In the relation ( T/J = Gθ/L = τ/ R), the letter G denotes modulus of ______ a. elasticity b. plasticity c. rigidity d. resilience

In the relation ( T/J = Gθ/L = τ/ R), the letter G denotes modulus of ______
a. elasticity
b. plasticity
c. rigidity
d. resilience
by

1 Answer

Answer :

c. rigidity
by

Related questions

The relation governing the torsional torque in circular shafts is a. T/r=τ/l=Gθ/J b. T/J=τ/r=Gθ/l c. T/J=τ/l=Gθ/r d. T/l=τ/r=Gθ/J

Description : The relation governing the torsional torque in circular shafts is a. T/r=τ/l=Gθ/J b. T/J=τ/r=Gθ/l c. T/J=τ/l=Gθ/r d. T/l=τ/r=Gθ/J

Last Answer : b. T/J=τ/r=Gθ/l

Which of the following is measure of stiffness? a) Modulus of elasticity b) Modulus of plasticity c) Resilience d) Toughness

Description : Which of the following is measure of stiffness? a) Modulus of elasticity b) Modulus of plasticity c) Resilience d) Toughness

Last Answer : a) Modulus of elasticity

The ratio of lateral strain to linear strain is called (a) Modulus of Elasticity (b) Modulus of Rigidity (c) Bulk Modulus (d) Poisson’s Ratio

Description : The ratio of lateral strain to linear strain is called (a) Modulus of Elasticity (b) Modulus of Rigidity (c) Bulk Modulus (d) Poisson’s Ratio

Last Answer : (d) Poisson’s Ratio

Torsional rigidity of a shaft is defined as a. G/J b. GJ c. TJ d. T/J

Description : Torsional rigidity of a shaft is defined as a. G/J b. GJ c. TJ d. T/J

Last Answer : a. G/J

A circular shaft subjected to torsion undergoes a twist of 10in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2and if modulus of rigidity G = 0.8 x 106then the radius of the shaft should be (a) p/8 (b) p/27 (c) 18/p (d) 27/p

Description : A circular shaft subjected to torsion undergoes a twist of 10in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2and if modulus of rigidity G = 0.8 x 106then the radius of the shaft should be (a) p/8 (b) p/27 (c) 18/p (d) 27/p

Last Answer : (d) 27/p

The shafts are designed on the basis of a. strength and rigidity. b. ductility. c. malleablility. d. resilience.

Description : The shafts are designed on the basis of a. strength and rigidity. b. ductility. c. malleablility. d. resilience.

Last Answer : a. strength and rigidity.

Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by a. 2WL/E b. WL/E c. WL/2E d. WL/3E Where, E=Young’s modulus of elasticity of material

Description : Elongation of a bar of uniform cross section of length ‘L’, due to its own weight ‘W’ is given by a. 2WL/E b. WL/E c. WL/2E d. WL/3E Where, E=Young’s modulus of elasticity of material

Last Answer : c. WL/2E

18.The total extension of a taper rod of length ‘L’ and end diameters ‘D1’ and ‘D2’, subjected to a load (P), is given of a. 4PL/ΠE. D1D2 b. 3PL/ΠE. D1D2 c. 2PL/ΠE. D1D2 d. PL/ΠE.D1D2 Where E=Young’s modulus of elasticity

Description : 18.The total extension of a taper rod of length ‘L’ and end diameters ‘D1’ and ‘D2’, subjected to a load (P), is given of a. 4PL/ΠE. D1D2 b. 3PL/ΠE. D1D2 c. 2PL/ΠE. D1D2 d. PL/ΠE.D1D2 Where E=Young’s modulus of elasticity

Last Answer : a. 4PL/ΠE. D1D2

Torsional rigidity of a shaft is given by a. Gl/θ b. Tθ c. Tl/θ d. T/l

Description : Torsional rigidity of a shaft is given by a. Gl/θ b. Tθ c. Tl/θ d. T/l

Last Answer : c. Tl/θ

The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Description : The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Last Answer : b) Spring stiffness

Find total number coils in a spring having square and ground ends. Deflection in the spring is 6mm when load of 1100N is applied. Modulus of rigidity is 81370N/mm². Wire diameter and pitch circle diameter are 10mm and 50mm respectively. a) 7 b) 6 c) 5 d) 4

Description : Find total number coils in a spring having square and ground ends. Deflection in the spring is 6mm when load of 1100N is applied. Modulus of rigidity is 81370N/mm². Wire diameter and pitch circle diameter are 10mm and 50mm respectively. a) 7 b) 6 c) 5 d) 4

Last Answer : a) 7

Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively a. 11.8 turns b. 12.8 turns c. 13.3 turns d. None of the above

Description : Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively a. 11.8 turns b. 12.8 turns c. 13.3 turns d. None of the above

Last Answer : b. 12.8 turns

The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Description : The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Last Answer : (b) Spring stiffness

A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is 1o. The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of rigidity is 80 GPa. The outside diameter (in mm) of the shaft is _______. (a) 43 to 45 (b) 50to 60 (c) 70 to 80 (d) 85 to 100

Description : A hollow shaft of 1 m length is designed to transmit a power of 30 kW at 700 rpm. The maximum permissible angle of twist in the shaft is 1o. The inner diameter of the shaft is 0.7 times the outer diameter. The modulus of ... shaft is _______. (a) 43 to 45 (b) 50to 60 (c) 70 to 80 (d) 85 to 100

Last Answer : (a) 43 to 45

What is the product of sectional modulus and allowable bending stress called as? a. Moment of inertia b. Moment of rigidity c. Moment of resistance d. Radius of gyration

Description : What is the product of sectional modulus and allowable bending stress called as? a. Moment of inertia b. Moment of rigidity c. Moment of resistance d. Radius of gyration

Last Answer : c. Moment of resistance

The relationship between Young’s modulus (E), Modulus of rigidity (C) and Bulk modulus (K) is given by a. E=9CK/(C+3K) b. E=9CK/(2C+3K) c. E=9CK/(3C+K) d. E=9CK/(C-3K)

Description : The relationship between Young’s modulus (E), Modulus of rigidity (C) and Bulk modulus (K) is given by a. E=9CK/(C+3K) b. E=9CK/(2C+3K) c. E=9CK/(3C+K) d. E=9CK/(C-3K)

Last Answer : a. E=9CK/(C+3K)

Modulus of rigidity is (a)Tensile stress / Tensile strain (a)Shear stress / Shear strain (a)Tensile stress / Shear strain (a)Shear stress / Tensile strain

Description : Modulus of rigidity is (a)Tensile stress / Tensile strain (a)Shear stress / Shear strain (a)Tensile stress / Shear strain (a)Shear stress / Tensile strain

Last Answer : (a)Shear stress / Shear strain

The property of the material which allows it to be drawn into smaller section (a) Plasticity (b) Ductility (c) Elasticity (d) Malleability

Description : The property of the material which allows it to be drawn into smaller section (a) Plasticity (b) Ductility (c) Elasticity (d) Malleability

Last Answer : (b) Ductility

The property of a material by which it can be drawn to a smaller section by applying a tensile load is called (a) Elasticity (b) Plasticity (c) Ductility (d) Malleability

Description : The property of a material by which it can be drawn to a smaller section by applying a tensile load is called (a) Elasticity (b) Plasticity (c) Ductility (d) Malleabilityy

Last Answer : (c) Ductility

The property of a material by which it can be beaten or rolled into thin sheets, is called (a) Elasticity (b) Plasticity (c) Ductility (d) Malleability

Description : The property of a material by which it can be beaten or rolled into thin sheets, is called (a) Elasticity (b) Plasticity (c) Ductility (d) Malleability

Last Answer : (d) Malleability

The ability of the material to deform without breaking is called (a) Elasticity (b) Plasticity (c) Creep (d) None of these

Description : The ability of the material to deform without breaking is called (a) Elasticity (b) Plasticity (c) Creep (d) None of these

Last Answer : (b) Plasticity

Explain difference between modulus of resilience and modulus of rigidity ?

Description : Explain difference between modulus of resilience and modulus of rigidity ?

Last Answer : Modulus of resilience is the maximum strain energy stored in a material per unit volume and modulus of rigidity is the ratio of shearing stress to the shearing strain within the elastic limit.

Shear modulus G is given by (a) G = t/g (b) G = g/t (c) G = Tg/t (d) G = T/g

Description : Shear modulus G is given by (a) G = t/g (b) G = g/t (c) G = Tg/t (d) G = T/g

Last Answer : (a) G = t/g

A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the leaves are 100mm and 12mm respectively. If modulus of elasticity is 207000N/mm², calculate the initial nip. (a) 26.8mm (b) 24.9mm (c) 22.5mm (d)23.1mm

Description : A leaf spring consists of 3 extra full length leaves and 14 graduated length leaves. The maximum force that can act on the spring is 70kN and the distance between eyes of the spring is 1.2m. Width and thickness of the ... /mm², calculate the initial nip. (a) 26.8mm (b) 24.9mm (c) 22.5mm (d)23.1mm

Last Answer : b) 24.9mm

Bulk modulus of elasticity is a. Tensile stress / Tensile strain b. Shear stress / Shear strain c. Tensile stress / Shear strain d. Normal stress on each face of cube / Volumetric strain

Description : Bulk modulus of elasticity is a. Tensile stress / Tensile strain b. Shear stress / Shear strain c. Tensile stress / Shear strain d. Normal stress on each face of cube / Volumetric strain

Last Answer : d. Normal stress on each face of cube / Volumetric strain

Young’s Modulus of elasticity is (a)Tensile stress / Tensile strain (b)Shear stress / Shear strain (c)Tensile stress / Shear strain (d)Shear stress / Tensile strain

Description : Young’s Modulus of elasticity is (a)Tensile stress / Tensile strain (b)Shear stress / Shear strain (c)Tensile stress / Shear strain (d)Shear stress / Tensile strain

Last Answer : a)Tensile stress / Tensile strain

Euler's formula states that the buckling load for a column of length , both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are and respectively, is given by the relation (A) P = ²EI/l² (B) P = /EI (C) P = /l² (D) P = ²EI/l

Description : Euler's formula states that the buckling load for a column of length , both ends hinged and whose least moment of inertia and modulus of elasticity of the material of the column are and respectively, is given by the relation (A) P = ²EI/l² (B) P = /EI (C) P = /l² (D) P = ²EI/l

Last Answer : (A) P = ²EI/l²

Flexible shafts have ______ rigidity in bending moment. a) High b) Low c) Very high d) Extremely low

Description : Flexible shafts have ______ rigidity in bending moment. a) High b) Low c) Very high d) Extremely low

Last Answer : b) Low

The ratio of shear stress and shear strain of an elastic material, is (A) Modulus of Rigidity (B) Shear Modulus (C) Modulus of Elasticity (D) Both (a) and (b)

Description : The ratio of shear stress and shear strain of an elastic material, is  (A) Modulus of Rigidity  (B) Shear Modulus  (C) Modulus of Elasticity  (D) Both (a) and (b) 

Last Answer : (D) Both (a) and (b) 

If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of the material, the following relationship holds good (A) E = 3K (1 - 2/m) (B) E = 2N (1 + 1/m) (C) (3/2)K (1 - 2/m) = N (1 + 1/m) (D) All the above

Description : If E, N, K and 1/m are modulus of elasticity, modulus of rigidity. Bulk modulus and Poisson ratio of  the material, the following relationship holds good  (A) E = 3K (1 - 2/m)  (B) E = 2N (1 + 1/m)  (C) (3/2)K (1 - 2/m) = N (1 + 1/m)  (D) All the above 

Last Answer : (D) All the above 

.In case of a hollow shaft the average torsional energy/unit volume is given by a. (τ2/4C) x (D2+d2/D2) b. (τ2/C) x (D2+d2/D2) c. (τ2/4C) x (D+d/D2) d. (τ/C) x (D2+d2/D2)

Description : .In case of a hollow shaft the average torsional energy/unit volume is given by a. (τ2/4C) x (D2+d2/D2) b. (τ2/C) x (D2+d2/D2) c. (τ2/4C) x (D+d/D2) d. (τ/C) x (D2+d2/D2)

Last Answer : a. (τ2/4C) x (D2+d2/D2)

Calculate the shaft diameter on rigidity basis if torsional moment is 196000N-mm, length of shaft is 1000mm. Permissible angle of twist per meter is 0.5’ and take G=79300N/mm². a) None of the listed b) 41.2mm c) 35.8mm d) 38.8mm

Description : Calculate the shaft diameter on rigidity basis if torsional moment is 196000N-mm, length of shaft is 1000mm. Permissible angle of twist per meter is 0.5’ and take G=79300N/mm². a) None of the listed b) 41.2mm c) 35.8mm d) 38.8mm

Last Answer : b) 41.2mm

Torsional rigidity is defined as a. T/θ b. Cθ c. CIp d. = θ

Description : Torsional rigidity is defined as a. T/θ b. Cθ c. CIp d. = θ

Last Answer : c. CIp

For a solid or a hollow shaft subject to a twisting moment T, the torsional shearing stress t at a distance r from the centre will be (a) t = Tr/J (b) t = Tr (c) t = TJ/r (d) none of these

Description : For a solid or a hollow shaft subject to a twisting moment T, the torsional shearing stress t at a distance r from the centre will be (a) t = Tr/J (b) t = Tr (c) t = TJ/r (d) none of these

Last Answer : (a) t = Tr/J

Which of the following relation is correct regarding free torsional vibrations of a single motor system? a) Independent of modulus of rigidity b) Independent of polar moment of inertia c) Dependent on mass moment of inertia d) Independent of length of shaft

Description : Which of the following relation is correct regarding free torsional vibrations of a single motor system? a) Independent of modulus of rigidity b) Independent of polar moment of inertia c) Dependent on mass moment of inertia d) Independent of length of shaft

Last Answer : c) Dependent on mass moment of inertia

A shaft of length L is subject to a constant twisting moment T along its length L, then angle q through which one end of the bar will twist relative to other will be (a) T/g (b) T/GJ (c) GJ/TL (d) TL/GJ

Description : A shaft of length L is subject to a constant twisting moment T along its length L, then angle q through which one end of the bar will twist relative to other will be (a) T/g (b) T/GJ (c) GJ/TL (d) TL/GJ

Last Answer : (d) TL/GJ

The section modulus of a rectangular section about an axis through its C.G., is a. b/2 b. d/2 c. bd2/2 d. bd2/6

Description : The section modulus of a rectangular section about an axis through its C.G., is a. b/2 b. d/2 c. bd2/2 d. bd2/6

Last Answer : d. bd2/6

Resilience of spring is (a) Strain energy per unit length (b) Strain energy per unit area (c) Strain energy per unit mass (d) None

Description : Resilience of spring is (a) Strain energy per unit length (b) Strain energy per unit area (c) Strain energy per unit mass (d) None

Last Answer : (d) None

Which of the following relation represents torsional flexibility? a. GJ b. GL c. GJ / L d. L / GJ

Description : Which of the following relation represents torsional flexibility? a. GJ b. GL c. GJ / L d. L / GJ

Last Answer : d. L / GJ

While Young's modulus ‘E’ relates to change in length and bulk modulus ‘K’ relates to change in volume, modulus of rigidity ‘G’ relates to change in: A. weight B. density C. shape D. temperature

Description : While Young's modulus ‘E’ relates to change in length and bulk modulus ‘K’ relates to change in volume, modulus of rigidity ‘G’ relates to change in: A. weight B. density C. shape D. temperature

Last Answer : . shape

Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)? (A) E = 2G (1 + v) (B) E = G (1 + v) (C) E = G (1 + v)/2 (D) E = 2G (1 + 2v)

Description : Which of the following relationships is correct for relating the three elastic constants of an isotropic elastic material (where, E = Young's modulus, G = Modulus of rigidity or shear modulus v = Poisson's ratio)? (A) E = 2G (1 + v) (B) E = G (1 + v) (C) E = G (1 + v)/2 (D) E = 2G (1 + 2v)

Last Answer : (A) E = 2G (1 + v)

Brittleness is opposite to (a) Toughness (b) Plasticity (c) Malleability (d) None of these

Description : Brittleness is opposite to (a) Toughness (b) Plasticity (c) Malleability (d) None of these

Last Answer : b) Plasticity

A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the coil is (A) WR3n/Cr4 (B) 2WR3n/Cr4 (C) 3WR3n/Cr4 (D) 4WR3n/Cr

Description : A closely coiled helical spring of radius R, contains n turns and is subjected to an axial load W. If  the radius of the coil wire is r and modulus of rigidity of the coil material is C, the deflection of the  coil is  (A) WR3n/Cr4 (B) 2WR3n/Cr4 (C) 3WR3n/Cr4 (D) 4WR3n/Cr

Last Answer : (D) 4WR3n/Cr

A closely coiled helical spring of radius R, contains n turns and is subjected to an axial loadW. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is (A) WR/ 3 (B) 2WR/ 3 (C) 2WR/ 2 (D) 4WR/ 2

Description : A closely coiled helical spring of radius R, contains n turns and is subjected to an axial loadW. If the radius of the coil wire is r and modulus of rigidity of the coil material is C, the stress developed in the helical spring is (A) WR/ 3 (B) 2WR/ 3 (C) 2WR/ 2 (D) 4WR/ 2

Last Answer : (B) 2WR/ 3

Which of the following property is essential for spring materials? (A) Stiffness (B) Ductility (C) Resilience (D) Plasticity

Description : Which of the following property is essential for spring materials? (A) Stiffness (B) Ductility (C) Resilience (D) Plasticity

Last Answer : (C) Resilience

Spiral spring is quite rigid. (a) Yes (b) No it is flexible (c) It is of moderate rigidity (d) Rigidity can’t be determined

Description : Spiral spring is quite rigid. (a) Yes (b) No it is flexible (c) It is of moderate rigidity (d) Rigidity can’t be determined

Last Answer : (b) No it is flexible

In the theorem of three moments in the most general form a.two flexural rigidity are considered b. only one flexural rigidity is considered c.no flexural rigidity is considered d.flexural rigidity is doubled

Description : In the theorem of three moments in the most general form a.two flexural rigidity are considered b. only one flexural rigidity is considered c.no flexural rigidity is considered d.flexural rigidity is doubled

Last Answer : a.two flexural rigidity are considered

A simply supported beam carries uniformly distributed load of 20 kN/m over the length of 5 m. If flexural rigidity is 30000 kN.m2, what is the maximum deflection in the beam? a. 5.4 mm b. 1.08 mm c. 6.2 mm d. 8.6 mm

Description : A simply supported beam carries uniformly distributed load of 20 kN/m over the length of 5 m. If flexural rigidity is 30000 kN.m2, what is the maximum deflection in the beam? a. 5.4 mm b. 1.08 mm c. 6.2 mm d. 8.6 mm

Last Answer : a. 5.4 mm

The shafts will have same strength on the basis of torsional rigidity, if (a) diameter and length of both shafts is same (b) material of both shafts is same (c) angle of twist for both shafts is same (d) all of above conditions are satisfied

Description : The shafts will have same strength on the basis of torsional rigidity, if (a) diameter and length of both shafts is same (b) material of both shafts is same (c) angle of twist for both shafts is same (d) all of above conditions are satisfied

Last Answer : (d) all of above conditions are satisfied

Flexible shafts have ___ rigidity in torsion making them flexible. a) Low b) High c) Very high d) Infinitely small

Description : Flexible shafts have ___ rigidity in torsion making them flexible. a) Low b) High c) Very high d) Infinitely small

Last Answer : b) High