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

Wood

Cast iron

Lead

2.

Principle planes are planes having

no shear stress

maximum shear stress

minimum shear stress

none of these

3.

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

Linear

Shear

Lateral

Volumetric

4.

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

more

same

unpredictable

less

5.

The neutral axis in curved beams

coincides with the geometric axis

lies at the bottom of the beam

lies at the top of the beam

does not coincide

6.

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

anywhere on the beam

at the supports

under the load

at the mid span

7.

Where are the steel bars in a concrete beam embedded?

Uniformly

Near bottom section

Near top section

In the centre

8.

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

9.

The thermal stress in a bar is directly proportional to

its cross-sectional area

its volume

the change in temperature

none of these

10.

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

ductility

malleability

resilience

toughness

Page 2 of 4

11.

Proof stress is related to

elongation

yielding

fracture

necking

12.

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

catenary

arc of a circle

cubic parabola

quadratic parabola

13.

In curved beams the distribution of bending stress is

Uniform

Parabolic

Linear

Hyperbolic

14.

Neutral plane of a beam

None of these

Is one whose length remains unchanged during the deformation

Passes through the CG

Lies at bottom most fibre

15.

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

thermal stresses

tensile stresses

compressive stresses

no stresses

16.

The state of pure shear stress is produced by

equal compression in two directions at right angles

tension in one direction and equal compression in perpendicular direction

none of these

equal tension in two directions at right angles

17.

The area under the stress-strain curve represents

hardness of material

toughness of material

breaking strength of material

energy required to cause failure

18.

The volumetric strain is the ratio of the

change in volume to the original volume

change in thickness to the original thickness

original thickness to the change in thickness

original volume to the change in volume

19.

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

maximum principal stress

maximum strain energy

maximum shear stress

maximum shear strain energy

20.

The total strain energy stored in a body is termed as

resilience

impact energy

modulus of resilience

proof resilience

Page 3 of 4

21.

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

Proof resilience

None of these

Resilience

Modulus of elasticity

22.

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

Volumetric strain

Shear strain

None of these

Lateral strain

23.

The hoop stresses are acting across the

none of these

radial section

circumferential section

longitudinal section

24.

Which of the following are statically indeterminate beams?

a) Fixed beam

Both (a) and (b)

b) Continuous beam

None of these

25.

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

four

six

two

three

26.

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

linear strain

volumetric strain

lateral strain

shear strain

27.

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

zero

unity

none of these

infinity

28.

Strain energy is the

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

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

29.

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

No stress

Tensile stress

thermal stresses

Bending

30.

A beam is said to be uniform strength if

the bending moment is the same throughout the beam

every horizontal plane

the shear stress is the same throughout the beam

the deflection is the same throughout the beam

Page 4 of 4

31.

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

at a support

none of these

always at the mid span

under the load only

32.

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

Stress

Young's modulus

None of these

Strain

33.

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

proof resilience

impact energy

resilience

modulus of resilience

34.

The shear stress at the centre of a circular shaft

zero

unpredictable

maximum

minimum

35.

Stress at the boundary of kern

minimum

any value

zero

maximum

Strength of Materials MCQs Set-2

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