Stresses in a thin cylindrical shell under internal pressure is independent of a. Diameter b. Thickness c. Length d. Diameter and thickness

Stresses in a thin cylindrical shell under internal pressure is independent of a. Diameter
b. Thickness
c. Length
d. Diameter and thickness
by

1 Answer

Answer :

c. Length
by

Related questions

What is the ratio of hoop stresses in a spherical vs cylindrical shell of same diameter, thickness and under same pressure? a. 4:1 b. 2:1 c. 1:2 d. 1:4

Description : What is the ratio of hoop stresses in a spherical vs cylindrical shell of same diameter, thickness and under same pressure? a. 4:1 b. 2:1 c. 1:2 d. 1:4

Last Answer : c. 1:2

When a thin cylindrical shell is subjected to an internal pressure, there will be a) a decrease in diameter and length of the shell b) an increase in diameter and length of the shell c) an increase in diameter and decrease in length of the shell d) a decrease in diameter and increase in length of the shell

Description : When a thin cylindrical shell is subjected to an internal pressure, there will be a) a decrease in diameter and length of the shell b) an increase in diameter and length of the shell c) an ... and decrease in length of the shell d) a decrease in diameter and increase in length of the shell

Last Answer : b) an increase in diameter and length of the shell

Among the cylindrical and spherical thin vessels of same material, diameter and pressure which has the lesser thickness a. Cylindrical shell b. Spherical shell c. Cylindrical shell with semi spherical heads d. None

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A thin cylindrical shell under internal pressure can fail by a. Shear b. Compression c. Tension d. None

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In a thick cylindrical shell subjected to an internal pressure (p), the radial stress across the thickness of a cylinder is a) maximum at the outer surface and minimum at the inner surface b) maximum at the inner surface and minimum at the outer surface c) maximum at the inner surface and zero at the outer surface d) maximum at the outer surface and zero at the inner surface

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Design of a thin shell under pressure is done on the basis of a. Radial stress b. Longitudinal stress c. Hoop stress d. All the three stresses

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A thin cylindrical under internal pressure can fail along the a. Longitudinal joint b. Circumferential joint c. Longitudinal as well as circumferential joint d. None

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Last Answer : c. Longitudinal as well as circumferential joint

Lame's theory is associated with a) thick cylindrical shells b) thin cylindrical shells c) direct and bending stresses d) none of these

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A thin spherical shell under internal pressure will fail under a. Maximum shear stress b. Principal compressive stress c. Principal tensile stress d. None

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Which one is most important in a thin shell? a) d/t <20 b) d/t> 10 c) Stresses are uniform d) None

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A vessel is said to be thin if a. Its wall has less thickness b. Stresses are uniform over the entire thickness c. Stresses vary at inner and at outer radius d. None of the above

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A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the thickness of the cylinder if it is twice the diameter of the cylinder. a) 12mm b) 4mm c) 8mm d) 16mm

Description : A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the thickness of the cylinder if it is twice the diameter of the cylinder. a) 12mm b) 4mm c) 8mm d) 16mm

Last Answer : c) 8mm

Cylinder having inner diameter to wall thickness ratio less than 15 are a) Thin cylinders b) Thick Cylinders c) Moderate cylinders d) none of the above

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Last Answer : b) Thick Cylinders

A spherical pressure vessel is made of thin magnesium plate 0.25 cm thick. The main diameter of the sphere is 600 cm and allowable stress in tension is 900 kg/cm2. The safe internal gas pressure for the vessel would be a) 0.5 kg/cm2 b) 1.5 kg/cm2 c) 4.5 kg/cm2 d) 5.7 kg/cm2

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Last Answer : b) 1.5 kg/cm2

The thick shell is made from laminations to get (a) Increased stresses (b) Decreased stresses (c) Uniform stresses (d) None

Description : The thick shell is made from laminations to get (a) Increased stresses (b) Decreased stresses (c) Uniform stresses (d) None

Last Answer : (c) Uniform stresses

A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the length of the cylinder if it is twice the diameter of the cylinder. a) 540mm b) 270mm c) 400mm d) 350mm

Description : A seamless cylinder of storage capacity of 0.03mᵌis subjected to an internal pressure of 21MPa. The ultimate strength of material of cylinder is 350N/mm².Determine the length of the cylinder if it is twice the diameter of the cylinder. a) 540mm b) 270mm c) 400mm d) 350mm

Last Answer : a) 540mm

A water main 1 m in diameter contains a fluid having pressure 1 N/mm2. If the maximum permissible tensile stress in the metal is 20 N/mm2, th thickness of the metal required would be a) 2 cm b) 2.5cm c) 1 cm d) 0.5 cm

Description : A water main 1 m in diameter contains a fluid having pressure 1 N/mm2. If the maximum permissible tensile stress in the metal is 20 N/mm2, th thickness of the metal required would be a) 2 cm b) 2.5cm c) 1 cm d) 0.5 cm

Last Answer : b) 2.5cm

The piston rod of a hydraulic cylinder exerts an operating force of 10kN. The allowable stress in the cylinder is 45N/mm². Calculate the thickness of the cylinder using Lame’s equation. Diameter of the cylinder is 40mm and pressure in cylinder is 10MPa. a) 2.05mm b) 4.2mm c) 5.07mm d) None of the listed

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Last Answer : c) 5.07mm

In a thin shell which stress is negligible a) σh b) σl c) σr d) None

Description : In a thin shell which stress is negligible a) σh b) σl c) σr d) None

Last Answer : c) σr

Value of σr in a thin shell is a) pD/2t b) pD/4t c) pD/3t d) None

Description : Value of σr in a thin shell is a) pD/2t b) pD/4t c) pD/3t d) None

Last Answer : d) None

Longitudinal strain in a thin shell is a) σh /E b) σl /E c) σr /E d) None

Description : Longitudinal strain in a thin shell is a) σh /E b) σl /E c) σr /E d) None

Last Answer : d) None

Hoop strain in a thin shell is a) σh /E b) σl /E c) 3 σh /E d) None

Description : Hoop strain in a thin shell is a) σh /E b) σl /E c) 3 σh /E d) None

Last Answer : d) None

Which is most predominant type of failure in a thin shell? a. Bearing failure b. Compression failure c. Crushing failure d. None

Description : Which is most predominant type of failure in a thin shell? a. Bearing failure b. Compression failure c. Crushing failure d. None

Last Answer : d. None

Radial stress in a thin shell is given by a. pD/2t b. pD/4t c. pD/3t d. None

Description : Radial stress in a thin shell is given by a. pD/2t b. pD/4t c. pD/3t d. None

Last Answer : d. None

Which stress is the least in a thin shell a. Longitudinal stress b. Hoop stress c. Radial stress d. None

Description : Which stress is the least in a thin shell a. Longitudinal stress b. Hoop stress c. Radial stress d. None

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If is the internal pressure in a thin cylinder of diameter and thickness , the developed hoop stress, is (A) pd/2t (B) pd/4t (C) pd/t (D) 2pd/t

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Last Answer : (A) pd/2t

A short, hollow cast iron cylinder with a wall thickness of 1 cm is to carry a compressive load of 10 tonnes. If the working stress in compression is 800 kg/cm2, the outside diameter of the cylinder should not be less than a) 0.5cm b) 5 cm c) 2.5cm d) 4.5 cm

Description : A short, hollow cast iron cylinder with a wall thickness of 1 cm is to carry a compressive load of 10 tonnes. If the working stress in compression is 800 kg/cm2, the outside diameter of the cylinder should not be less than a) 0.5cm b) 5 cm c) 2.5cm d) 4.5 cm

Last Answer : b) 5 cm

Keeping loading same but increasing the length, normal stresses in a long column will (a) Increase (b) Decrease (c) No change (d) None

Description : Keeping loading same but increasing the length, normal stresses in a long column will (a) Increase (b) Decrease (c) No change (d) None

Last Answer : (b) Decrease

Keeping loading same but increasing the length, shear stresses in a beam will (a) Increase (b) Decrease (c) No change (d) None

Description : Keeping loading same but increasing the length, shear stresses in a beam will (a) Increase (b) Decrease (c) No change (d) None

Last Answer : (c) No change

Keeping loading same but increasing the length, normal stresses in a beam will (a) Increase (b) Decrease (c) No change (d) None

Description : Keeping loading same but increasing the length, normal stresses in a beam will (a) Increase (b) Decrease (c) No change (d) None

Last Answer : (a) Increase

Ratio of diameters of two shafts joined in series is 2. If the two shafts have the same material and the same length the ratio of their shear stresses is a. 2 b. 4 c. 8 d. 16

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A close coiled spring under axial load produces (a) Bending stresses (b) Shear stresses (c) Tensile stresses (d) None

Description : A close coiled spring under axial load produces (a) Bending stresses (b) Shear stresses (c) Tensile stresses (d) None

Last Answer : (b) Shear stresses

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. Calculate the initial pre load required to close the nip. (a) 4332.2N (b) 4674.1N (c) 4985.4N (d) Can’t be determined

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 ... close the nip. (a) 4332.2N (b) 4674.1N (c) 4985.4N (d) Can't be determined

Last Answer : (b) 4674.1N

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

Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm

Description : Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm

Last Answer : c. 587.1 mm

A thick cylinder under internal fluid pressure’ pi will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

Description : A thick cylinder under internal fluid pressure’ pi will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

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What will happen if stresses induced due to surge in the spring exceeds the endurance limit stress of the spring. (a) Fatigue Failure (b) Fracture (c) None of the listed (d) Nipping

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Propagation of fatigue failure is always due to compressive stresses. (a) Due to bending (b) Due to tensile (c) Due to fatigue (d) None of the listed

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eaf springs are designed on the basis of (a) Maximum bending stresses (b) Maximum deflection (c) Maximum bending as well as maximum deflection (d) None

Description : eaf springs are designed on the basis of (a) Maximum bending stresses (b) Maximum deflection (c) Maximum bending as well as maximum deflection (d) None

Last Answer : (c) Maximum bending as well as maximum deflection

Hoop shrinking in thick cylinders is done to achieve (a) Increased stresses (b) Decreased stresses (c ) Uniform stresses (d) None

Description : Hoop shrinking in thick cylinders is done to achieve (a) Increased stresses (b) Decreased stresses (c ) Uniform stresses (d) None

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Nature of stresses produced in buckling and bending are (a) Same (b) Different (c) Only tensile (d) None

Description : Nature of stresses produced in buckling and bending are (a) Same (b) Different (c) Only tensile (d) None

Last Answer : (a) Same

In shafts with keyways the allowable stresses are usually ------------ proportional to the twisting moment. a.25% b. 50% c. 75% d. 95%

Description : In shafts with keyways the allowable stresses are usually ------------ proportional to the twisting moment. a.25% b. 50% c. 75% d. 95%

Last Answer : c. 75%

Tensile and compressive stresses in a beam of symmetrical section are (a) σt = σc (b) σt > σc (c) σt < σc (d) None

Description : Tensile and compressive stresses in a beam of symmetrical section are (a) σt = σc (b) σt > σc (c) σt < σc (d) None

Last Answer : (a) σt = σc

Variation of bending stresses in a beam have (a) Parabolic variation (b) Linear variation (c) Cubical variation (d) None

Description : Variation of bending stresses in a beam have (a) Parabolic variation (b) Linear variation (c) Cubical variation (d) None

Last Answer : (b) Linear variation

Tensile and compressive stresses in a beam of un-symmetrical section are (a) σt = σc (b) σt =0 (c) σc =0 (d) None

Description : Tensile and compressive stresses in a beam of un-symmetrical section are (a) σt = σc (b) σt =0 (c) σc =0 (d) None

Last Answer : (d) None

Tensile and compressive stresses in a beam of symmetrical section are (a) σt = σc (b) σt > σc (c) σt < σc (d) None

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Last Answer : (a) σt = σc

Stiffness of the spring can be increased by a. increase the number of turns b. increase the free length c. decrease the number of turns d. decrease the spring wire diameter

Description : Stiffness of the spring can be increased by a. increase the number of turns b. increase the free length c. decrease the number of turns d. decrease the spring wire diameter

Last Answer : c. decrease the number

A compression spring is made of music wire of 2 mm diameter having a shear strength and shear modulus of 800 Mpa and 80 Gpa respectively. The mean coil diameter is 20mm, free length is 40 mm, and the number of active coils is 10. If the mean coil diameter is reduced to 10 mm, the stiffness of the spring is approximately a. increased by 8 times b. decreased by 2 times c. increased by 2 times d. decreased by 8 times

Description : A compression spring is made of music wire of 2 mm diameter having a shear strength and shear modulus of 800 Mpa and 80 Gpa respectively. The mean coil diameter is 20mm, free length is 40 mm, and the number ... by 8 times b. decreased by 2 times c. increased by 2 times d. decreased by 8 times

Last Answer : a. increased by 8 times

The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose endsare hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2, the permissible maximumcrippling load will be (a) 1.288 tonnes (b) 12.88 (c) 128.8 tonnes (d) 288.0

Description : The length of a column, having a uniform circular cross-section of 7.5 cm diameter and whose endsare hinged, is 5 m. If the value of E for the material is 2100 tonnes/cm2, the permissible maximumcrippling load will be (a) 1.288 tonnes (b) 12.88 (c) 128.8 tonnes (d) 288.0

Last Answer : (b) 12.88