Strength of Materials MCQs Set-2

Page 1 of 4

1.

The area under the stress-strain curve represents

energy required to cause failure

hardness of material

toughness of material

breaking strength of material

2.

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

unpredictable

same

more

less

3.

The total strain energy stored in a body is termed as

proof resilience

resilience

impact energy

modulus of resilience

4.

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

volumetric strain

lateral strain

shear strain

linear strain

5.

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

no stresses

thermal stresses

compressive stresses

tensile stresses

6.

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

four

two

six

three

7.

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

Cast iron

Lead

Wood

Concrete

8.

The state of pure shear stress is produced by

none of these

equal tension in two directions at right angles

tension in one direction and equal compression in perpendicular direction

equal compression in two directions at right angles

9.

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

10.

The shear stress at the centre of a circular shaft

zero

unpredictable

minimum

maximum

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11.

The neutral axis in curved beams

lies at the top of the beam

lies at the bottom of the beam

coincides with the geometric axis

does not coincide

12.

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

No stress

Tensile stress

Bending

thermal stresses

13.

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

Shear

Volumetric

Lateral

Linear

14.

Which of the following are statically indeterminate beams?

Both (a) and (b)

b) Continuous beam

None of these

a) Fixed beam

15.

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

Double

Half

One-fourth

16.

Strain energy is the

maximum strain energy which can be stored in a body

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

proof resilience per unit volume of a material

energy stored in a body when strained within elastic limits

17.

Stress at the boundary of kern

any value

zero

minimum

maximum

18.

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

at the mid span

at the supports

under the load

anywhere on the beam

19.

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

Resilience

None of these

Modulus of elasticity

Proof resilience

20.

Proof stress is related to

yielding

necking

fracture

elongation

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21.

The hoop stresses are acting across the

longitudinal section

none of these

circumferential section

radial section

22.

A beam is said to be uniform strength if

every horizontal plane

the shear stress is the same throughout the beam

the bending moment is the same throughout the beam

the deflection is the same throughout the beam

23.

Where are the steel bars in a concrete beam embedded?

Uniformly

Near bottom section

Near top section

In the centre

24.

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

maximum shear stress

maximum principal stress

maximum strain energy

maximum shear strain energy

25.

In curved beams the distribution of bending stress is

Parabolic

Uniform

Linear

Hyperbolic

26.

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

Young's modulus

Stress

None of these

Strain

27.

Principle planes are planes having

minimum shear stress

maximum shear stress

none of these

no shear stress

28.

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

cubic parabola

quadratic parabola

catenary

arc of a circle

29.

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

proof resilience

impact energy

modulus of resilience

resilience

30.

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

none of these

zero

unity

infinity

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31.

The thermal stress in a bar is directly proportional to

its cross-sectional area

none of these

its volume

the change in temperature

32.

The volumetric strain is the ratio of the

change in thickness to the original thickness

change in volume to the original volume

original thickness to the change in thickness

original volume to the change in volume

33.

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

none of these

always at the mid span

under the load only

at a support

34.

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

35.

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

resilience

malleability

ductility

toughness

Strength of Materials MCQs Set-2

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Strength of Materials MCQs Set-2

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