Free Printable CMS-1

1.

On a principal plane, shear stress is

a)

maximum

b)

zero

c)

negative

d)

cannot be said

2.

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˚

3.

What is the unit of strain?

a)

pascal

b)

meter

c)

no unit

d)

newton

4.

$\tau$ is the symbol for

a)

normal stress

b)

strain

c)

shear stress

d)

young modulas

5.

When a material is loaded within elastic limit, the material will regain its shape and size when the load is removed.

a)

Agree

b)

Disagree

6.

The tensile strength of ductile materials is __________ its compressive strength.

a)

equal to

b)

less than

c)

greater than

d)

none of the above

7.

When a body is subjected to a direct tensile stress (σ) in one plane, then maximum normal stress occurs at a section inclined at __________ to the normal of the section.

a)

0°

b)

30°

c)

45°

d)

90°

8.

Shear modulus is the ratio of

a)

linear stress to linear strain

b)

linear stress to lateral strain

c)

volumetric strain to linear strain

d)

shear stress to shear strain

9.

In the shear stress notation 'τ_xy', 'x'

and 'y' denotes

a)

plane and direction

respectively

b)

direction and plane

respectively

c)

axis and

plane respectively

d)

none of the above

10.

Sum of squares of three direction cosines of normal to a plane within a solid body is

a)

zero

b)

one

c)

two

d)

four

11.

If n and m are two normals of two principal planes, then

a)

n.m maybe 0

b)

n.m is always 0

c)

n.m=1

d)

none of the above

12.

If F is force, k is spring constant and x is extension, Hooke's Law tells us that:

a)

F=k/x

b)

x=Fk

c)

k=Fx

d)

F=kx

13.

A spring has a spring constant of 5N/cm. What is its extension when loaded with 15N?

a)

4cm

b)

5cm

c)

3m

d)

3cm

14.

Which of the following does NOT determine shear modulus?

a)

Force

b)

Area

c)

Shear strain

d)

Volume

15.

Increasing shearing force on a steel metal sheet results to lesser shear strain.

a)

True

b)

False

16.

In a biaxial state of stress, sigma_x=60 MPa, sigma_y= 40 Mpa, τ_xy= √21 Mpa. The maxium principal stress will be

a)

60 Mpa

b)

61 Mpa

c)

40 Mpa

d)

21 Mpa

17.

Compressibility is the inverse of bulk modulus.

a)

True

b)

False

18.

Which of these cannot undergo deformation?

a)

Perfect body

b)

Elastic body

c)

Rigid body

d)

Fluid

19.

For the same amount of force applied, what is the stress on a given object if the surface area is halved?

a)

half the original

b)

remain unchanged

c)

twice the original

20.

If a material has identical properties in all directions, it is called

a)

Homogeneous

b)

Isotropic

c)

Orthotropic

d)

None of the above

21.

The generalised Hooke’s law equation connecting the strain to stress contains ___________ elastic constants.

a)

40

b)

38

c)

36

d)

25

22.

Number of independent elastic constants for anisotropic material is

a)

36

b)

21

c)

9

d)

2

23.

What is the formula of stress?

a)

$\sigma=FA$

b)

$\sigma=\frac{A}{F}$

c)

$\sigma=\frac{F}{A}$

d)

$\sigma=\frac{F}{A^2}$

24.

What is unit of stress?

a)

pascal

b)

pressure

c)

Newton

d)

Newton meter

25.

What is the formula of strain?

a)

$\epsilon=\frac{\delta L^2}{L}$

b)

$\epsilon=\frac{\delta L}{L^2}$

c)

$\epsilon=\frac{L}{\delta L}$

d)

$\epsilon=\frac{\delta L}{L}$

26.

What is the unit of strain?

a)

pascal

b)

meter

c)

no unit

d)

newton

27.

What is the formula of Young modulas?

a)

$E\ =\frac{\sigma}{\epsilon^2}$

b)

$E\ =\frac{\epsilon}{\sigma}$

c)

$E\ =\sigma\epsilon$

d)

$E\ =\frac{\sigma}{\epsilon}$

28.

And what is the unit of Young modulus itself?

a)

newton

b)

pascal

c)

Newton meter

d)

meter

29.

convert 10 km/min to m/sec

a)

$\frac{10km}{h}\ =\ \frac{1000m}{1km}\ \times\ \frac{1h}{3600\sec}$

b)

$\frac{10km}{h}\ =\ \frac{100m}{1km}\ \times\ \frac{1h}{3600\sec}$

c)

$\frac{10km}{h}\ =\ \frac{1000m}{1km}\ \times\ \frac{1h}{360\sec}$

d)

$\frac{10km}{h}\ =\ \frac{1km}{1000km}\ \times\ \frac{1h}{3600\sec}$

30.

$0.00045m\$ also can be writen as

a)

$4.5\ \times\ 10^{-4}$

b)

$4.5\ \times\ 10^{-5}$

c)

$4.5\ \times\ 10^4$

d)

$4.5\ \times\ 10^5$

31.

Explain normal stress

a)

stress which acts perpendicular, or normal to, the cross section of the load-carrying member.

b)

branch of applied mechanics that deals with the behavior of solid bodies subjected to various types of loading

c)

is a general term that refers to the capacity of a structure to resist loads.

d)

The ratio of the actual

strength to the required strength

32.

Define the meaning of thin wall pressure vessels

a)

A pressurized sphere is subjected to uniform tensile stresses in all directions

b)

•vessel having an inner-radius-to-wall-thickness ratio of 10 or 1/10 of the radius of the container

c)

a closed structure containing liquids or gases under pressure

d)

Stresses that act tangentially to the curved surface of a shell

33.

Explain shear stress.

a)

is a load directed along the axis of the member

b)

section taken perpendicular to the longitudinal axis of the bar

c)

elongation per unit length

d)

stress which acts tangent to the cross section of the load-carrying member

34.

Define the meaning of torsion

a)

the polar moment of inertia of the cross-sectional area

b)

the outer radius of the shaft

c)

a moment that twists/deforms a member about its longitudinal axis

d)

Section the shaft perpendicular to its axis at the point where the shear stress is to be determined

35.

What is the type of this beam

a)

Cantilevered beam

b)

Overhanging beam

c)

Simply supported beam

d)

Fixed beam

36.

1.Following are the basic types of stress except

a)

Tensile stress

b)

Compressive stress

c)

Shear stress

d)

Volumetric stress

37.

2.The bending moment diagram for a simply supported beam carrying a uniformly distributed load of w per unit length, will be

a)

a horizontal line

b)

a vertical line

c)

an inclined line

d)

a parabolic curve

38.

3.A shaft is said to be in pure torsion if

a)

Turning moment is applied at one end and other end is free

b)

Turning force is applied at one end and other end is free

c)

Two opposite turning moments are applied to the shaft

d)

Combination of torsional load and bending load is applied to the shaft

39.

4.If diameter of a shaft is doubled the power transmitted capacity will be

a)

Either twice or half

b)

Four times

c)

Eight times

d)

SAME

40.

5.The volumetric modulus of elasticity is called

a)

Bulk modulus

b)

Shear modulus

c)

Proof modulus

d)

Young’s modulus

41.

8.The relation governing the torsional torque in circular shafts is

a)

T/r=τ/l=Gθ/J

b)

T/J=τ/r=Gθ/l

c)

T/J=τ/l=Gθ/r

d)

T/l=τ/r=Gθ/J

42.

What is the definition of beams?

a)

members that are straight and have supports

b)

members that are slender & support loadings applied perpendicular to their longitudinal axis

c)

members that are rectangular shape with mass

d)

members that are various type such as static load and impact load

43.

Which one is NOT the type of loading

a)

concentrated load

b)

concentrated moment

c)

uniformly separated load

d)

uniformly distributed load

44.

Which one is NOT the type of beams

a)

simply longitudinal beam

b)

simply supported beam

c)

cantilevered beam

d)

overhanging beam

45.

$\tau$ is the symbol for

a)

normal stress

b)

strain

c)

shear stress

d)

young modulas

46.

The positive area in Moment diagram shown that the beam is

a)

SMILING

b)

SOURING

c)

STRAIGHT

d)

COMPRESS

47.

The value of moment is negative shown that the rotation is

a)

clockwise

b)

anticlockwise

c)

left

d)

right

48.

What is the unit of Moment?

a)

N/m

b)

Pa

c)

Nm

d)

N

49.

It is the measure of the tendency of a force to cause rotation about a line or axis.

a)

moment

b)

momentum

c)

impulse

d)

torsion

50.

What is equilibrium means

a)

the force acting on the object are balanced against each other so that the object does not move

b)

the force acting on the object are higher than friction force so that the object does not move

c)

the force acting on the object are lower than friction force so that the object does not move

d)

the force acting on the object are same as weight so that the object does not move

CMS-1

Total questions: 50

Worksheet time: 44mins

Similar Resources on Wayground