Strength of Materials MCQs Set-2

Page 1 of 4

1.

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

under the load

at the supports

at the mid span

anywhere on the beam

2.

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

Resilience

Proof resilience

None of these

Modulus of elasticity

3.

Proof stress is related to

fracture

yielding

necking

elongation

4.

The state of pure shear stress is produced by

tension in one direction and equal compression in perpendicular direction

equal tension in two directions at right angles

equal compression in two directions at right angles

none of these

5.

Principle planes are planes having

maximum shear stress

minimum shear stress

no shear stress

none of these

6.

Stress at the boundary of kern

any value

maximum

zero

minimum

7.

The thermal stress in a bar is directly proportional to

none of these

its cross-sectional area

its volume

the change in temperature

8.

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

9.

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

six

four

three

two

10.

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

Wood

Cast iron

Lead

Concrete

Page 2 of 4

11.

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

compressive stresses

no stresses

thermal stresses

tensile stresses

12.

The volumetric strain is the ratio of the

original volume to the change in volume

change in thickness to the original thickness

change in volume to the original volume

original thickness to the change in thickness

13.

The area under the stress-strain curve represents

hardness of material

energy required to cause failure

toughness of material

breaking strength of material

14.

The total strain energy stored in a body is termed as

proof resilience

modulus of resilience

impact energy

resilience

15.

The neutral axis in curved beams

lies at the top of the beam

does not coincide

coincides with the geometric axis

lies at the bottom of the beam

16.

Which of the following are statically indeterminate beams?

b) Continuous beam

Both (a) and (b)

a) Fixed beam

None of these

17.

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

volumetric strain

lateral strain

linear strain

shear strain

18.

The hoop stresses are acting across the

radial section

circumferential section

none of these

longitudinal section

19.

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

same

more

less

unpredictable

20.

The shear stress at the centre of a circular shaft

unpredictable

zero

minimum

maximum

Page 3 of 4

21.

In curved beams the distribution of bending stress is

Linear

Parabolic

Hyperbolic

Uniform

22.

A beam is said to be uniform strength if

the deflection is the same throughout the beam

every horizontal plane

the shear stress is the same throughout the beam

the bending moment is the same throughout the beam

23.

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

always at the mid span

under the load only

none of these

at a support

24.

Where are the steel bars in a concrete beam embedded?

In the centre

Near top section

Near bottom section

Uniformly

25.

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

zero

unity

infinity

none of these

26.

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

proof resilience

resilience

impact energy

modulus of resilience

27.

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

maximum shear stress

maximum shear strain energy

maximum principal stress

maximum strain energy

28.

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

One-fourth

Same amount

Double

Half

29.

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

thermal stresses

Tensile stress

No stress

Bending

30.

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

Volumetric

Shear

Linear

Lateral

Page 4 of 4

31.

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

None of these

Young's modulus

Stress

Strain

32.

Neutral plane of a beam

Passes through the CG

None of these

Is one whose length remains unchanged during the deformation

Lies at bottom most fibre

33.

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

None of these

Volumetric strain

Lateral strain

Shear strain

34.

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

arc of a circle

catenary

cubic parabola

quadratic parabola

35.

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

malleability

resilience

ductility

toughness

Strength of Materials MCQs Set-2

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