's strength and ductility

Answer

Analyze the material's microstructure

Answer

Measure the material's hardness

Question 38

Which of the following is a non-destructive testing method?

Accepted Answer

Ultrasonic testing

Answer

Fatigue testing

Answer

Hardness testing

Answer

Impact testing

Question 39

What is the significance of a material's yield strength?

Accepted Answer

It indicates the point beyond which permanent deformation will occur

Answer

It represents the ultimate stress the material can withstand

Answer

It determines the material's toughness

Question 40

What is the primary reason for using standardized testing procedures?

Accepted Answer

To ensure consistency and reliability of results

Answer

To decrease the cost of testing

Answer

To reduce the time required for testing