SOM_MCQ UNIT_1-2

file:///C|/DOCUME~1/Student/LOCALS~1/Temp/SOM_UNIT_1-2.txt

-------------------------------------------------------------------------------------------------------------- Q The internal resistance force developed in a body per unit area is known as__________

A stress

B strain

C elasticity D none Ans -A--------------------------------------------------------------------------------------------------------------- Q The S I unit of stress is _______

A GPa

B MPa

C KPa D Pa Ans -D- -------------------------------------------------------------------------------------------------------------- Q 1 MPa= _______

A 1N/m2 B 1N/mm2

C 1KN/mm2 D 1 KN/m2 Ans -B- -------------------------------------------------------------------------------------------------------------- Q 1 GPa= _______

A 1N/m2 B 1N/mm2

C 1KN/mm2 D 1 KN/m2 Ans -C- -------------------------------------------------------------------------------------------------------------- Q 1 Pa= _______

file:///C|/DOCUME~1/Student/LOCALS~1/Temp/SOM_UNIT_1-2.txt (1 of 49)1/15/2015 9:30:14 AM


A 1N/m2 B 1N/mm2

C 1KN/mm2 D 1 KN/m2 Ans -A- -------------------------------------------------------------------------------------------------------------- Q The change in length per unit original length is known as ____________ A stress B strain

C elasticity D none

Ans -B - -------------------------------------------------------------------------------------------------------------------- Q The S I unit for strain is __________ A Pa

B MPa

C GPa

D none Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The property of material to get Ruptured without significant deformation on applying external load is known as ______ A elasticity

B Plasticity

C ductility

D Brittleness Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The property of material to get to get drawn in to thin wires without breaking is known as _____ A elasticity

B Plasticity



C ductility

D BrittlenesS Ans -C - -------------------------------------------------------------------------------------------------------------------- Q The property of a material to resist deformation is known as _________

A elasticity

B Plasticity

C stiffness

D BrittleneSs Ans -C - -------------------------------------------------------------------------------------------------------------------- Q The property of a material to absorb shock energy without failure is known as _________ A elasticity

B Plasticity

C stiffness

D resilience Ans -D - -------------------------------------------------------------------------------------------------------------------- Q the permanent deformation of a material with time when subjected to a constant as ______ A creep

B plasticity

C fatigue

D resilience Ans -A - -------------------------------------------------------------------------------------------------------------------- Q Failure of a material due to repeated cycles of loading and unloading is known as __________ A creep

B plasticity

C fatigue

D resilience



Ans -C - -------------------------------------------------------------------------------------------------------------------- Q The property of a material to remain in its deformed state even after removing external loads is known as__________ A creep

B plasticity

C fatigue

D resilience

Ans -B - -------------------------------------------------------------------------------------------------------------------- Q A wire of ductile material is able to regain its original length till ______ A proportional limit

B elastic limit

C Y S is reached

D Ultimate stress is reached Ans -B - -------------------------------------------------------------------------------------------------------------------- Q A wire of ductile material is able to regain its original length after ______ A proportional limit

B elastic limit

C Y S is reached

D Ultimate stress is reached Ans -B - -------------------------------------------------------------------------------------------------------------------- Q Hookes law is valid within _______ A elastic

B plastic C Yeiding

D linear Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The stress-strain graph is nearly horizontal in _____ region



A elastic

B plastic C Yeiding

D linear Ans -C - -------------------------------------------------------------------------------------------------------------------- Q There is increase in strain without any increase in stress in _____ A elastic

B plastic C Yeiding

D linear

Ans -C - -------------------------------------------------------------------------------------------------------------------- Q Fracture occurs at _____ A rupture pt

B yeild pt C elastic limit

D ultimate stress Ans -A - -------------------------------------------------------------------------------------------------------------------- Q The ratio of yield stress to working sterss is known as ____ A margin of safety

B factor of safety

C mod of elasticity

D none Ans -B - -------------------------------------------------------------------------------------------------------------------- Q The maximum stress reached in a ductile material is known as ______ A ultimate stress

B factor of safety



C mod of elasticity

D none Ans - A- -------------------------------------------------------------------------------------------------------------------- Q The ratio of ultimate load to working load is _____ A margin of safety

B factor of safety

C mod of elasticity

D none Ans -B - -------------------------------------------------------------------------------------------------------------------- Q The ratio of normal stress to normal strain is ____ A modulus of elasticity

B mod of rigidity

C bulk modulus

D Poissons ratio Ans -A - -------------------------------------------------------------------------------------------------------------------- Q The ratio of shear stress to shear strain is ____

A modulus of elasticity

B mod of rigidity

C bulk modulus

D Poissons ratio Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The maximum value of poissons ratio is _______ A 1

B 0.5

C 0.25



D 0.75 Ans -C - -------------------------------------------------------------------------------------------------------------------- Q The expression for change in length of a uniform cross section wire subjected to axial load is _____ A PL/AE

B SL/E .......... S=sigma

C eE D All Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The expression for stress is _____ A P/A

B dL/L

C P/AE

D all Ans -D - -------------------------------------------------------------------------------------------------------------------- Q The expression for strain is _____ A S/E

B dL/L

C P/AE D All Ans -D - -------------------------------------------------------------------------------------------------------------------- Q modulus of elasticity can be calculated within _______ region A elastic

B plastic

C yielding

D linear Ans -D - --------------------------------------------------------------------------------------------------------------------



Q The force requierd to produce unit deflection is known as ______ A stiffness

B Plasticity

C flexibility

D resilence Ans -C - -------------------------------------------------------------------------------------------------------------------- Q The elongation produced by unit load in the rod is known as ______ A stiffness

B Plasticity

C flexibility

D resilence Ans -C- -------------------------------------------------------------------------------------------------------------------- Q If an axial force of 1KN is applied to a rod of 100 mm2 cross section area produces change

in length of 1 mm over a length of 12 m;the modulus of elasticity of the material will be ___ A 120 MPa

B 10 Gpa

C 12 Gpa

D 120 Gpa Ans -D - -------------------------------------------------------------------------------------------------------------------- Q If an axial force of 1KN is applied to a rod of 100 mm2 cross section area ;length 5 m & the modulus of elasticity

of the material is 100 GPa ;the change in length of the rod will be _____ A 1 mm

B 1 m

C 0.5 mm

D 0.25 mm Ans -C- --------------------------------------------------------------------------------------------------------------------



Q If an axial force of 1KN is applied to a rod of 25 diameter;length 300 mm; the modulus of elasticity

of the material is 200 GPa ;the change in length of the rod is 0.045 mm... The srain in the rod will be ________ A 1.5

B 0.75

C 0.5

D 0.25 Ans -C- -------------------------------------------------------------------------------------------------------------------- Q The expression for stiffness is A AE/L

B L/AE C PL/AE

D SL/E ........s= sigma Ans - B- -------------------------------------------------------------------------------------------------------------------- Q The expression for flexibility is

A AE/L

B L/AE C PL/AE

D SL/E ........s= sigma Ans -B- -------------------------------------------------------------------------------------------------------------------- Q Change in length of a rod due to change in tempreture depends on ________ A original length

B change in tempreture

C modulus of elasticity

D co-effient of thermal expansion Ans -D-



-------------------------------------------------------------------------------------------------------------------- Q Change in length of a rod due to change in tempreture does not depend on ________ A original length



D co-effient of thermal expansion Ans -C- -------------------------------------------------------------------------------------------------------------------- Q Change in length of a rod due to change in tempreture does not depend on ________ A ambient temperature



D co-effient of thermal expansion

Ans -A- -------------------------------------------------------------------------------------------------------------------- Q Thermal sterss is developed in a rod subjected to a change in temperature when _______ A allowed to expand freely

B not allowede to expand freely

C A & B

D none Ans -B- -------------------------------------------------------------------------------------------------------------------- Q Which of the following beams will develop thermal stress when subjected to a change in temperature? A Cantilever beam

B Beam with hinges at both ends

C simply supported beam

D none Ans -B- --------------------------------------------------------------------------------------------------------------------



Q Which of the following beams will develop thermal stress when subjected to a change in temperature? A Cantilever beam

B Beam with roller at one end & hinge at other.


D none

Ans -D---------------------------------------------------------------------------------------------------------------------- Q Which of the following beams will develop thermal stress when subjected to a change in temperature?

A fixed beam

B Beam with roller at one end & hinge at other.


D none

Ans -A---------------------------------------------------------------------------------------------------------------------- Q Which of the following beams will develop thermal stress when subjected to a change in temperature?

A Cantilever beam

B Beam with one end fixed & hinged at other.


D none

Ans -B---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.

the co-efficent of thermal expansion for copper is greater than that for steel.

If temperature is increased ,_______

A Cu has tensile stress

B steel has tensile stress

C both have tensile stress

D none

Ans -B----------------------------------------------------------------------------------------------------------------------



Q A steel strip is weilded to a copper strip of the same dimensions along the length.


If temperature is increased ,_______

A Cu has compressive stress

B steel has compressive stress

C both have compressive stress

D none

Ans -A---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.


If temperature is decreased ,______




D none

Ans -A---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.


If temperature is decreased ,_______




D none

Ans -B---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.

The composite strip is placed between 2 rigid supports so that the ends touch the supports.



The co-efficints of thermal expansion for Cu is greater than that of steel.

If temperature is increased ,_______.




D none

Ans -D---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.



If temperature is increased ,_______.




D none

Ans -C---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.



If temperature is decreased ,_______.




D none

Ans -D---------------------------------------------------------------------------------------------------------------------- Q A steel strip is weilded to a copper strip of the same dimensions along the length.





If temperature is decreased ,_______.




D none

Ans -C---------------------------------------------------------------------------------------------------------------------- Q If a force of maginitude P acts on the surface of a area A ,the shear stress is ______

A P/A

B P cos@/A

C P sin@/A

D none

Ans -B---------------------------------------------------------------------------------------------------------------------- Q If a force of maginitude P acts on the surface of a body at angle @ with the surface of area A,

the normal stress is ____

A P/A

B P cos@/A

C P sin@/A

D none

Ans -C---------------------------------------------------------------------------------------------------------------------- Q If F is is the shear force acting on a rivet in a state of angle shear & the rivet has an area of cross section A,

the shaer stress acting on the rivet is _____

A F/A

B 2F/A



C F/2A D none Ans -A------------------------------------------------------------------------------------------------------------------------ Q If F is is the shear force acting on a rivet in a state of double shear & the rivet has an area of cross section A,

the shaer stress acting on the rivet is _____

A F/A

B 2F/A

C F/2A D none Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q While punching a hole in a metal sheet using a punch,_____ stress is developed in a punch.

A normal compressive

B normal tensile C shear D lateral Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q While punching a hole in a metal sheet using a punch,_____ stress is developed in a metal sheet.

A normal compressive

B normal tensile C shear D lateral Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A steel rod of length L has a circular cross section of dia meter d.If dl is the change in its length

when subjected to an axial tensile force,the lateral strain will be _____

Assume poissons ratio is V

A dl/L



B -Vdl/L

C dd/D D -dd/D Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A steel rod of length L has a circular cross section of dia meter d.If dl is the change in its length

when subjected to an axial tensile force,the longitudinal strain will be _____


A dl/L

B -Vdl/L

C dd/D D -dd/D Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A steel rod of length L has a circular cross section of dia meter d.If dl is the change in its length

when subjected to an axial tensile force,the volumetric strain will be _____


A dl(1-2V)/L

B -dl(1-2V)/L

C dd(1-2V)/D D -dd(1-2V)/D Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q The relation between modulus of elasticity E,bulk modulus K & poissons ratio V is _________

A E=3K(1+2V)

B E=3K(1-2V)

C E=2K(1+3V) D E=2K(1-3V)



Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q The relation between modulus of elasticity E,modulus of rigidity G & poissons ratio V is _________

A E=3G(1+2V)

B E=3G(1-2V)

C E=2G(1+V) D E=2G(1-V) Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q The relation between modulus of elasticity E,modulus of rigidity G & bulk modulus K is _________

A 9KG/(3G+K)

B 9KG/(3G-K)

C 9GK/(G-3K) D 9GK/(G+3K) Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q The longitudinal stress develoed in a rod of cross setion area 50 mm2 is 100 MPa. The force acting along its axis is ___________

A 2 N B 2 KN

C 5 N D 5 KN Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q If the working load is one third of the ultimate load,the factor of safety is ____

A 3

B 0.33

C 1 D 30



Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q If the working load is one third of the ultimate load,the margin of safety is ____

A 3

B 0.33

C 1 D 2 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Working loads on structures must be _____ultimate load.

A equal to

B greater than C less than D none Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q The value of factor of safety is always ___.

A >1

B <1

C =1 D no such value Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q The value of margin of safety is always ___.. A >1

B <1

C =1 D >0 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Modulus of elasticity depends on _____



A length

B change in length

C stress D none Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Modulus of rigidity depends on _____

A shear stress

B shear strain

C both A & B D none Ans -D-

----------------------------------------------------------------------------------------------------------------------- Q Bulk modulus depends on ________.

A volumetric strain

B volumetirc stress

C both A & B D none

Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Poissons ratio depends on ______.

A longitudinal stess

B lateral strian

C both A & B D none Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Two rods have uniform cross section areas in the ratio 1:2 &

are subjected to axial tensile forces of the same magnitude.

The stresses induced in the rod will be in the ratio of_______.



A 1:2

B 2:1 C 1:4 D 4:1 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q Two rods have uniform circular cross section areas with diameters in the ratio of 1:2 &

are subjected to axial tensile forces of the same magnitude.


A 1:2

B 2:1 C 1:4 D 4:1 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Two rods have uniform cross section areas in the ratio 1:2 &

are subjected to axial tensile forces of magnitude in the ratio of 1:2.


A 1:2

B 2:1 C 1:1 D 4:1 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q Two rods have uniform cross section areas in the ratio 1:2 &

are subjected to axial tensile forces of magnitude in the ratio of 2:1.


A 1:2

B 2:1



C 1:1 D 4:1 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q The change in length of a rod of uniform cross section was found to be 2mm for some applied force.

The change in length of a rod of the same material & length but of twice the cross setion

area subjected to the same force will be _________mm.

A 1

B 2

C 0.5 D 4 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q The change in length of a rod of uniform cross section was found to be 2mm for some applied force.

The change in length of a rod of the same material & length but of HALF the cross setion

area subjected to the same force will be _________mm.

A 1

B 2

C 0.5 D 4 Ans -D------------------------------------------------------------------------------------------------------------------------ Q The change in length of a rod of uniform cross section was found to be 2mm for some applied force.

The change in length of a rod of the same material & length but of twice the diameter

subjected to the same force will be _________mm.

A 1

B 2

C 0.5 D 4



Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q The change in length of a rod of uniform cross section was found to be 2mm for some applied force.

The change in length of a rod of the same material & length but of half the diameter

subjected to the same force will be _________mm.

A 1

B 2

C 0.5 D 4 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Poissons ratio for rubber is _____ than that of steel.

A larger

B smaller

C equal D cannot be said Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q Modulus of elasticity for rubber is _____ than that of steel.

A larger

B smaller

C equal D cannot be said Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q Two rods A & B of diffrent materials have the same length,area of cross section &

are subjected to the same axial force.If Ea = 2Eb, Then,__________ A dLa = 2 dLb ............... where d=delta

B dLa = .5 dLb

C dLa = dLb



D dLa = 4 dLb

Ans -B-

----------------------------------------------------------------------------------------------------------------------- Q Two rods A & B of diffrent materials have the same length,area of cross section &

are subjected to the same axial force.If Ea > Eb, Then,__________ A dLa > dLb

B dLa < dLb

C dLa = dLb

D none of above

Ans -B-


are subjected to the same axial force.If Ea = 2Eb & Da =2Db, Then,__________ A dLa = 0.125 dLb

B dLa = .5 dLb

C dLa = dLb

D none of above

Ans -A-


are subjected to the same axial force.If Ea = 2Eb & Db =2Da, Then,__________ A dLa = 0.125 dLb

B dLa = .5 dLb

C dLa = 2dLb

D none of above

Ans -C-

----------------------------------------------------------------------------------------------------------------------- Q If V is the volume of a rectangular bar subjected to a three dimensional stress state &



the Poissons ratio for the material is 0.5, the change in volume of the bar will be _____.

A V

B 2V

C 0.5V D 0 Ans -D- -----------------------------------------------------------------------------------------------------------------------

Q For a certain material,E = 3K.The value of Poissons ratio for the material will be______.

A 0

B 0.25

C 0.5 D 0.75 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q For a certain material,E = 1.5K.The value of Poissons ratio for the material will be______.

A 0

B 0.25

C 0.5 D 0.75 Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q For a certain material,the poissons ratio is 0.The relation between modulus of elasticity E &

the bulk modulus K is E=________

A 0

B 3K

C 1.5K D 1.2K Ans -B-



-----------------------------------------------------------------------------------------------------------------------

Q For a certain material,the poissons ratio is 0.5.The relation between modulus of elasticity E &


A 0

B 3K

C 1.5K D 1.2K Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q For a certain material,the poissons ratio is 0.3.The relation between modulus of elasticity E &


A 0

B 3K

C 1.5K D 1.2K Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q For a certain material,the poissons ratio is 0.The relation between modulus of elasticity E &

the modulus of rigidity G is E=________

A 0

B 2G

C 3G D 2.5G Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q For a certain material,the poissons ratio is 0.5.The relation between modulus of elasticity E &


A 0

B 2G



C 3G D 2.5G Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q For a certain material,the poissons ratio is 0.25.The relation between modulus of elasticity E &


A 0

B 2G

C 3G D 2.5G Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q For any material,the maximum value of E in terms of G is E=______

A G

B 2G

C 3G D 2.5G Ans -C-

----------------------------------------------------------------------------------------------------------------------- Q For any material,the minimum value of E in terms of G is E=______

A G

B 2G

C 3G D 2.5G Ans -B-

----------------------------------------------------------------------------------------------------------------------- Q For any material,the minimum value of G in terms of E is G=______

A E



B 2E

C E/3 D E/2 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q For any material,the maximum value of G in terms of E is G=______

A E B 2E

C E/3 D E/2 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q For any material,the maximum value of E in terms of K is E=______

A 0

B 2K

C 3K D 2.5K Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q For any material,the minimum value of E in terms of K is E=______

A 0

B 2K

C 3K D 2.5K Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q For any material,the minimum value of K in terms of E is K=_____

A E B 2E



C E/3 D E/2 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q If E=3K, then G=______

A 0

B 1.5K

C K D (6/7)K Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q If E=2K, then G=______

A 0

B 1.5K

C K D (6/7)K Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q If 4E=9K, then G=______

A 0

B 1.5K

C K D (6/7)K Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q If 2G=3K, then E=_____

A 0

B 3K

C K D 2K



Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q If 7G=6K, then E=_____

A 0

B 3K

C K D 2K Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T),Sy=50MPa(C) & Sz=50 MPa(T).If the modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25,

the change in the volume of cube is _____mm3. .............. (here S=sigma)

A 0

B 0.125

C 0.25 D 0.375 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=100MPa(T),Sy=100MPa(C) & Sz=100 MPa(T).If the modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25,

the change in the volume of cube is _____mm3.

A 0

B 0.125

C 0.25 D 0.375 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T),Sy=50MPa(C) & Sz=0.If the modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25,




A 0

B 0.125

C 0.25 D 0.375 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T),Sy=50MPa(T) & Sz=50 MPa(T).If the modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25,


A 0

B 0.125

C 0.25 D 0.375 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T),Sy=50MPa(T) & Sz=100 MPa(C).If the modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25,


A 0

B 0.125

C 0.25 D 0.375 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T) Sz=0.The modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25.

If the change in volume of the cube is requierd to be zero,the force to be applied along Y-direction is ______

A 0

B 5kN(T)



C 5kN(C) D 0.5kN(T) Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(C) Sz=0.The modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25.


A 0

B 5kN(T)

C 5kN(C) D 0.5kN(T) Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(C) Sz=100 MPa(T).The modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25.


A 0

B 5kN(T)

C 5kN(C) D 0.5kN(T) Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A steel cube of dimensions 10 mmx 10 mmx 10 mm is subjected to stresses

Sx=50MPa(T) Sz=100 MPa(C).The modulus of elasticity of steel is 200GPa & Poissons ratio is 0.25.


A 0

B 5kN(T)

C 5kN(C) D 0.5kN(T)



Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q If v=0,then G=____

A 0

B 3K

C (3/2)K D 2K Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q If v=0.5,then G=____

A 0

B 3K

C (3/2)K D 2K Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q If v=0.1,then G=____

A 0

B (12/11)K

C (13/12)K D 2K Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q If v=0.2,then G=____

A 0

B (12/11)K

C K D (3/4)K Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q If v=0.25,then G=____



A 0

B (12/11)K

C (3/5)K D (3/4)K Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A strain of 4 x 10^-3 was observed for a wire of length 200mm.

The change in length of the wire will be ____mm.

A 50

B 5

C 0.5 D 0.8 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q A strain of 4 x 10^-3 was observed for a wire of length 200mm & diameter 20 mm.If the poissons ratio is 0.25,

the change in diameter will be _____mm.

A 0.02

B 0.05

C 0.5 D 0.8 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A strain of 4 x 10^-4 in a particular specimen was observed to be accompanied by a stress of 80 MPa.

The modulus of elasticity of the material is _______.

A 80 GPa

B 200 GPa

C 133.33 GPa D 200 MPa Ans -B- -----------------------------------------------------------------------------------------------------------------------



Q A strain of 4 x 10^-4 in a particular specimen was observed to be accompanied by a stress of 80 MPa.

The bulk modulus of the material is _______.

A 80 GPa

B 200 GPa

C 133.33 GPa D 200 MPa Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A strain of 4 x 10^-4 in a particular specimen was observed to be accompanied by a stress of 80 MPa.

The modulus of rigidity of the material is _______.

A 80 GPa

B 200 GPa

C 133.33 GPa D 200 MPa Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A stepped bar of steel consists of a portion with cross setion area 500mm2 connected to a portion

with cross section area 750mm2.The maximum axial tensile force that can be applied to the bar at the ends without

exceeding a stress of 100MPa is _____kN.

A 50

B 75

C 100 D 150 Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q A stepped bar of steel consists of a portion with cross setion area 500mm2 connected to a portion

with cross section area 1000 mm2.Each portion has a length of 1m.The maximum elongation of the bar

by applying an axial tensile force at the ends without exceeding a stress of 100MPa is _____mm.

A 0.5



B 0.75

C 0.1 D 0.15 Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A strip of steel (E=200GPa,v=0.25) has a length of 1m,width 200mm & thickness of 10 mm.

A line of length 1 m is drawn parallel to its length on one of its side surfaces.

When the strip is subjected to an axial tensile force of 100kN, the length of the line will be _____mm.

A 1000

B 1000.25

C 999.75 D 0.25 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A strip of steel (E=200GPa,v=0.25) has a length of 1m,width 200mm & thickness of 10 mm.

A line of length 1 m is drawn parallel to its length on one of its side surfaces.

When the strip is subjected to an axial compressive force of 100kN, the length of the line will be _____mm.

A 1000

B 1000.25

C 999.75 D 0.25 Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q A strip of steel (E=200GPa,v=0.25) has a length of 1m,width 200mm & thickness of 10 mm.

A line of length 200 mm is drawn parallel to its length on one of its side surfaces.

When the strip is subjected to an axial tensile force of 100kN, the length of the line will be _____mm.

A 199.99375

B 200.00625



C 200.25 D 199.75 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q A strip of steel (E=200GPa,v=0.25) has a length of 1m,width 200mm & thickness of 10 mm.

A line of length 200 mm is drawn parallel to its length on one of its side surfaces.

When the strip is subjected to an axial compressive force of 100kN, the length of the line will be _____mm.

A 199.99375

B 200.00625

C 200.25 D 199.75 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to a tensile

stress S acting along its length,the circle will_____

A remain circle of same radius

B become ellipse with major axis along its width

C become ellipse with major axis along its length D become circle of larger radius Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to a tensile

stress S acting along its width,the circle will_____



C become ellipse with major axis along its length D become circle of larger radius Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to two mutually



perpendicular & equal tensile stresses S acting along its length & width,the circle will_______



C become ellipse with major axis along its length D become circle of larger radius

Ans -D- -----------------------------------------------------------------------------------------------------------------------

Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to a

compressive stress S acting along its length,the circle will______.



C become ellipse with major axis along its length D become circle of larger radius

Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to a

compressive stress S acting along its width,the circle will______.



C become ellipse with major axis along its length D become circle of smaller radius

Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q A metal plate of length L & width b has a circle drawn on it.If it is subjected to two mutually

perpendicular & equal compressive stresses S acting along its length & width, the circle will ________.





C become ellipse with major axis along its length D become circle of smaller radius

Ans -D- -----------------------------------------------------------------------------------------------------------------------

Q A steel rail (a = 12 X 10^-6 /`C) has a length of 10 m at a temperature of 25 `C.

The tempreature at which the length of rail decreases by 1.2 mm is __________ `C.

A 10

B 15

C 25 D 35 Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A steel rail (a = 12 X 10^-6 /`C) has a length of 10 m at a temperature of 25 `C.

The tempreature at which the length of rail increases by 1.2 mm is __________ `C.

A 10

B 15

C 25 D 35 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Three steel rods A,B & C have areas of cross sections Aa >Ab > Ac.All the rods have the

same length & are subjected to the same change in temperature.The change in length will be maximum for ________.

A B

B A

C none D C Ans -C- -----------------------------------------------------------------------------------------------------------------------



Q Three steel rods A,B & C have areas of cross sections Aa >Ab > Ac.All the rods have the

same length,are contrained by rigid supports at both ends & are subjected to

the same change in temperature. The stress will be maximum for ________.

A A

B B

C C D none Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q Three steel rods A,B & C have areas of cross sections Aa >Ab > Ac.All the rods have the

same length,are contrained by rigid supports at both ends & are subjected to

the same change in temperature. The force exerted on the supports will be maximum for ________.

A A

B B

C C D none Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q Three steel rods A,B & C have areas of cross sections La >Lb > Lc.All the rods have the

same areas of cross section & are subjected to the same change in temperature.The change

in length will be maximum for _______.

A A

B B

C C D none Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q Three steel rods A,B & C have areas of cross sections La >Lb > Lc.All the rods have the



same areas of cross section,are constrained by rigid supports at both ends &

are subjected to the same change in temperature.The stress will be maximum for_______.

A A

B B

C C D none Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q The steel rod (a =12 X 10^-6 /`C & E=200GPa) of length 500 mm & area of cross section 200 mm2

is fixed at one end to a rigid support.It is initially at a temperature of 20`C.

If its temperature is increased by 50`C,the stress developed in its is _______MPa.

A 120

B 72

C 0 D 80 Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q The steel rod (a =12 X 10^-6 /`C & E=200GPa) of length 500 mm & area of cross section 200 mm2

is fixed at both ends to a rigid supports.It is initially at a temperature of 20`C.

If its temperature is increased by 50`C,the stress developed in its is _______MPa.

A 120

B 72

C 0 D 80 Ans -A- ----------------------------------------------------------------------------------------------------------------------- Q The steel rod (a =12 X 10^-6 /`C & E=200GPa) of length 500 mm & area of cross section 200 mm2

is fixed at one end to a rigid support & a support which yeilds by 0.1 mm at the other.It is initially at a temperature of 20`C.



If its temperature is increased by 50`C,the stress developed in its is ______ MPa.

A 120

B 72

C 0 D 80 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q The steel rod (a =12 X 10^-6 /`C & E=200GPa) of length 500 mm & area of cross section 200 mm2

is fixed at one end to a rigid support & a support which yeilds by 0.2 mm at the other.It is initially at a temperature of 20`C.

If its temperature is increased by 50`C,the stress developed in its is ______ MPa.

A 120

B 72

C 0 D 80 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A copper rod(a=17 X 10^-6 /`C & E=100GPa) is fixed at one end to a rigid support & there is a gap

of 1 mm between its other end & another rigid support at a temperature of 20`C.The rod will be stress

free till a temperature of ______`c.

A 58.82

B 78.82

C 100 D none Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A copper rod(a=17 X 10^-6 /`C & E=100GPa) is fixed at one end to a rigid support & there is a gap

of 1 mm between its other end & another rigid support at a temperature of 20`C.If its temperature is increased by 50`C, the stress developed in its is ______ MPa.



A -15

B 15

C 0 D none Ans -B- -----------------------------------------------------------------------------------------------------------------------



A 0

B 27.5

C 53 D 70 Ans -B- -----------------------------------------------------------------------------------------------------------------------



A 0

B 27.5

C 53 D 70 Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q A copper rod(a=17 X 10^-6 /`C & E=100GPa) is fixed at one end to a rigid support & there is a gap




A 0

B 27.5

C 53 D 70 Ans -D- ----------------------------------------------------------------------------------------------------------------------- Q A hole of diameter 25 mm is to be drilled in a metal sheet of thickness 4 mm & shearing strength 120 Mpa.

The force required to be applied to the punch is ______Kn.

A 58.9

B 235.62

C 37.7 D 4.8 Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q A hole of diameter 25 mm is to be drilled in a metal sheet of thickness 4 mm & shearing strength 120 Mpa. The compressive stress developed in the punch is _____MPa.

A 76.8

B 19.2

C 37.7 D 25 Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q A circular hole is to be drilled in a metal sheet of thickness 4 mm.The ultimate shearing strength

of metal is 120MPa & the safe compressive stress developed in the punch 80 MPa.

The maximum diameter of the hole that can be punched is _____mm.

A 24

B 10.7

C 32



D 12 Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q A rivet of diameter 20 mm is in a state of single & is subjected to a shear force of 20kN.

The shaer stress in the rivet is _____MPa.

A 31.83

B 63.66

C 15.92 D 20 Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A rivet of diameter 20 mm is in a state of double shear & is subjected to a shear force of 210kN.

The shear stress in the rivet is____MPa.

A 31.83

B 63.66

C 15.92 D 20 Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q A rivet of diameter 20 mm is in a state of single shear & has a ultimate shear stress of 200 MPa.

The shear force that will cause the rivet to fail in shear is _____MPa.

A 125.66

B 31.42

C 62.83 D 100 Ans -A- -----------------------------------------------------------------------------------------------------------------------



Q A steel rod is enclosed centrally in a hollow steel tube.The composite rod is subjected to an axial force P.

If Pr & Pt are the forces resisted by rod & tube respctively, & Ar & At are their cross section areas, then_______

A (Pr/Pt)=(Ar/At)

B (Pr/Pt)=(At/Ar)

C Pr -Pt= Ar-At D Pr + Pt = Ar + At Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q A steel tube (E = 200 GPa) has an internal diameter of 40 mm,thickness 10 mm & a length of 2 m.

If it is subjected to an axial pull of 80kN,the stress in the tube will be ______MPa.

A 0.283

B 50.13

C 0.85 D 0.113 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A steel tube (E = 200 GPa) has an internal diameter of 40 mm,thickness 10 mm & a length of 2 m.

If it is subjected to an axial pull of 80kN,the change in the length of the tube will be ______mm.

A 0.283

B 50.13

C 0.85 D 0.113 Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q A steel bar ABC (E =200 GPa) is 1 m long.For AB =0.7 m,it has cross section area of 500 mm2 &

for BC =0.3 m the cross section area is 400 mm2.The bar is subjected to an axial pull of 100 kN.

The stress is maximum in ________.

A AB

B BC



C same throught D none of above Ans -B- -----------------------------------------------------------------------------------------------------------------------

Q A steel bar ABC (E =200 GPa) is 1 m long.For AB =0.7 m,it has cross section area of 500 mm2 &

for BC =0.3 m the cross section area is 400 mm2.The bar is subjected to an axial pull of 100 kN.

The maximum sterss in the bar is _____MPa.

A 200

B 225 C 250 D 300 Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q A steel bar ABC (E =200 GPa) is 1 m long.For AB =0.7 m,it has cross section area of 500 mm2 &

for BC =0.3 m the cross section area is 400 mm2.If maximum stress in the bar is not to

exeed 200 MPa,the maximum axial force that can be applied is _______Mpa

A 100

B 120

C 150 D 80 Ans -D- -----------------------------------------------------------------------------------------------------------------------

Q The modulus of elasticity of a material is 210 GPa & its modulus of rigidity is 75 GPa.

The bulk modulus of the material is ______GPa.

A 210

B 75

C 350



D none Ans -C- -----------------------------------------------------------------------------------------------------------------------

Q The modulus of elasticity of a material is 210 GPa & its modulus of rigidity is 75 GPa.

The Poissons ratio of the material is _____.

A 0

B 0.2

C 0.3 D 0.4 Ans -D- -----------------------------------------------------------------------------------------------------------------------

Q The modulus of rigidity of a material is 75 GPa & its Poissons ratio is 0.4.

The modulus of elasticity of the material is ________GPa.

A 210

B 75

C 350 D none Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q The bulk modulus of a material is 350 GPa & its Poissons ratio is 0.4.

The modulus of elasticity of the material is _______GPa.

A 210

B 75

C 350 D none Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q The bulk modulus of a material is 350 GPa & its modulus of rigidity is 75 GPa.



The modulus of elasticity of the material is ______GPa.

A 210

B 75

C 350 D none Ans -A- -----------------------------------------------------------------------------------------------------------------------

Q The modulus of elasticity of a material is 210 GPa & its Poissons ratio is 0.4.

The bulk modulus of the material is _____GPa.

A 210

B 75

C 350 D none Ans -C- ----------------------------------------------------------------------------------------------------------------------- Q The modulus of elasticity of a material is 210 GPa & its Poissons ratio is 0.4.

The modulus of rigidity the material is _____GPa.

A 210

B 75

C 350 D none Ans -B- ----------------------------------------------------------------------------------------------------------------------- Q Stress does not depend upon_______.

A applied

B area of c/s

C modulus of elasticity D none of above



Ans -C- -----------------------------------------------------------------------------------------------------------------------


SOM_MCQ UNIT_1-2

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