1000 𝑀𝐶𝑄𝑠 𝑓𝑜𝑟 𝑅𝑅𝐵 𝐽𝐸 𝐶𝐵𝑇 2

Que. 1 Every material obeys

Hooke’s law within
a) Elastic Limit
b) Plastic limit
c) Limit of Proportionality
d) None of the above

Civil Engineering by Sandeep Jyani 2

Que. 1 Every material obeys
Hooke’s law within
a) Elastic Limit
b) Plastic limit
c) Limit of Proportionality
d) None of the above

Civil Engineering by Sandeep Jyani 3

 Hooke’s Law
• When a material is loaded within 𝝈 Elastic Limit.
elastic limit, the stress is Stress
proportional to the strain
produced by the stress upto Proportional Limit.
Proportional Limit.
Or
Strain 𝜺
• Ratio of the Stress to the
corresponding strain is constant
𝜎∝𝜀
upto Proportional Limit. 𝜎 = 𝐸𝜀
𝜎
• E= Young’s Modulus of Elasticity 𝐸=
or Modulus of Elasticity 𝜖

Civil Engineering by Sandeep Jyani 4

Que. 2 The ratio between
stress and strain is called
as
a) Modulus of elasticity
b) Modulus of rigidity
c) Bulk modulus
d) None of the above

Civil Engineering by Sandeep Jyani 5

Que. 2 The ratio between
stress and strain is called
as
a) Modulus of elasticity
b) Modulus of rigidity
c) Bulk modulus
d) None of the above

Civil Engineering by Sandeep Jyani 6

Que. 3 The % elongation of test
piece under tension indicates its
a) Brittleness
b) Malleability
c) Stiffness
d) Ductility

Civil Engineering by Sandeep Jyani 7

Que. 3 The % elongation of
test piece under tension
indicates its
a) Brittleness
b) Malleability Ductility
c) Stiffness
d) Ductility

Civil Engineering by Sandeep Jyani 8

Que. 4 A linear force deformation
relation is obtained in materials
a) Having elastic stress strain
property
b) Having plastic stress-strain
properties
c) Following Hooke’s law
d) Which are rigid elastic
materials

Civil Engineering by Sandeep Jyani 9

Que. 4 A linear force deformation
relation is obtained in materials
a) Having elastic stress strain
property
b) Having plastic stress-strain
properties
c) Following Hooke’s law
d) Which are rigid elastic
materials

Civil Engineering by Sandeep Jyani 10

Que. 5 If cross section area of a
bar is doubled, then elongation
due to self weight of the bar will
be…
a) Doubled
b) Halved
c) Remains same
d) Four times

Civil Engineering by Sandeep Jyani 11

Que. 5 If cross section area of a
bar is doubled, then elongation
due to self weight of the bar will
be…
a) Doubled
b) Halved
c) Remains same
d) Four times

Civil Engineering by Sandeep Jyani 12

Que. 6 If all the dimensions of a
bar are doubled, then elongation
due to self weight of the bar will
be…
a) Doubled
b) Halfed
c) Remains same
d) Four times

Civil Engineering by Sandeep Jyani 13

Que. 6 If all the dimensions of a
bar are doubled, then elongation
due to self weight of the bar will
be…
a) Doubled
b) Halfed
c) Remains same
d) Four times

Civil Engineering by Sandeep Jyani 14

Que. 7 The number of independent Elastic constants are
…..for a homogenous and Isotropic material

a) (E, 𝝁, K)
b) (E, G, 𝝁,)
c) (E, 𝝁,)
d) (G, 𝝁, K)

Civil Engineering by Sandeep Jyani 15

Que. 7 The number of independent Elastic constants are
…..for a homogenous and Isotropic material

Answer: two

a) (E, 𝝁, K)
b) (E, G, 𝝁,)
c) (E, 𝝁,)
d) (G, 𝝁, K)

Civil Engineering by Sandeep Jyani 16

 E2
2. Isotropic Material
• A material is said to be isotropic
when it shows same elastic E2
properties IN ANY GIVEN E1 B E2
DIRECTION AT A GIVEN POINT E2
E3
E1

E1
A E3

E1 C E3

E3

Civil Engineering by Sandeep Jyani 17

 E
3. Homogenous and Isotropic
Material
E
• A material is said to be
homogenous and isotropic when E B E
it shows same elastic properties E2
IN ANY GIVEN DIRECTION and AT E
E
ANY GIVEN POINT
E
A E

E C E

Civil Engineering by Sandeep Jyani 18

 E5
4. Anisotropic Material
• A material is said to be
anisotropic when it shows E7
different elastic properties IN E1 B E8
ANY GIVEN DIRECTION AT ANY E6
GIVEN POINT
E2

E3
A
E4

Civil Engineering by Sandeep Jyani 19

5. Orthotropic Material
• A material is said to be
orthotropic when it shows
different elastic properties IN 3 E1
ORTHOGONAL DIRECTION AT A
GIVEN POINT
• Total number of elastic constants
= 3 x 4 =12 E3

E2

Civil Engineering by Sandeep Jyani 20

Q. 8
The limit of Poisson’s ratio is:
a) 0.25
b) 0.15
c) 0.50
d) 0.65

Civil Engineering by Sandeep Jyani 21

Q. 9
The limit of Poisson’s ratio is:
a) 0.25
• 𝝁generally 0<= 𝝁<=0.5
b) 0.15
• 𝝁ideal -1<= 𝝁<=0.5
c) 0.50
d) 0.65

Civil Engineering by Sandeep Jyani 22

Q10.
Ductility of which of the
following is the maximum?
a) Mild steel
b) Cast iron
c) Carbon Steel
d) Pig iron

Civil Engineering by Sandeep Jyani 23

Q4.
Ductility of which of the following is
the maximum?
a) Mild steel
b) Cast iron • More the carbon
c) Carbon Steel content, more
compressive
d) Pig iron strength and less
tensile strength
• Mild steel has least
carbon content
0.05% to 0.25%

Civil Engineering by Sandeep Jyani 24

Carbon Content
𝑃𝑖𝑔 𝑖𝑟𝑜𝑛 (4−5%)
> 𝐶𝑎𝑠𝑡 𝐼𝑟𝑜𝑛(2−4.5%)
> 𝐶𝑎𝑠𝑡 𝑆𝑡𝑒𝑒𝑙 (>2%)
> 𝐶𝑎𝑟𝑏𝑜𝑛 𝑠𝑡𝑒𝑒𝑙 (𝑙𝑒𝑠𝑠 𝑡ℎ𝑎𝑛 2%)
> 𝐻𝑖𝑔ℎ 𝑐𝑎𝑟𝑏𝑜𝑛 𝑠𝑡𝑒𝑒𝑙 (0.6−1.4%)
>𝑀𝑒𝑑𝑖𝑢𝑚 𝑐𝑎𝑟𝑏𝑜𝑛(0.25−0.6%)
>𝑙𝑜𝑤 𝑐𝑎𝑟𝑏𝑜𝑛 𝑠𝑡𝑒𝑒𝑙 (𝑙𝑒𝑠𝑠 𝑡ℎ𝑎𝑛 0.25%)
> 𝑊𝑟𝑜𝑢𝑔ℎ𝑡 𝐼𝑟𝑜𝑛 (𝑙𝑒𝑠𝑠 𝑡ℎ𝑎𝑛 0.1%)
>𝑃𝑢𝑟𝑒 𝑖𝑟𝑜𝑛 (0%)

Civil Engineering by Sandeep Jyani 25

 Questions: Strength of Materials
Q11.
Relation between Young’s
modulus (E) and modulus of
rigidity (G) is given as
a) E = 3G (1+𝝁)
b) E = 2G (1 – 𝝁)
c) E = 2G (1 + 𝝁)
d) E = 3G (1 – 𝟐𝝁)

Civil Engineering by Sandeep Jyani 26

 Questions: Strength of Materials
Q11.
Relation between Young’s E= 𝟐𝑮 𝟏 + 𝝁
modulus (E) and modulus of
rigidity (G) is given as
E= 𝟑𝑲 𝟏 − 𝟐𝝁
a) E = 3G (1+𝝁)
b) E = 2G (1 – 𝝁) 𝟗𝑲𝑮
c) E = 2G (1 + 𝝁) 𝑬=
𝟑𝑲 + 𝑮
d) E = 3G (1 – 𝟐𝝁)

Civil Engineering by Sandeep Jyani 27

Q12.
The ratio of normal stress to
volumetric strain in defined as
a) Young’s modulus
b) Bulk Modulus
c) Rigidity Modulus
d) Tangent modulus

Civil Engineering by Sandeep Jyani 28

Q12.
The ratio of normal stress to
volumetric strain in defined as
a) Young’s modulus
b) Bulk Modulus 𝝈
𝑲 =
∆𝑽
c) Rigidity Modulus 𝑽
d) Tangent modulus

Civil Engineering by Sandeep Jyani 29

 Questions: Strength of Materials

Q13.
A material is called ductile if it
a) Has little plastic elongation
range
b) Has long plastic elongation
range
c) Could be hammered into a very
thin sheet
d) Shows large elastic strain

Civil Engineering by Sandeep Jyani 30

 Questions: Strength of Materials
Q13.
A material is called ductile if it P
a) Has little plastic elongation
range
b) Has long plastic elongation
range
c) Could be hammered into a very
thin sheet P
d) Shows large elastic strain

Civil Engineering by Sandeep Jyani 31

 Questions: Strength of Materials
Q. 14
Poisson’s ratio is defined as
a) Longitudinal strain/lateral strain
b) Lateral strain/longitudinal strain
c) Lateral strain × longitudinal strain
d) ½ (lateral strain) × (Longitudinal strain)

Civil Engineering by Sandeep Jyani 32

 Questions: Strength of Materials
Q. 14
Poisson’s ratio is defined as
a) Longitudinal strain/lateral strain
b) Lateral strain/longitudinal strain
c) Lateral strain × longitudinal strain
d) ½ (lateral strain) × (Longitudinal strain)
− 𝒍𝒂𝒕𝒆𝒓𝒂𝒍 𝒔𝒕𝒓𝒂𝒊𝒏
𝝁=
𝑳𝒐𝒏𝒈𝒊𝒕𝒖𝒅𝒊𝒏𝒂𝒍 𝑺𝒕𝒓𝒂𝒊𝒏

Civil Engineering by Sandeep Jyani 33

 Questions: Strength of Materials

Q. 15
Modulus of rigidity is expressed as
a) Compressive stress/compressive strain
b) Tensile stress/tensile strain
c) Shear stress/shear strain
d) Stress/volumetric strain

Civil Engineering by Sandeep Jyani 34

 Questions: Strength of Materials
Q. 15
Modulus of rigidity is expressed as
a) Compressive stress/compressive strain
b) Tensile stress/tensile strain
c) Shear stress/shear strain 𝝉
d) Stress/volumetric strain 𝑮 =
𝒚
𝑺𝒉𝒆𝒂𝒓 𝑺𝒕𝒓𝒆𝒔𝒔
𝑴𝒐𝒅𝒖𝒍𝒖𝒔 𝒐𝒇 𝒓𝒊𝒈𝒊𝒅𝒊𝒕𝒚 𝒐𝒓 𝑺𝒉𝒆𝒂𝒓 𝑴𝒐𝒅𝒖𝒍𝒖𝒔 =
𝑺𝒉𝒆𝒂𝒓 𝑺𝒕𝒓𝒂𝒊𝒏

Civil Engineering by Sandeep Jyani 35

 Questions: Strength of Materials
Q. 16
The ability of a material to absorb
energy till the elastic limit is
known as
a) Resilience
b) Ductility
c) Elasticity
d) Malleability

Civil Engineering by Sandeep Jyani 36

 Questions: Strength of Materials
Q. 16
The ability of a material to absorb
energy till the elastic limit is
known as
a) Resilience
b) Ductility
c) Elasticity
d) Malleability

Civil Engineering by Sandeep Jyani 37

 Questions: Strength of Materials
Q. 17
Creep of a material is
a) Not being ductile
b) To become brittle
c) Disappearance of deformation on
removal of load
d) Continued deformation with time
under sustained loading

Civil Engineering by Sandeep Jyani 38

 Questions: Strength of Materials
Q. 17
Creep of a material is
a) Not being ductile
b) To become brittle P
c) Disappearance of deformation on
removal of load
d) Continued deformation with time
under sustained loading Sustained loading
Time

Civil Engineering by Sandeep Jyani 39

 Questions: Strength of Materials
Q. 18
One cubic metre of mild steel weighs
about
a) 1000 kg
b) 3625 kg
c) 7850 kg
d) 12560 kg

Civil Engineering by Sandeep Jyani 40

 Questions: Strength of Materials

Q. 18
One cubic metre of mild steel weighs
about
a) 1000 kg
b) 3625 kg
c) 7850 kg
d) 12560 kg

Civil Engineering by Sandeep Jyani 41

 Questions: Strength of Materials
Q. 19
In Brunel Hardness test, the type of
indenter used is
a) Hard steel ball
b) Diamond cone
c) Mild steel ball
d) Hard steel cone

Civil Engineering by Sandeep Jyani 42

 Questions: Strength of Materials
Q. 19
In Brunel Hardness test, the type of
indenter used is P
a) Hard steel ball
b) Diamond cone
c) Mild steel ball
d) Hard steel cone

Civil Engineering by Sandeep Jyani 43

 Questions: Strength of Materials
Q. 20
Percentage increase of carbon in steel,
decreases its
a) Hardness
b) Ductility
c) Strength
d) Brittleness

Civil Engineering by Sandeep Jyani 44

 Questions: Strength of Materials
Q. 20
Percentage increase of carbon in
steel, decreases its
a) Hardness
b) Ductility
c) Strength
d) Brittleness

Civil Engineering by Sandeep Jyani 45

Q. 21
The weight of 10mm diameter mild
steel rod per metre length is equal to
a) 0.22 kg
b) 0.32 kg
c) 0.42 kg
d) 0.62 kg

Civil Engineering by Sandeep Jyani 46

Q. 21
The weight of 10mm diameter mild
steel rod per metre length is equal to
a) 0.22 kg
Density of mild steel = 7850 kg/m3
b) 0.32 kg
Weight of 1 metre long rod = 𝐯𝐨𝐥 × 𝒅𝒆𝒏𝒔𝒊𝒕𝒚
c) 0.42 kg 𝝅𝒅𝟐
= ( × 𝟏𝒎) × 7850
𝟒
d) 0.62 kg 𝝅(0.01)𝟐
=( × 1)
𝟒
= 0.62kg
Civil Engineering by Sandeep Jyani 47
 Questions: Strength of Materials
Q. 22
Match List – 1 with List 2
List – 1 List – 2
1. Young Modulus a) Lateral Strain to linear strain within elastic unit
2. Poisson’s Ratio b) Direct stress to normal strain within elastic limit.
3. Bulk Modulus c) Shear stress to shear strain within elastic limit.
4. Rigidity Modulus d) Direct stress to corresponding volumetric strain.

Civil Engineering by Sandeep Jyani 48

 Questions: Strength of Materials
Q. 22 1B, 2A, 3D, 4C
Match List – 1 with List 2
List – 1 List – 2
1. Young Modulus a) Lateral Strain to linear strain within elastic unit
2. Poisson’s Ratio b) Direct stress to normal strain within elastic
limit.
3. Bulk Modulus
c) Shear stress to shear strain within elastic limit.
4. Rigidity Modulus
d) Direct stress to corresponding volumetric strain.

Civil Engineering by Sandeep Jyani 49

 Questions: Strength of Materials
Q. 23
The ratio of young’s modulus to
modulus of rigidity for a material
having Poisson’s ratio 0.2 is
a) 2.4
b) 0.416
c) 0.357
d) 2.8

Civil Engineering by Sandeep Jyani 50

 Questions: Strength of Materials
Q. 23
The ratio of young’s modulus to
modulus of rigidity for a material
having Poisson’s ratio 0.2 is
E= 𝟐𝑮 𝟏 + 𝝁
a) 2.4
b) 0.416 E/G = 𝟐 𝟏 + 𝝁
c) 0.357 = 2(1+0.2)
d) 2.8 = 2.4

Civil Engineering by Sandeep Jyani 51

 Questions: Strength of Materials
Q.24 What will be the relation
between E (Young’s modulus of
Elasticity) and K (Bulk Modulus),
when Poisson’s ratio is 0.25?
a) E =K
b) E = 2K
c) E = 1.5K
d) E = K = 0

Civil Engineering by Sandeep Jyani 52

 Questions: Strength of Materials
Q.24 What will be the relation
between E (Young’s modulus of
Elasticity) and K (Bulk Modulus),
when Poisson’s ratio is 0.25?
E= 𝟑𝑲 𝟏 − 𝟐𝝁
a) E =K
E= 𝟑𝑲 𝟏 − 𝟐 × 𝟎. 𝟐𝟓
b) E = 2K
c) E = 1.5K E= 𝟑𝑲 𝟎. 𝟓
d) E = K = 0 E= 𝟏. 𝟓𝑲

Civil Engineering by Sandeep Jyani 53

24. The working stress of a
material is expected to be:
a) Equal to ultimate stress.
b) Equal to yield stress.
c) Less than yield stress.
d) More than yield stress.
24. The working stress of a
material is expected to be:
a) Equal to ultimate stress.
b) Equal to yield stress.
c) Less than yield stress.
d) More than yield stress.
24. The working stress of a material is expected to be:

a) Equal to ultimate stress.

b) Equal to yield stress.

c) Less than yield stress.

d) More than yield stress.

 True Stress & Nominal Stress
1. Nominal stress – Strain OR
Conventional Stress – Strain diagrams:
Stresses are usually computed on the basis of the
original area of the specimen; such stresses are often
referred to as conventional or nominal stresses.
2. True stress – Strain Diagram:
Since when a material is subjected to a uniaxial load,
some contraction or expansion always takes place.
Thus, dividing the applied force by the
corresponding actual area of the specimen at the
same instant gives the so called true stress.

Civil Engineering by Sandeep Jyani

 Stress – Strain Curve for Mild Steel
Lower Yield Point
Upper Yield Point
Necking Region
Elastic Limit. Yield Plateau
𝝈ult E
C
B F
A 𝝈f
C’ D
𝝈 Proportional Limit.
Strain Hardening

Stress

Elastic Plastic Region

Region
O Strain 𝜺
Civil Engineering by Sandeep Jyani
 Stress – Strain Curve for Mild Steel
Lower Yield Point

• OA is Proportionality limit Upper Yield Point

• OB is Elastic limit but OB is Yield Plateau

Elastic Limit.
Non linear 𝝈ult E
• The slippage of the carbon C
atom within a molecular fe B F
mass leads to drop down of fy A 𝝈f
stress marginally from C to C’ C’ D
• C is upper yield point 𝝈 Proportional Limit.
Necking Region
• C’ is lower yield point (also Stress
known as Yield Stress fy)
• For exp Fe-250 =>
fy=250N/mm2
• C’D is constant stress region
called Yield Plateau
O Strain 𝜺
Civil Engineering by Sandeep Jyani
 Stress – Strain Curve for Mild Steel
Lower Yield Point
• DE is Strain Hardening region,
material starts offering Upper Yield Point
resistance against deformation Necking Region
• EF is Necking region where Elastic Limit. Yield Plateau
drop down of stresses occur 𝝈ult E
upto Failure point C
B F
• Necking region exists only in
ductile material A 𝝈 f
• In mild steel, ABC are closer to C’ D
each other, therefore it is 𝝈 Proportional Limit.
Strain Hardening
known as Linear Elastic Metal,
and Yield stress and elastic Stress
stress is taken as 250N/mm2
• The Fracture or Failure in mild
steel depends upon
Percentage of carbon present
in a steel O Strain 𝜺
Civil Engineering by Sandeep Jyani
25. Proof resilience is the maximum
energy stored at:
a) Limit of proportionality
b) Elastic limit
c) Plastic limit
d) None of these
25. Proof resilience is the maximum
energy stored at:
a) Limit of proportionality
b) Elastic limit
c) Plastic limit
d) None of these
26. the modulus of elasticity of steel is :
a) 2 × 𝟏𝟎𝟒 MPa
b) 1.2 × 𝟏𝟎𝟓 MPa
c) 2 × 𝟏𝟎𝟓 MPa
d) 2 × 10 MPa
26. the modulus of elasticity of steel is :
a) 2 × 𝟏𝟎𝟒 MPa
b) 1.2 × 𝟏𝟎𝟓 MPa
c) 2 × 𝟏𝟎𝟓 MPa
d) 2 × 10 MPa
 27. Relation between young’s modulus (E) and modulus of rigidity (N)
is given as :
a) E = 3N(1 + μ)
b) E = 2N(1 – μ)
c) E = 2N(1 + μ)
d) E = 3N(1 – 2μ)
 27. Relation between young’s modulus (E) and modulus of rigidity (N)
is given as :
a) E = 3N(1 + μ)
b) E = 2N(1 – μ)
c) E = 2N(1 + μ)
d) E = 3N(1 – 2μ)
Que 28. Strain energy stored in a solid is given as:
a) σ × ϵ × colume
b) σ × ϵ × area of cross section
c) 0.5 × σ × ϵ × 1
d) 0.5 × σ × ϵ × volume
Que 28. Strain energy stored in a solid is given as:
a) σ × ϵ × colume
b) σ × ϵ × area of cross section
c) 0.5 × σ × ϵ × 1
d) 0.5 × σ × ϵ × volume
Que 29. Identify the erroneous statement, mild steel :
a) Has two yield points.
b) is a ductile material.
c) has small percent elongation at failure.
d) Shows strain hardening.
Que 29. Identify the erroneous statement, mild steel :
a) Has two yield points.
b) is a ductile material.
c) has small percent elongation at failure.
d) Shows strain hardening.
30. The modulus of elasticity of steel is more than of concrete. It
indicates that steel is:
a) Less elastic
b) More elastic
c) More plastic
d) less plastic
30. The modulus of elasticity of steel is more than of concrete. It
indicates that steel is:
a) Less elastic
b) More elastic
c) More plastic
d) less plastic
31. The ability of a material to absorb strain energy till the elastic limit
is known as:
a) Resilience
b) Ductility
c) Elasticity
d) Malleability
31. The ability of a material to absorb strain energy till the elastic limit
is known as:
a) Resilience
b) Ductility
c) Elasticity
d) Malleability
32. Out of the following, which is least elastic?
a) Silver
b) Rubber
c) Iron
d) Copper
32. Out of the following, which is least elastic?
a) Silver
b) Rubber
c) Iron
d) Copper
33. A bar, L meter long and having its area of cross-section A, is
subjected to gradually applied tensile load W. The strain energy stored
in the bar is given by:
W²L
a)
AE
W²L
b)
2AE
WL
c)
2AE
WL
d)
AE
33. A bar, L meter long and having its area of cross-section A, is
subjected to gradually applied tensile load W. The strain energy stored
in the bar is given by:
W²L
a)
AE
𝐖²𝑳
b)
𝟐𝑨𝑬
WL
c)
2AE
WL
d)
AE
Que 34. For a beam carrying a uniformly distributed load, the strain
energy will be maximum in case the beam is:
a) Propped centilever
b) Fixed at both ends
c) Cantilever
d) Simply supported
Que 34. For a beam carrying a uniformly distributed load, the strain
energy will be maximum in case the beam is:
a) Propped centilever
b) Fixed at both ends
c) Cantilever
d) Simply supported
35. The ability of a material to absorb energy till the breaking or
rupture takes place is known as:
a) hardness
b) Toughness
c) Brittleness
d) Softness
35. The ability of a material to absorb energy till the breaking or
rupture takes place is known as:
a) hardness
b) Toughness
c) Brittleness
d) Softness
36. Poisson’s ratio μ is defined as the ratio of:
a) Axial strain to transverse strain
b) Axial strain to shear strain
c) Transverse strain to axial strain
d) Shear strain to axial strain
36. Poisson’s ratio μ is defined as the ratio of:
a) Axial strain to transverse strain
b) Axial strain to shear strain
c) Transverse strain to axial strain
d) Shear strain to axial strain
37. Which of the following is a dimensionless quantity?
a) Shear force
b) Stress
c) Strain
d) Modulus of elasticity
37. Which of the following is a dimensionless quantity?
a) Shear force
b) Stress
c) Strain
d) Modulus of elasticity
Que 38. The property of a material by which it gets permanent
deformation under a load which is not recovered after removal of load
is called:
a) Elsaticity
b) Brittleness
c) Ductility
d) Plasticity
Que 38. The property of a material by which it gets permanent
deformation under a load which is not recovered after removal of load
is called:
a) Elsaticity
b) Brittleness
c) Ductility
d) Plasticity
39. The property of a material by which it can be beaten or rolled into
plates, is called:
a) Malleability
b) Ductility
c) Plasticity
d) Elasticity
39. The property of a material by which it can be beaten or rolled into
plates, is called:
a) Malleability
b) Ductility
c) Plasticity
d) Elasticity
40. “Poisson’s ratio” is defined as the ratio of:
a) Lateral strain to linear strain
b) Lateral Stress to longitudinal Stress
c) Lateral stress to linear stress
d) Linear stress to lateral stress
40. “Poisson’s ratio” is defined as the ratio of:
a) Lateral strain to linear strain
b) Lateral Stress to longitudinal Stress
c) Lateral stress to linear stress
d) Linear stress to lateral stress
Que 41. Strain energy due to sudden axial load is given by : (σ :
Resultant stress, P : Axial load, Δ : Deformation, ∈∶Strain, E :Modulus of
elasticity)
1
a) P Δ
2
b) σ .ϵ
c) P Δ
σ²
d)
2E
Que 41. Strain energy due to sudden axial load is given by : (σ :
Resultant stress, P : Axial load, Δ : Deformation, ∈∶Strain, E :Modulus of
elasticity)
1
a) P Δ
2
b) σ .ϵ
c) P Δ
σ²
d)
2E
42. Total number of elastic constant of an isotropic material are
a) 2
b) 3
c) 4
d) 5
42. Total number of elastic constant of an isotropic material are
a) 2
b) 3
c) 4
d) 5