Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

UNIT_I

Total questions: 32

Worksheet time: 20mins

Name
Class
Date
1.

The law which states that within elastic limits strain produced is proportional to the stress producing it is known as _____________

a)

Bernoulli’s law

b)

Hooke’s law

c)

Pascal's law

d)

Newton's law

2.

Ratio of lateral strain to longitudinal strain is called

a)

Bulk Modulus

b)

Youngs Modulus

c)

Poision Ratio

3.

In the case of an engineering material under unidirectional stress in the x- direction,the Poisson's ratio is equal to (symbols have the usual meanings)

a)

eyex\frac{e_y}{e_x}

b)

σxey\frac{σ_x}{e_y}

c)

σxσy\frac{σ_x}{σ_y}

d)

None of this

4.

A rod of length L and diameter D is subjected to a tensile load P. Which of the following is sufficient to calculate the resulting change in diameter?

a)

Young Modulus

b)

Shear Modulus

c)

Poisson Ratio

d)

Both shear Modulus and Young Modulus

5.

 Young's modulus is defined a

a)

Tensile strain/Tesnsile stress

b)

Tensile stress*Tensile strain

c)

Tensile stress/Tensile strain

d)

Length/area

6.

The limit beyond which the material does not behave elastically is known as

a)

Proportional limit

b)

Plastic limit

c)

Elastic limit

d)

Yield Point

7.

The unit of Young’s modulus of elasticity is:

a)

pascals

b)

metres

c)

dimension-less

d)

newtons

8.

A wire is stretched 3 mm by a force of 150 N. Assuming the elastic limit is not exceeded, the force that will stretch the wire 5 mm is:

a)

150 N

b)

90 N

c)

250 N

d)

450 N

9.

A steel wire W has a length l and a circular cross-section of radius r. When W hangs vertically and a load is attached to the bottom end, it extends by e.


Another wire X made from the same material has the same load attached to it.


Which length and radius for X will produce an extension of e/4 ?

a)

A

b)

B

c)

C

d)

D

10.

Two separate wires X and Y have the same original length and cross-sectional area.


The graph shows the extension ∆L produced in X and Y when the tensile force F applied to the wires is increased up to the point where they break.


Which statement is incorrect?

a)

For a given extension more energy is stored in X than in Y.

b)

The Young modulus of the material of wire Y is greater than that of wire X.

c)

Both wire X and wire Y obey Hooke’s law.

d)

Wire X has a greater breaking stress than wire Y.

11.

A sample of wire has a Young modulus E. A second sample of wire made from an identical material has three times the length and half the diameter of the first sample.


What is the Young modulus of the second sample of wire in terms of E?

a)

0.25E

b)

E

c)

6E

d)

12E

12.

A steel wire has a cross-sectional area 0.5 mm2. The Young modulus of steel is 2.0 × 1011 Pa. Assume the wire obeys Hooke’s law.


What load must be suspended from the wire to produce an extension which is 0.1% of the original length?

a)

40 N

b)

50 N

c)

100 N

d)

200 N

13.

The diagram shows how the stress varies with strain for metal specimens X and Y which are different. Both specimens were stretched until they broke.


Which of the following is incorrect?

a)

X is stiffer than Y

b)

X has a higher value of the Young modulus

c)

X is more brittle than Y

d)

Y has a lower maximum tensile stress than X

14.

The four bars A, B, C and D have diameters, lengths and loads as shown. They are all made of the same material. Which bar has the greatest extension?

a)

A

b)

B

c)

C

d)

D

15.

The formula for Bulk Modulus is

a)

σeV\frac{\sigma}{e_V}

b)

τeV\frac{\tau}{e_V}

c)

τϕ\frac{\tau}{\phi}

d)

Volumetric StressVolumetric strain\frac{Volumetric\ Stress}{Volumetric\ strain}

16.

The formula for Shear Modulus is

a)

σeV\frac{\sigma}{e_V}

b)

τeV\frac{\tau}{e_V}

c)

τϕ\frac{\tau}{\phi}

d)

Volumetric StressVolumetric strain\frac{Volumetric\ Stress}{Volumetric\ strain}

17.

A cylindrical rod of cross-sectional area A experienced pressure p due to a compressive force F. If the force applied is reduced to one-third what happens to pressure?

a)

also reduced to one-third

b)

tripled

c)

remains the same

18.

Given the Young's modulus of elasticity below rank the metals according to the magnitude of tensile stress it can hold from highest to lowest.

Aluminum 69 GPa

Brass 125 GPa

Steel 200 GPa

a)

Aluminum, Brass, Steel

b)

Brass, Aluminum, Steel

c)

Steel, Brass, Aluminum

19.

stress

a)

the process by which the shape of a rock changes because of stress

b)

the amount of force per square unit area on a given material

c)

stress that occurs when an object is stretched

d)

stress that occurs when an object is squeezed

20.

What is the process when stress causes a material to strain, but afterward the material returns to its original shape?

a)

Stress

b)

Strain

c)

Elastic Deformation

d)

Plastic Deformation

e)

Fault

21.

Which letter is pointing to the elastic limit?

a)

A

b)

B

c)

C

d)

D

22.

Stress-strain diagram has five stages in the material; select the correct sequence of the stages:

a)

Elastic region - Yielding - Strain hardening - Necking - Fracture

b)

Elastic region - Strain hardening - Yielding - Necking - Fracture

c)

Elastic region - Yielding - Necking - Strain hardening - Fracture

d)

Yielding - Elastic region - Necking - Strain hardening - Fracture

23.

Ductile materials are defined as:

a)

materials that can be subjected to large strains before it fractures

b)

materials that exhibit little or no yielding before failure

c)

materials that cannot be subjected to large strains

d)

materials that are elastic

24.

Example of brittle material:

a)

iron steel

b)

aluminium

c)

concrete

d)

copper

25.

Young's Modulus is measure of

a)

hardness

b)

stiffness

c)

ductility

d)

strength

26.

% elongation is

a)

measure of malleability

b)

measure of hardness

c)

measure of ductility

d)

all of these

27.

Which of the following is true?

a)

true stres is more than eng. stress but true strain is less than eng. strain

b)

true stres is less than eng. stress and true strain is less than eng. strain

c)

true stres is more than eng. stress and true strain is more than eng. strain

d)

true stres is less than eng. stress but true strain is more than eng. strain

28.
The ability of a material to deform, usually by stretching along its length. This property allows us to make wires.
a)
conductivity
b)
ductility
c)
malleability
d)
hardness
29.
The ability of a material to be shaped in all directions without cracking or breaking.
a)
hardness
b)
ductility
c)
malleability
d)
conductivity
30.
Brittle means...
a)
bends easily 
b)
breaks if you bend it 
c)
scratches easily
31.
______________________ is the material’s ability to return to its near original shape after a stress has been applied and removed.
a)
Ductility
b)
Brittleness
c)
Elasticity
d)
Hardness
32.

Which physical property best describes this object?

a)

brittle

b)

elasticity

c)

plasticity

d)

flexible

Similar Resources on Wayground

Ecology Chapter 12

27 questions

Ecology Chapter 12

quiz

Worksheet

•

University

ABO blood groups

27 questions

ABO blood groups

quiz

Worksheet

•

University

OSH1313

27 questions

OSH1313

quiz

Worksheet

•

University

RN-LAB VALUES

27 questions

RN-LAB VALUES

quiz

Worksheet

•

University

Waves Quiz

28 questions

Waves Quiz

quiz

Worksheet

•

6th Grade - University

G3 Life cycle and animals group

27 questions

G3 Life cycle and animals group

quiz

Worksheet

•

3rd Grade - University

KUIZ ANMS ONLINE JKN PERLIS

30 questions

KUIZ ANMS ONLINE JKN PERLIS

quiz

Worksheet

•

University

Health Quiz

35 questions

Health Quiz

quiz

Worksheet

•

11th Grade - University