Lame’s equation used to find the thickness of the cylinder is based on maximum strain failure. a) True b) False

Lame’s equation used to find the thickness of the cylinder is based on maximum strain  failure.
a) True
b) False
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Answer :

b) False
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Related questions

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

Description : 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 ... is 10MPa. a) 2.05mm b) 4.2mm c) 5.07mm d) None of the listed

Last Answer : c) 5.07mm

The maximum strain in a thick cylinder under pi will be a) σh/E+μ σl/E b) σh/ E+ μσr/E c) σr/E+μ σl/E d) None

Description : The maximum strain in a thick cylinder under pi will be a) σh/E+μ σl/E b) σh/ E+ μσr/E c) σr/E+μ σl/E d) None

Last Answer : b) σh/ E+ μσr/E

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

Description : 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 ... and zero at the outer surface d) maximum at the outer surface and zero at the inner surface

Last Answer : c) maximum at the inner surface and zero at the outer surface

In a thick-cylinder pressurized from inside, the hoop stress is maximum at a) The center of the wall thickness b) the outer radius c) the inner radius d) both the inner and the outer radii

Description : In a thick-cylinder pressurized from inside, the hoop stress is maximum at a) The center of the wall thickness b) the outer radius c) the inner radius d) both the inner and the outer radii

Last Answer : c) the inner radius

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

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

Last Answer : a) thick cylindrical shells

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

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

Description : 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

Last Answer : b) Thick Cylinders

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

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

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

A hollow prismatic beam of circular section is subjected to a torsional moment. The maximum shear stress occurs at (a) inner wall of cross section (b) middle of thickness (c) outer surface of shaft (d) none of these

Description : A hollow prismatic beam of circular section is subjected to a torsional moment. The maximum shear stress occurs at (a) inner wall of cross section (b) middle of thickness (c) outer surface of shaft (d) none of these

Last Answer : (c) outer surface of shaft

Maximum shear stress in a hollow shaft subjected to a torsional moment is at the a. Middle of thickness. b. At the inner surface of the shaft. c. At the outer surface of the shaft. d. At the middle surface of the shaft.

Description : Maximum shear stress in a hollow shaft subjected to a torsional moment is at the a. Middle of thickness. b. At the inner surface of the shaft. c. At the outer surface of the shaft. d. At the middle surface of the shaft.

Last Answer : c. At the outer surface of the shaft.

A thick cylinder under pi and po will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

Description : A thick cylinder under pi and po will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

Last Answer : 2. Inner radius

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

Last Answer : 2. Inner radius

A thick cylinder under external fluid pressure’ p0′ will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

Description : A thick cylinder under external fluid pressure’ p0′ will have maximum stress at the 1. Outer radius 2. Inner radius 3. Mean radius 4. None

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An open-ended cylinder of radius and thickness is subjected to internal pressure . The Young's modulus for the material is and Poisson's ratio is . The longitudinal strain is (A) Zero (B) pr/TE (C) pr/2TE (D) None of these

Description : An open-ended cylinder of radius and thickness is subjected to internal pressure . The Young's modulus for the material is and Poisson's ratio is . The longitudinal strain is (A) Zero (B) pr/TE (C) pr/2TE (D) None of these

Last Answer : (A) Zero

Strength of a shaft a. Is equal to maximum shear stress in the shaft at the time of elastic failure b. Is equal to maximum shear stress in the shaft at the time of rupture c. Is equal to torsional rigidity d. Is ability to resist maximum twisting moment

Description : Strength of a shaft a. Is equal to maximum shear stress in the shaft at the time of elastic failure b. Is equal to maximum shear stress in the shaft at the time of rupture c. Is equal to torsional rigidity d. Is ability to resist maximum twisting moment

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Most important features of any spring are (a) Deflection, stiffness and strength (b) Stiffness, bending and shear strengths (c) Strain energy, deflection and strength (d) None

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The strain energy stored in a spiral spring is given by? (a) 12M²L/Ebtᵌ (b) 6M²L/Ebtᵌ (c) 8M²L/Ebtᵌ (d) None of the listed

Description : The strain energy stored in a spiral spring is given by? (a) 12M²L/Ebtᵌ (b) 6M²L/Ebtᵌ (c) 8M²L/Ebtᵌ (d) None of the listed

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The springs in brakes and clutches are used (a) To apply forces (b) To measure forces (c) To absorb shocks (d) To absorb strain energy

Description : The springs in brakes and clutches are used (a) To apply forces (b) To measure forces (c) To absorb shocks (d) To absorb strain energy

Last Answer : (a) To apply forces

In spring balances, the spring is used (a) To apply forces (b) To absorb shocks (c) To store strain energy (d) To measure forces

Description : In spring balances, the spring is used (a) To apply forces (b) To absorb shocks (c) To store strain energy (d) To measure forces

Last Answer : (d) To measure forces

Strain energy in a spring should be (a) Large (b) Small (c) Zero (d) None

Description : Strain energy in a spring should be (a) Large (b) Small (c) Zero (d) None

Last Answer : (a) Large

Strain energy in a leaf spring is (a) W x δ (b) W x δ/3 (c) W x δ/2 (d) None

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Last Answer : (c) W x δ/2

Most important features of any spring are (a) Deflection, stiffness and strength (b) Stiffness, bending and shear strengths (c) Strain energy, deflection and strength (d) None

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Last Answer : (c) Strain energy, deflection and strength

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

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Strain energy in a spring should be (a) Large (b) Small (c) Zero (d) None

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Strain energy in a close coiled helical spring is (a) τ2/8G (b) τ2/16G (c) τ2/4G (d) None

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The springs in brakes and clutches are used (a) To apply forces (b) To measure forces (c) To absorb shocks (d) To absorb strain energy

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In spring balances, the spring is used (a) To apply forces (b) To absorb shocks (c) To store strain energy (d) To measure forces

Description : In spring balances, the spring is used (a) To apply forces (b) To absorb shocks (c) To store strain energy (d) To measure forces

Last Answer : (d) To measure forces

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

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In the strain energy method of slope and deflection ,load is applied a. gradually b.suddenly c.with an impact. d.None.

Description : In the strain energy method of slope and deflection ,load is applied a. gradually b.suddenly c.with an impact. d.None.

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The strain energy will be higher in which shaft under the same torque (a) Solid shaft (b) Hollow shaft (c) Same in Solid as well as hollow shaft (d) None

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In a simple bending theory, one of the assumption is that the plane sections before bending remain plane after bending. This assumption means that a. stress is uniform throughout the beam b. strain is uniform throughout the beam c. stress is proportional to the distance from the neutral axis d. strain is proportional to the distance from the neutral axis

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When a beam is subjected to a bending moment the strain in a layer is …………the distance from the neutral axis. (a) Independent of (b) Directly proportional to (c) Inversely proportional to (d) None of these

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

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

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The graphical representation of variation of axial load on y axis and position of cross section along x axis is called as _____ (a) Bending moment diagram (b) Shear force diagram (c) Stress-strain diagram (d) Trust diagram

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Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None

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Linear stress strain curve is for a (a) Load ∞ displacement (b) Load ∞ ( 1/displacement) (c) Load = ( displacement)2 (d) None

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Description : Shear strain is a (a) Linear strain (b) Parabolic strain (c) Logarithmic strain (d) None

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In a composite body, consisting of two different materials...........will be same in both materials. (a) Stress (b) Strain (c) Both stress and strain (d) None of these

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Last Answer : (b) Strain

When a wire is stretched to double in length, the longitudinal strain produced in it is (a) 0.5 (b) 1.0 (c) 1.5 (d) 2.0

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