Strength of Materials MCQs Set-2

Page 1 of 4

1.

When a beam is loaded the horizontal or longitudinal shear should be accounted for materials like

Concrete

Cast iron

Lead

Wood

2.

The total strain energy stored in a body is termed as

resilience

proof resilience

modulus of resilience

impact energy

3.

The unit of Young's modulus is same as that of

Stress

None of these

Young's modulus

Strain

4.

The maximum strain energy that can be stored in a body is known as

resilience

impact energy

modulus of resilience

proof resilience

5.

Which of the following are statically indeterminate beams?

b) Continuous beam

a) Fixed beam

None of these

Both (a) and (b)

6.

According to Rankin's hypothesis, the criterion of failure of a brittle material is

maximum strain energy

maximum principal stress

maximum shear strain energy

maximum shear stress

7.

The state of pure shear stress is produced by

equal compression in two directions at right angles

none of these

equal tension in two directions at right angles

tension in one direction and equal compression in perpendicular direction

8.

Where are the steel bars in a concrete beam embedded?

Near bottom section

Uniformly

Near top section

In the centre

9.

If a material expands freely due to heating, it will develop

tensile stresses

thermal stresses

compressive stresses

no stresses

10.

Young's modulus of elasticity for a perfectly rigid body is

infinity

none of these

unity

zero

Page 2 of 4

11.

In curved beams the distribution of bending stress is

Uniform

Parabolic

Linear

Hyperbolic

12.

A prismatic bar when subjected to pure bending assumes the shape of

catenary

arc of a circle

quadratic parabola

cubic parabola

13.

A beam is said to be uniform strength if

the bending moment is the same throughout the beam

the deflection is the same throughout the beam

every horizontal plane

the shear stress is the same throughout the beam

14.

Strain in a direction at right angle to the direction of applied force is known as

Volumetric strain

None of these

Lateral strain

Shear strain

15.

The neutral axis in curved beams

lies at the top of the beam

coincides with the geometric axis

lies at the bottom of the beam

does not coincide

16.

The maximum bending moment due to a moving load on a fixed ended beam occurs

at a support

always at the mid span

none of these

under the load only

17.

Neutral plane of a beam

None of these

Passes through the CG

Is one whose length remains unchanged during the deformation

Lies at bottom most fibre

18.

Stress at the boundary of kern

maximum

any value

minimum

zero

19.

The strain energy stored in a body due to external loading, within the elastic limit is known as

ductility

toughness

malleability

resilience

20.

Strain energy is the

energy stored in a body when strained upto the breaking of a specimen

maximum strain energy which can be stored in a body

proof resilience per unit volume of a material

energy stored in a body when strained within elastic limits

Page 3 of 4

21.

The ultimate tensile stress of mild steel compared to ultimate compressive stress is

less

more

same

unpredictable

22.

The volumetric strain is the ratio of the

change in thickness to the original thickness

original volume to the change in volume

original thickness to the change in thickness

change in volume to the original volume

23.

The strain energy stored by the body within elastic limit when loaded externally is called as

Modulus of elasticity

Proof resilience

Resilience

None of these

24.

The shear stress at the centre of a circular shaft

zero

unpredictable

minimum

maximum

25.

Young's modulus of a wire is defined as the stress which will increase the length of wire compared to its original length by

Same amount

Half

Double

One-fourth

26.

Principle planes are planes having

minimum shear stress

none of these

no shear stress

maximum shear stress

27.

If a material expands freely due to heating, it will develop

thermal stresses

Bending

Tensile stress

No stress

28.

The area under the stress-strain curve represents

energy required to cause failure

breaking strength of material

hardness of material

toughness of material

29.

For a linearly elastic, isotropic and homogeneous material the number of elastic constants require to relate stress and strain is

three

four

two

six

30.

The deformation of the bar per unit length in the direction of the force is known as

lateral strain

shear strain

volumetric strain

linear strain

Page 4 of 4

31.

The maximum bending moment due to a moving load on a simply supported beam, occurs

anywhere on the beam

at the mid span

under the load

at the supports

32.

The hoop stresses are acting across the

none of these

radial section

longitudinal section

circumferential section

33.

The thermal stress in a bar is directly proportional to

the change in temperature

its volume

its cross-sectional area

none of these

34.

Proof stress is related to

elongation

yielding

necking

fracture

35.

___________strain is the deformation of the bar per unit length in the direction of the force.

Shear

Volumetric

Linear

Lateral

Strength of Materials MCQs Set-2

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