Pressure is a scalar quantity because

It is the ratio of magnitude of force to area and both force and area are vectors

It is the ratio of magnitude of force to area

It is the ratio of component of force (normal to area) to area

A rod, of length L at room temperature and uniform area of cross section A, is made of a metal having coefficient of linear expansion α/°C. It is observed that an external compressive force F, is applied on each of its ends, prevents any change in the length of the rod, when its temperature rises by ΔTK. Young's modulus, Y, for this metal is:

$\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}$

$\frac{{\rm{F}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}$

$\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}$

$\frac{{\rm{F}}}{{2{\rm{A}}\alpha {\rm{\Delta T}}}}$

$\frac{{2{\rm{F}}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}$

Poisson ratio is defined as

Longitudinal strain divided by lateral strain

Lateral strain divided by longitudinal strain

Longitudinal strain divided by lateral strain

Longitudinal strain divided by shearing strain

Lateral strain times longitudinal strain

Choose the wrong statement regarding moduli of elasticity.

Greater the value of moduli of elasticity, more elastic is material

With rise in temperature, elasticity of material decreases.

For incompressible fluids the bulk modulus is infinite

Shear modulus of material increases with rise in temperature

A uniform cylindrical rod of length ‘L’ and radius ‘r’, is made from a material whose Young's modulus of elasticity equals ‘Y’. When this rod is heated by temperature ‘T’ and simultaneously subjected to a net longitudinal compressional force ‘F’, its length remains unchanged. The coefficient of volume expansion, of the material of the rod, is (nearly) equal to:

$\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

$\frac{{9{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

$\frac{{6{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

$\frac{{3{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

$\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

65 + Mcqs in Mechanical Properties in Engineering Materials Metallurgy Page 1 McqOptions

1.	The total number of scales used in Rockwell hardness test is?
A.	12
B.	14
C.	15
D.	16
Answer» D. 16

Discussion

2.	In which of the following test specimen is in the form of cantilever beam?
A.	Izod test
B.	Rockwell hardness test
C.	Charpy test
D.	Brinell test
Answer» B. Rockwell hardness test

Discussion

3.	Which of the following hardness test uses steel ball as indenter?
A.	Brinell hardness test
B.	Rockwell C hardness test
C.	Vickers hardness test
D.	Rockwell B hardness test
Answer» B. Rockwell C hardness test

Discussion

4.	Property by virtue of which material can absorb strain energy without plastic deformation is called ____________
A.	Creep
B.	Anisotropy
C.	Resilience
D.	Fatigue
Answer» D. Fatigue

Discussion

5.	Material having same identical values a property in all directions can be termed as ____________
A.	Creep
B.	Anisotropy
C.	Isotropy
D.	Orthotropic
Answer» D. Orthotropic

Discussion

6.	Permanent deformation of material with respect to time due to constant load and variable temperature is termed as ____________
A.	Elasticity
B.	Isotropy
C.	Hardness
D.	Creep
Answer» E.

Discussion

7.	Resistance developed by surface of any material is known as ____________
A.	Strength
B.	Hardness
C.	Stiffness
D.	Creep
Answer» C. Stiffness

Discussion

8.	The property of a material to resist any elastic deformation is termed as ____________
A.	Stiffness
B.	Hardness
C.	Malleability
D.	Strength
Answer» B. Hardness

Discussion

9.	Resistance of a material against any external force is termed as _______________
A.	Stiffness
B.	Malleability
C.	Strength
D.	Hardness
Answer» D. Hardness

Discussion

10.	Deformation that occurs due to stress over a period of time is known as ____________
A.	Wear resistance
B.	Fatigue
C.	Creep
D.	Fracture
Answer» D. Fracture

Discussion

11.	What type of wear occurs due to an interaction of surfaces due to adhesion of the metals?
A.	Adhesive wear
B.	Abrasive wear
C.	Fretting wear
D.	Erosive wear
Answer» B. Abrasive wear

Discussion

12.	The ability of a material to be formed by hammering or rolling is known as _________
A.	Malleability
B.	Ductility
C.	Harness
D.	Brittleness
Answer» B. Ductility

Discussion

13.	The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________
A.	Perfectly elastic
B.	Delayed elasticity
C.	Inelastic effect
D.	Plasticity
Answer» B. Delayed elasticity

Discussion

14.	If a 5 m long steel wire extends by 2.5 mm then the strain in it is ____________.
A.	0.0005
B.	0.005
C.	0.0002
D.	0.002
Answer» B. 0.005

Discussion

15.	A string is wound around a hollow cylinder of mass 5 kg and radius 0.5 m. If the string is now pulled with a horizontal force of 40 N and the cylinder is rolling without slipping on a horizontal surface (see figure), then the angular acceleration of the cylinder will be (Neglect the mass and thickness of the string)
A.	10 rad/s2
B.	16 rad/s2
C.	20 rad/s2
D.	12 rad/s2
Answer» C. 20 rad/s2

Discussion

16.	A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1π ms-2, what will be the tensile stress that would be developed in the wire?
A.	6.2 × 106 Nm-2
B.	5.2 × 106 Nm-2
C.	3.1 × 106 Nm-2
D.	4.8 × 106 Nm-2
Answer» D. 4.8 × 106 Nm-2

Discussion

17.	If speed (V), acceleration (a) and force (F) are considered as fundamental units, the dimension of Young's modulus will be
A.	[V-4 A-2 F]
B.	[V-2 A2 F2]
C.	[V-2 A2 F-2]
D.	[V-4 A2 F]
Answer» E.

Discussion

18.	A square tungsten slab of side 30 cm and thickness 5 cm is subject to a shearing force (on its narrow face) of 7.5 x 107 N. The lower edge is riveted to the floor. How much (in cm) will the upper edge be displaced? (Shear modulus (G) of tungsten is 150 x 109 N/m2)
A.	2
B.	4
C.	3
D.	1
Answer» E.

Discussion

19.	Pressure is a scalar quantity because
A.	It is the ratio of magnitude of force to area and both force and area are vectors
B.	It is the ratio of magnitude of force to area
C.	It is the ratio of component of force (normal to area) to area
D.	None of the above
Answer» D. None of the above

Discussion

20.	In a Young’s double slit experiment with slit separation 0.1 mm, one observes a bright fringe at angle $\frac{1}{{40}}$ rad by using light of wavelength (λ1). When the light of the wavelength λ2 is used as a bright fringe is seen at the same angle in the same set up. Given that λ1 and λ2 are in visible range (380 nm to 740 nm), their values are
A.	380 nm, 525 nm
B.	400 nm, 500 nm
C.	380 nm, 500 nm
D.	625 nm, 500 nm
Answer» E.

Discussion

21.	A metal ball of mass 0.1 kg is heated upto 500° C and dropped into a vessel of heat capacity 800 JK-1 and containing 0.5 kg water. The initial temperature of water and vessel is 30°C. What is the approximate percentage increment in the temperature of the water? [Take, specific heat capacities of water and metal are respectively 4200 Jkg-1 K-1 and 400 Jkg-1 K-1]
A.	25%
B.	15%
C.	30%
D.	20%
Answer» E.

Discussion

22.	Bulk Modulus equals?
A.	(-pΔV)/V
B.	(-pV)/ΔV
C.	(-pA)/ΔV
D.	(-pΔV)/A
Answer» C. (-pA)/ΔV

Discussion

23.	If water is flowing through a pipe of diameter 1 cm at 100 m/s, then find its viscosity (in Pa.s) if the Reynolds number of the flow is 1000
A.	10
B.	0.1
C.	100
D.	1
Answer» E.

Discussion

24.	A rod, of length L at room temperature and uniform area of cross section A, is made of a metal having coefficient of linear expansion α/°C. It is observed that an external compressive force F, is applied on each of its ends, prevents any change in the length of the rod, when its temperature rises by ΔTK. Young's modulus, Y, for this metal is:
A.	$\frac{{\rm{F}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}$
B.	$\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}$
C.	$\frac{{\rm{F}}}{{2{\rm{A}}\alpha {\rm{\Delta T}}}}$
D.	$\frac{{2{\rm{F}}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}$
Answer» B. $\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}$

Discussion

25.	A circular rod of 100 mm diameter and 500 mm length is subjected to a tensile force of 1000 kN. Determined the modulus of rigidity (G) if E = 2 × 105 N/mm2 and Poisson’s ratio = 0.3.
A.	0.335 × 105 N/mm2
B.	0.555 × 105 N/mm2
C.	0.7692 × 105 N/mm2
D.	0.2256 × 105 N/mm2
Answer» D. 0.2256 × 105 N/mm2

Discussion

26.	For small deformations, the stress and strain are proportional to each other. What is this known as?
A.	Hooke ’s law
B.	Gauss's Law
C.	Henry's Law
D.	Joule's Law
Answer» B. Gauss's Law

Discussion

27.	If the Young's Modulus of a metal wire of cross section area 4 mm2, experiencing 108 N of force is 1015 N/m2, then it is under how much strain?
A.	0.25
B.	0.05
C.	0.025
D.	0.005
Answer» D. 0.005

Discussion

28.	From among the given options, Poisson’s ratio is the highest for:
A.	wood
B.	rubber
C.	iron
D.	copper
Answer» C. iron

Discussion

29.	Following figure shows two processes A and B for a gas. If ∆QA and ∆QB are the amount of heat absorbed by the system in two cases, and ∆UA and ∆UB are changes in internal energies, respectively, then:
A.	ΔQA < ΔQB, ΔUA < ΔUB
B.	ΔQA > ΔQB, ΔUA > ΔUB
C.	ΔQA > ΔQB, ΔUA = ΔUB
D.	ΔQA = ΔQB, ΔUA = ΔUB
Answer» D. ΔQA = ΔQB, ΔUA = ΔUB

Discussion

30.	By what name is the analysis procedure based on Hooke's law known?
A.	Linear analysis
B.	Differential analysis
C.	Graphical analysis
D.	diagrammatic analysis
Answer» B. Differential analysis

Discussion

31.	If a 2 m long copper wire extends by 1 mm when it is experiencing 5 × 109 N/m2 stress, then the Young's Modulus of this wire is ___________.
A.	1013 N /m2
B.	1011 N/m2
C.	2.5 × 1013 N/m2
D.	2.5 × 1011 N/m2
Answer» B. 1011 N/m2

Discussion

32.	A solid sphere, of radius R acquires a terminal velocity v1 when falling (due to gravity) through a viscous fluid having a coefficient of viscosity η. The sphere is broken into 27 identical solid spheres. If each of these spheres acquires a terminal velocity, v2, when falling through the same fluid, the ratio $\left( {\frac{{{{\rm{v}}_1}}}{{{{\rm{v}}_2}}}} \right)$ equals:
A.	9
B.	1/27
C.	1/9
D.	27
Answer» B. 1/27

Discussion

33.	Poisson ratio is defined as
A.	Lateral strain divided by longitudinal strain
B.	Longitudinal strain divided by lateral strain
C.	Longitudinal strain divided by shearing strain
D.	Lateral strain times longitudinal strain
Answer» B. Longitudinal strain divided by lateral strain

Discussion

34.	If the Reynold's number is greater than 100000, then the flow is ______.
A.	Uniform
B.	Laminar
C.	Turbulent
D.	Streamline
Answer» D. Streamline

Discussion

35.	A wire of length L and cross-sectional area A is made of material of Young's modulus Y. If the wire is stretched by the amount x, then the work done is
A.	$\frac{{YA{x^2}}}{{2L}}$
B.	$\frac{{YA{x^2}}}{L}$
C.	$\frac{{YAx}}{{2L}}$
D.	$YA{x^2}L$
Answer» B. $\frac{{YA{x^2}}}{L}$

Discussion

36.	A 15 g mass of nitrogen gas is enclosed in a vessel at a temperature 27°C. Amount of heat transferred to the gas, so that rms velocity of molecules is doubled, is about:[Take R = 8.3 J/K mole]
A.	0.9 kJ
B.	6 kJ
C.	10 kJ
D.	14 kJ
Answer» D. 14 kJ

Discussion

37.	In a typical stress-strain curve for a metal wire, the point till where the body still returns to its original dimension when the load is removed is known as _____________.
A.	Yield point
B.	Fracture point
C.	Deformation point
D.	Plastic point
Answer» B. Fracture point

Discussion

38.	Out of solid, liquid and gas which has maximum elasticity ?
A.	Solid
B.	Gas
C.	Liquid
D.	Cannot be compared
Answer» B. Gas

Discussion

39.	Choose the wrong statement regarding moduli of elasticity.
A.	Greater the value of moduli of elasticity, more elastic is material
B.	With rise in temperature, elasticity of material decreases.
C.	For incompressible fluids the bulk modulus is infinite
D.	Shear modulus of material increases with rise in temperature
Answer» E.

Discussion

40.	A boy's catapult is made of rubber cord which is 42 cm long, with 6 mm diameter of cross-section and of negligible mass. The boy keeps a stone weighing 0.02 kg on it and stretches the cord by 20 cm by applying a constant force. When released, the stone flies off with a velocity of 20 ms-1. Neglect the change in area of cross-section of the cord while stretched. The Young's modulus of rubber is closest to:
A.	106 Nm-2
B.	104 Nm-2
C.	108 Nm-2
D.	103 Nm-2
Answer» B. 104 Nm-2

Discussion

41.	In an environment, brass and steel wires of length 1 m each with areas of cross section 1 mm2 are used. The wires are connected in series and one end of the combined wire is connected to a rigid support and other end is subjected to elongation. The stress required to produce a net elongation of 0.2 mm is,[Given, the Young’s modulus for steel and brass are, respectively, 120 × 109 N/m2 and 60 × 109 N/m2]
A.	8 × 106 N/m2
B.	4.0 × 106 N/m2
C.	1.8 × 106 N/m2
D.	0.2 × 106 N/m2
Answer» B. 4.0 × 106 N/m2

Discussion

42.	At 40°C, a brass wire of 1 mm radius is hung from the ceiling. A small mass, M is hung from the free end of the wire. When the wire is cooled down from 40°C to 20°C it regains its original length of 0.2 m. The value of M is close to:(Coefficient of linear expansion and Young's modulus of brass are 10-5/℃ and 1011 N/m2, respectively; g = 10 ms-2)
A.	9 kg
B.	0.5 kg
C.	1.5 kg
D.	0.9 kg
Answer» B. 0.5 kg

Discussion

43.	A uniform cylindrical rod of length ‘L’ and radius ‘r’, is made from a material whose Young's modulus of elasticity equals ‘Y’. When this rod is heated by temperature ‘T’ and simultaneously subjected to a net longitudinal compressional force ‘F’, its length remains unchanged. The coefficient of volume expansion, of the material of the rod, is (nearly) equal to:
A.	$\frac{{9{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$
B.	$\frac{{6{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$
C.	$\frac{{3{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$
D.	$\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$
Answer» D. $\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}$

Discussion

44.	Calculate the Reynolds number for a liquid of density 1 g/cm3, viscosity 8 × 10-4 Pa.s flowing at 0.5 m/s through a pipe of diameter 4 cm?
A.	2500
B.	40000
C.	25000
D.	4000
Answer» D. 4000

Discussion

45.	If a force 'F' is applied to stretch a wire of diameter 'd', of length 'L' and which is made of a material of Young's Modulus (Y) then the extension caused in it is equal to ___________.
A.	4FY/(πLd2)
B.	4FL/(πYd2)
C.	2FL/(πYd2)
D.	2FY/(πLd2)
Answer» C. 2FL/(πYd2)

Discussion

46.	In the relation, stress = k × strain, k is __________________.
A.	spring constant
B.	relative density
C.	modulus of elasticity
D.	factor of plasticity
Answer» D. factor of plasticity

Discussion

47.	A mode of fracture that is attended by extensive plastic deformation is called
A.	brittle fracture
B.	ductile fracture
C.	plastic fracture
D.	fatigue fracture
Answer» C. plastic fracture

Discussion

48.	In an experiment it is found that the bulk modulus (K) of a material is equal to its shear modulus (G). The Poisson's ratio is
A.	0.125
B.	0.25
C.	0.375
D.	0.5
Answer» B. 0.25

Discussion

49.	IN_WHICH_OF_THE_FOLLOWING_TEST_SPECIMEN_IS_IN_THE_FORM_OF_CANTILEVER_BEAM??$
A.	Izod test
B.	Rockwell harness test
C.	Charpy test
D.	All of the mentioned
Answer» B. Rockwell harness test

Discussion

50.	WHAT_TYPE_OF_WEAR_OCCURS_DUE_TO_AN_INTERACTION_OF_SURFACES_DUE_TO_ADHESION_OF_THE_METALS??$
A.	Adhesive wear
B.	Abrasive wear
C.	Fretting wear
D.	Erosive wear
Answer» B. Abrasive wear

Discussion

24.	A rod, of length L at room temperature and uniform area of cross section A, is made of a metal having coefficient of linear expansion α/°C. It is observed that an external compressive force F, is applied on each of its ends, prevents any change in the length of the rod, when its temperature rises by ΔTK. Young's modulus, Y, for this metal is:
A.	\(\frac{{\rm{F}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}\)
B.	\(\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}\)
C.	\(\frac{{\rm{F}}}{{2{\rm{A}}\alpha {\rm{\Delta T}}}}\)
D.	\(\frac{{2{\rm{F}}}}{{{\rm{A}}\alpha {\rm{\Delta T}}}}\)
Answer» B. \(\frac{{\rm{F}}}{{{\rm{A}}\alpha \left( {{\rm{\Delta T}} - 273} \right)}}\)

35.	A wire of length L and cross-sectional area A is made of material of Young's modulus Y. If the wire is stretched by the amount x, then the work done is
A.	\(\frac{{YA{x^2}}}{{2L}}\)
B.	\(\frac{{YA{x^2}}}{L}\)
C.	\(\frac{{YAx}}{{2L}}\)
D.	\(YA{x^2}L\)
Answer» B. \(\frac{{YA{x^2}}}{L}\)

43.	A uniform cylindrical rod of length ‘L’ and radius ‘r’, is made from a material whose Young's modulus of elasticity equals ‘Y’. When this rod is heated by temperature ‘T’ and simultaneously subjected to a net longitudinal compressional force ‘F’, its length remains unchanged. The coefficient of volume expansion, of the material of the rod, is (nearly) equal to:
A.	\(\frac{{9{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}\)
B.	\(\frac{{6{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}\)
C.	\(\frac{{3{\rm{F}}}}{{\left( {{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}\)
D.	\(\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}\)
Answer» D. \(\frac{{\rm{F}}}{{\left( {3{\rm{\pi }}{{\rm{r}}^2}{\rm{YT}}} \right)}}\)

Explore topic-wise MCQs in Engineering Materials Metallurgy.

The total number of scales used in Rockwell hardness test is?

In which of the following test specimen is in the form of cantilever beam?

Which of the following hardness test uses steel ball as indenter?

Property by virtue of which material can absorb strain energy without plastic deformation is called ____________

Material having same identical values a property in all directions can be termed as ____________

Permanent deformation of material with respect to time due to constant load and variable temperature is termed as ____________

Resistance developed by surface of any material is known as ____________

The property of a material to resist any elastic deformation is termed as ____________

Resistance of a material against any external force is termed as _______________

Deformation that occurs due to stress over a period of time is known as ____________

What type of wear occurs due to an interaction of surfaces due to adhesion of the metals?

The ability of a material to be formed by hammering or rolling is known as _________

The tendency of a deformed solid to regain its actual proportions instantly upon unloading known as ______________

If a 5 m long steel wire extends by 2.5 mm then the strain in it is ____________.

A steel wire having a radius of 2.0 mm, carrying a load of 4 kg, is hanging from a ceiling. Given that g = 3.1π ms-2, what will be the tensile stress that would be developed in the wire?

If speed (V), acceleration (a) and force (F) are considered as fundamental units, the dimension of Young's modulus will be

A square tungsten slab of side 30 cm and thickness 5 cm is subject to a shearing force (on its narrow face) of 7.5 x 107 N. The lower edge is riveted to the floor. How much (in cm) will the upper edge be displaced? (Shear modulus (G) of tungsten is 150 x 109 N/m2)

Pressure is a scalar quantity because

Bulk Modulus equals?

If water is flowing through a pipe of diameter 1 cm at 100 m/s, then find its viscosity (in Pa.s) if the Reynolds number of the flow is 1000

A circular rod of 100 mm diameter and 500 mm length is subjected to a tensile force of 1000 kN. Determined the modulus of rigidity (G) if E = 2 × 105 N/mm2 and Poisson’s ratio = 0.3​.

For small deformations, the stress and strain are proportional to each other. What is this known as?

If the Young's Modulus of a metal wire of cross section area 4 mm2, experiencing 108 N of force is 1015 N/m2, then it is under how much strain?

From among the given options, Poisson’s ratio is the highest for:

Following figure shows two processes A and B for a gas. If ∆QA and ∆QB are the amount of heat absorbed by the system in two cases, and ∆UA and ∆UB are changes in internal energies, respectively, then:

By what name is the analysis procedure based on Hooke's law known?

If a 2 m long copper wire extends by 1 mm when it is experiencing 5 × 109 N/m2 stress, then the Young's Modulus of this wire is ___________.

Poisson ratio is defined as

If the Reynold's number is greater than 100000, then the flow is ______.

A wire of length L and cross-sectional area A is made of material of Young's modulus Y. If the wire is stretched by the amount x, then the work done is

A 15 g mass of nitrogen gas is enclosed in a vessel at a temperature 27°C. Amount of heat transferred to the gas, so that rms velocity of molecules is doubled, is about:[Take R = 8.3 J/K mole]

In a typical stress-strain curve for a metal wire, the point till where the body still returns to its original dimension when the load is removed is known as _____________.

Out of solid, liquid and gas which has maximum elasticity ?

Choose the wrong statement regarding moduli of elasticity.

Calculate the Reynolds number for a liquid of density 1 g/cm3, viscosity 8 × 10-4 Pa.s flowing at 0.5 m/s through a pipe of diameter 4 cm?

If a force 'F' is applied to stretch a wire of diameter 'd', of length 'L' and which is made of a material of Young's Modulus (Y) then the extension caused in it is equal to ___________.

In the relation, stress = k × strain, k is __________________.

A mode of fracture that is attended by extensive plastic deformation is called

In an experiment it is found that the bulk modulus (K) of a material is equal to its shear modulus (G). The Poisson's ratio is

IN_WHICH_OF_THE_FOLLOWING_TEST_SPECIMEN_IS_IN_THE_FORM_OF_CANTILEVER_BEAM??$

WHAT_TYPE_OF_WEAR_OCCURS_DUE_TO_AN_INTERACTION_OF_SURFACES_DUE_TO_ADHESION_OF_THE_METALS??$

A circular rod of 100 mm diameter and 500 mm length is subjected to a tensile force of 1000 kN. Determined the modulus of rigidity (G) if E = 2 × 105 N/mm2 and Poisson’s ratio = 0.3.