Strength of Materials MCQs Set-2

Page 1 of 4

1.

Stress at the boundary of kern

any value

minimum

zero

maximum

2.

In curved beams the distribution of bending stress is

Linear

Uniform

Hyperbolic

Parabolic

3.

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

toughness

resilience

ductility

malleability

4.

The neutral axis in curved beams

does not coincide

lies at the bottom of the beam

coincides with the geometric axis

lies at the top of the beam

5.

Where are the steel bars in a concrete beam embedded?

Uniformly

Near bottom section

Near top section

In the centre

6.

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

same

less

unpredictable

more

7.

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

thermal stresses

Tensile stress

Bending

No stress

8.

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

arc of a circle

quadratic parabola

cubic parabola

catenary

9.

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

modulus of resilience

proof resilience

impact energy

resilience

10.

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

Wood

Concrete

Cast iron

Lead

Page 2 of 4

11.

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

Lateral

Volumetric

Shear

Linear

12.

The hoop stresses are acting across the

longitudinal section

none of these

radial section

circumferential section

13.

Which of the following are statically indeterminate beams?

Both (a) and (b)

None of these

b) Continuous beam

a) Fixed beam

14.

The area under the stress-strain curve represents

toughness of material

hardness of material

breaking strength of material

energy required to cause failure

15.

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

thermal stresses

tensile stresses

compressive stresses

no stresses

16.

Strain energy is the

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

energy stored in a body when strained within elastic limits

maximum strain energy which can be stored in a body

proof resilience per unit volume of a material

17.

A beam is said to be uniform strength if

the shear stress is the same throughout the beam

the deflection is the same throughout the beam

the bending moment is the same throughout the beam

every horizontal plane

18.

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

Strain

None of these

Young's modulus

Stress

19.

The total strain energy stored in a body is termed as

impact energy

resilience

modulus of resilience

proof resilience

20.

Principle planes are planes having

minimum shear stress

none of these

maximum shear stress

no shear stress

Page 3 of 4

21.

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

Lateral strain

Shear strain

Volumetric strain

None of these

22.

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

linear strain

lateral strain

shear strain

volumetric strain

23.

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

Half

One-fourth

Same amount

Double

24.

Proof stress is related to

yielding

necking

fracture

elongation

25.

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

at a support

under the load only

always at the mid span

none of these

26.

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

maximum shear stress

maximum strain energy

maximum principal stress

maximum shear strain energy

27.

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

at the mid span

anywhere on the beam

at the supports

under the load

28.

The thermal stress in a bar is directly proportional to

the change in temperature

its volume

none of these

its cross-sectional area

29.

The state of pure shear stress is produced by

tension in one direction and equal compression in perpendicular direction

none of these

equal compression in two directions at right angles

equal tension in two directions at right angles

30.

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

infinity

none of these

unity

zero

Page 4 of 4

31.

Neutral plane of a beam

Lies at bottom most fibre

Passes through the CG

Is one whose length remains unchanged during the deformation

None of these

32.

The shear stress at the centre of a circular shaft

maximum

minimum

unpredictable

zero

33.

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

three

four

six

two

34.

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

Proof resilience

Resilience

Modulus of elasticity

None of these

35.

The volumetric strain is the ratio of the

original thickness to the change in thickness

change in thickness to the original thickness

change in volume to the original volume

original volume to the change in volume

Strength of Materials MCQs Set-2

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