Free Printable Mech 2 Mid Exam

1.

Stress is

a)

External force

b)

Internal resistive force

c)

Axial force

d)

Radial force

2.

Following are the basic types of stress except

(a)Tensile stress

(b)Compressive stress

(c)Shear stress

(d)Volumetric stress

a)

A

b)

B

c)

C

d)

D

3.

Which of the following is not a basic type of strain?

(a)Compressive strain

(b)Shear strain

(c)Area strain

(d)Volume strain

a)

A

b)

B

c)

C

d)

D

4.

Tensile Strain is

(a)Increase in length / original length

(b)Decrease in length / original length

(c)Change in volume / original volume

(d)All of the above

a)

A

b)

B

c)

C

d)

D

5.

Compressive Strain is

(a)Increase in length / original length

(b)Decrease in length / original length

(c)Change in volume / original volume

(d)All of the above

a)

A

b)

B

c)

C

d)

D

6.

Hooke’s law is applicable within

(a)Elastic limit

(b)Plastic limit

(c)Fracture point

(d) Ultimate strength

a)

A

b)

B

c)

C

d)

D

7.

Young’s Modulus of elasticity is

(a)Tensile stress / Tensile strain

(b)Shear stress / Shear strain

(c)Tensile stress / Shear strain

(d)Shear stress / Tensile strain

a)

A

b)

B

c)

C

d)

D

8.

Modulus of rigidity is

(a)Tensile stress / Tensile strain

(b)Shear stress / Shear strain

(c)Tensile stress / Shear strain

(d)Shear stress / Tensile strain

a)

A

b)

B

c)

C

d)

D

9.

Bulk modulus of elasticity is

a. Tensile stress / Tensile strain

b. Shear stress / Shear strain

c. Tensile stress / Shear strain

d. Normal stress on each face of cube / Volumetric strain

a)

A

b)

B

c)

C

d)

D

10.

Factor of safety is

a. Tensile stress / Permissible stress

b. Compressive stress / Ultimate stress

c. Ultimate stress / Permissible stress

d. Ultimate stress / Shear stress

a)

A

b)

B

c)

C

d)

D

11.

The deformation per unit length is called

(a) Strain

(b) Stress

(c) Elasticity

(d) None of these

a)

A

b)

B

c)

C

d)

D

12.

The ability of the material to deform without breaking is called

(a) Elasticity

(b) Plasticity

(c) Creep

(d) None of these

a)

A

b)

B

c)

C

d)

D

13.

Which of the following material is more elastic?

(a) Rubber

(b) Glass

(c) Steel

(d) Wood

a)

A

b)

B

c)

C

d)

D

14.

The stress at which extension of a material takes place more quickly as compared to

increase in load, is called

(a) No elastic zone

(b) Plastic point

(c) Yield point

(d) Breaking point

a)

A

b)

B

c)

C

d)

D

15.

A brittle material has

(a) No elastic zone

(b) No plastic zone

(c) Large plastic zone

(d) None of these

a)

A

b)

B

c)

C

d)

D

16.

The unit m³is a unit of:

a)

a. Volume

b)

b. Mass

c)

c. Density

d)

d. Area

17.

Which one of these represents Hookes law?

a)

A

b)

B

c)

C

d)

D

18.

$\tau$ is the symbol for

a)

normal stress

b)

strain

c)

shear stress

d)

young modulas

19.

What relationship exists between applied force and strain?

a)

direct

b)

indirect

c)

none at all

20.

What is the resultant force?

a)

30 N, Left

b)

25 N, Right

c)

5 N, Left

d)

55 N, Right

21.

A 1-m long cord is pulled by a force causing its length to change by 2mm. Determine the strain.

a)

0.2

b)

0.02

c)

0.002

22.

The angle between the plane of maximum shear stress and the plane of maximum normal stress is

a)

0˚

b)

60˚

c)

90˚

d)

45˚

23.

9. What is the unit of measurement for pressure?

a)

a. pascal

b)

b. grams

c)

c. milliters

d)

d. meters

24.

A g or kg is a unit of:

a)

a. Mass

b)

b Volume.

c)

c. Density

d)

d. Area

25.

Rapture stress is

(A) Breaking stress

(B) Load at the breaking point/Neck area

(C) Maximum Stress

a)

A

b)

B

c)

C

26.

The property of the material which allows it to be drawn into smaller section

(a) Plasticity

(b) Ductility

(c) Elasticity

(d) Malleability

a)

A

b)

B

c)

C

d)

D

27.

With the increase of carbon content in steel, maximum stress

(A) Increases

(b) Decreases

(C) Remains the same

(d) none

a)

A

b)

B

c)

C

d)

D

28.

Breaking stress is

(a) greater than the ultimate stress

(b) Less than the ultimate stress

(c) equal to the ultimate stress

(d) None

a)

A

b)

B

c)

C

d)

D

29.

Brittleness is opposite to

(a) Toughness

(b) Plasticity

(c) Malleability

(d) None of these

a)

A

b)

B

c)

C

d)

D

30.

A perfectly elastic body

(a) Can move freely

(b) Has perfectly smooth surface

(c) Is not deformed by any external surface

(d) Recovers its original size and shape when the deforming force is removed.

a)

A

b)

B

c)

C

d)

D

31.

What are we studying in mechanic of materials?

a)

The properties of materials and how they response to loads.

b)

The behavior of materials properties when a normal or shear stress is applied.

c)

The relation between internal and external loads applied to a body and how this loads can impact in its deformation and stability.

32.

What is the difference between statics and mechanics of materials?

a)

Mechanics of materials takes into account that a body deforms when a load is applied while statics just considers an undeformed body.

b)

Mechanics of materiel considers the properties of solid bodies which suffer a deformation due to various types of loading and statics considers the forces and moments which a rigid body suffers.

c)

Statics calculates forces and moments and mechanics of materials considers stress calculation.

33.

Force applied parallel to the surface of and object

a)

Tensile

b)

Shear

c)

Torsion

34.

Force applied perpendicular to the surface of and object

a)

Compression

b)

Shear

c)

Flexion

35.

What are the assumptions in mechanics of materials?

a)

Body is homogeneous, isotropic, elastic and prismatic

b)

Body is homogeneous, polytropic, elastic and prismatic.

c)

Body is homogeneous, anisotropic, elastic and prismatic

Mech 2 Mid Exam

Total questions: 35

Worksheet time: 25mins

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