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

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
by

1 Answer

Answer :

2. Inner radius
by

Related questions

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 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

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

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

A thick cylinder is subjected to an internal pressure of 60 MPa. If the hoop stress on the outer surface is 150 MPa, then the hoop stress on the internal surface is a) 105 MPa b) 180 MPa c) 210 MPa d) 135 MPa.

Description : A thick cylinder is subjected to an internal pressure of 60 MPa. If the hoop stress on the outer surface is 150 MPa, then the hoop stress on the internal surface is a) 105 MPa b) 180 MPa c) 210 MPa d) 135 MPa.

Last Answer : c) 210 MPa

Which of the following is incorrect? a. In a solid shaft maximum shear stress occurs at radius = radius of shaft b. In a solid shaft maximum shear stress occurs at center c. In a hollow shaft maximum shear stress occurs at outer radius d. In a hollow shaft minimum shear stress occurs at inner radius

Description : Which of the following is incorrect? a. In a solid shaft maximum shear stress occurs at radius = radius of shaft b. In a solid shaft maximum shear stress occurs at center c. In a hollow ... maximum shear stress occurs at outer radius d. In a hollow shaft minimum shear stress occurs at inner radius

Last Answer : b. In a solid shaft maximum shear stress occurs at center

A hollow shaft has an inner diameter of 3.7 cm and an outer diameter of 4.0 cm. A 1 kN-m torque is applied to this shaft. What is the shear stress at the mid-radius of this shaft? (a) 117Mpa (b) 178 Mpa (c) 286 Mpa (d) 363 Mpa

Description : A hollow shaft has an inner diameter of 3.7 cm and an outer diameter of 4.0 cm. A 1 kN-m torque is applied to this shaft. What is the shear stress at the mid-radius of this shaft? (a) 117Mpa (b) 178 Mpa (c) 286 Mpa (d) 363 Mpa

Last Answer : (c) 286 Mpa

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.

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 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

Description : 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

Last Answer : b. Stresses are uniform over the entire thickness

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

What is the shear stress acting on the outer surface of a hollow shaft subjected to a torque of 100 Nm?(The inner and outer diameter of the shaft is 15 mm and 30 mm respectively.) a. 50.26 N/mm2 b. 40.24 N/mm2 c. 20.120 N/mm2 d. 8.74 N/mm2

Description : What is the shear stress acting on the outer surface of a hollow shaft subjected to a torque of 100 Nm?(The inner and outer diameter of the shaft is 15 mm and 30 mm respectively.) a. 50.26 N/mm2 b. 40.24 N/mm2 c. 20.120 N/mm2 d. 8.74 N/mm2

Last Answer : c. 20.120 N/mm2

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

A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5cm. Find the outer curved surface of the bowl. -Maths 9th

Description : A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5cm. Find the outer curved surface of the bowl. -Maths 9th

Last Answer : Inner radius of hemispherical bowl = 5cm Thickness of the bowl = 0.25 cm Outer radius of hemispherical bowl = (5+0.25) cm = 5.25 cm Formula for outer CSA of hemispherical bowl = 2πr2, where r is radius of ... 22/7) (5.25)2 = 173.25 Therefore, the outer curved surface area of the bowl is 173.25 cm2.

Maximum shear stress in a thick shell is a) (σh+ σl)/2 b) (σh+ σr)/2 c) (σh– σl)/2 d) None

Description : Maximum shear stress in a thick shell is a) (σh+ σl)/2 b) (σh+ σr)/2 c) (σh– σl)/2 d) None

Last Answer : b) (σh+ σr)/2

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 potential of a coaxial cylinder with charge density 1 unit , inner radius 1m and outer cylinder 2m is (in 10 9 ) a) 12.74 b) 13.47 c) 12.47 d) 13.74

Description : The potential of a coaxial cylinder with charge density 1 unit , inner radius 1m and outer cylinder 2m is (in 10 9 ) a) 12.74 b) 13.47 c) 12.47 d) 13.74

Last Answer : c) 12.47

Stress in the cross section of a shaft at the centre ________ a. is zero b. decreases linearly to the maximum value of at outer surface c. both a. and b. d. none of the above

Description : Stress in the cross section of a shaft at the centre ________ a. is zero b. decreases linearly to the maximum value of at outer surface c. both a. and b. d. none of the above

Last Answer : a. is zero

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

Description : 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

Last Answer : b) 1.5 kg/cm2

The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) (a)π/4fs(D2-d2)/D (b) π/4fs(D3-d3)/D (c) π/4fs(D4-d4)/D (d) π/4fs(D4-d4)/D

Description : The torque transmitted by a hollow shaft of outer diameter (D) and inner diameter (d) (a)π/4fs(D2-d2)/D (b) π/4fs(D3-d3)/D (c) π/4fs(D4-d4)/D (d) π/4fs(D4-d4)/D

Last Answer : (c) π/4fs(D4-d4)/D

The polar moment of inertia of a hollow shaft of outer diameter (D) and inner diameter (d) is given by. (a)π/16(D3-d3) (b) π/16(D4-d4) (c) π/16(D4-d4) (d) π/16(D4-d4/d)

Description : The polar moment of inertia of a hollow shaft of outer diameter (D) and inner diameter (d) is given by. (a)π/16(D3-d3) (b) π/16(D4-d4) (c) π/16(D4-d4) (d) π/16(D4-d4/d)

Last Answer : (b) π/16(D4-d4)

The ratio of strength of a hollow shaft to that of a solid shaft subjected to torsion if both are of the same material and of the same outer diameters, the inner diameter of hollow shaft being half of the outer diameter is a. 15/16 b. 16/15 c. 7/8 d. 8/7

Description : The ratio of strength of a hollow shaft to that of a solid shaft subjected to torsion if both are of the same material and of the same outer diameters, the inner diameter of hollow shaft being half of the outer diameter is a. 15/16 b. 16/15 c. 7/8 d. 8/7

Last Answer : a. 15/16

Determine the maximum shearing stress and elongation in a helical steel spring composed of 20 turns of 20-mm-diameter wire on a mean radius of 90 mm when the spring is supporting a load of 1.5 kN. and G = 83 GPa. a. 200 mm b. 105.4 mm c. 150 mm d. 250 mm

Description : Determine the maximum shearing stress and elongation in a helical steel spring composed of 20 turns of 20-mm-diameter wire on a mean radius of 90 mm when the spring is supporting a load of 1.5 kN. and G = 83 GPa. a. 200 mm b. 105.4 mm c. 150 mm d. 250 mm

Last Answer : b. 105.4 mm

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

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

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

Which stress is constant in a thick shell a) σh b) σl c) σr d) None

Description : Which stress is constant in a thick shell a) σh b) σl c) σr d) None

Last Answer : b) σl

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

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

Last Answer : b) σl

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

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

Last Answer : c. Principal tensile stress

The shear stress is minimum at (a) Axis of the shaft (b) Outer surface of the shaft (c) Anywhere inside the shaft (d) None of these

Description : The shear stress is minimum at (a) Axis of the shaft (b) Outer surface of the shaft (c) Anywhere inside the shaft (d) None of these

Last Answer : (c) Anywhere inside the shaft

A helical spring is fabricated by wrapping wire 19.05 mm in diameter around a forming cylinder 203.2 mm in diameter. Compute the number of turns required to permit an elongation of 101.6 mm. without exceeding a shearing stress of 124 N/mm2. G = 82737 N/mm2. a. 10 turns b. 20 turns c. 25 turns d. 30 turns

Description : A helical spring is fabricated by wrapping wire 19.05 mm in diameter around a forming cylinder 203.2 mm in diameter. Compute the number of turns required to permit an elongation of 101.6 mm. without exceeding a shearing ... G = 82737 N/mm2. a. 10 turns b. 20 turns c. 25 turns d. 30 turns

Last Answer : a. 10 turns

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

Longitudinal stress in a cylinder is given by [symbols have their usual meanings]. a) PD/2t b) 2PD/t c) PD/4t d) 4PD/t

Description : Longitudinal stress in a cylinder is given by [symbols have their usual meanings]. a) PD/2t b) 2PD/t c) PD/4t d) 4PD/t

Last Answer : c) PD/4t

Tangential stress in a cylinder is given by [symbols have their usual meanings]. a) PD/2t b) 2PD/t c) PD/4t d) 4PD/t

Description : Tangential stress in a cylinder is given by [symbols have their usual meanings]. a) PD/2t b) 2PD/t c) PD/4t d) 4PD/t

Last Answer : a) PD/2t

In case of laminar flow of fluid through a circular pipe, the (A) Shear stress over the cross-section is proportional to the distance from the surface of the pipe (B) Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder (C) Velocity profile varies hyperbolically and the shear stress remains constant over the cross-section (D) Average flow occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)

Description : In case of laminar flow of fluid through a circular pipe, the (A) Shear stress over the cross-section is proportional to the distance from the surface of the pipe (B) Surface of velocity distribution is a ... occurs at a radial distance of 0.5 r from the centre of the pipe (r = pipe radius)

Last Answer : (B) Surface of velocity distribution is a paraboloid of revolution, whose volume equals half the volume of circumscribing cylinder

The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is (a) One-half of the radius (b) One-third of the radius (c) One-quarter of the radius (d) One-fifth of the radius

Description : The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, ... One-third of the radius (c) One-quarter of the radius (d) One-fifth of the radius

Last Answer : (c) One-quarter of the radius

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

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

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

Last Answer : b) False

The criteria for the design of a shaft is the stress at (a) The external surface (b) The axis (c) Any inside layer (d) Any of these

Description : The criteria for the design of a shaft is the stress at (a) The external surface (b) The axis (c) Any inside layer (d) Any of these

Last Answer : (a) The external surface

Large diameter sewers subjected to external pressure alone, are reinforced A. Near the inner surface of the pipe B. Near the outer surface of the pipe C. Both A. and B. D. With elliptical cage

Description : Large diameter sewers subjected to external pressure alone, are reinforced A. Near the inner surface of the pipe B. Near the outer surface of the pipe C. Both A. and B. D. With elliptical cage

Last Answer : ANS: D

Real stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

Description : Real stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

Last Answer : b) Changing area of cross section

Unit stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

Description : Unit stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

Last Answer : (a) Original area of cross section

The maximum shear stress in spring wire is induced at (A) Inner surface of the coil (B) Outer surface of the coil (C) Central surface of the coil (D) End coils

Description : The maximum shear stress in spring wire is induced at (A) Inner surface of the coil (B) Outer surface of the coil (C) Central surface of the coil (D) End coils

Last Answer : (A) Inner surface of the coil

If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque when t attains maximum shear stress fs the ratio of inner diameter to outer diameter, is 17/64 (fs/N) (A) 1/2 (B) 1/3 (C) 1/4 (D) 1/5

Description : If the strain energy stored per unit volume in a hollow shaft subjected to a pure torque  when t attains maximum shear stress fs  the ratio of inner diameter to outer diameter, is 17/64  (fs/N)  (A) 1/2  (B) 1/3  (C) 1/4  (D) 1/5

Last Answer : (C) 1/4 

. The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C-1 respectively. The ambient air is at 30°C and the heat transfer co-efficient between the outer surface of wall and air is 20 W.m-2 .°C-1 . The rate of heat loss from the outer surface in W.m-2 is (A) 165.4 (B) 167.5 (C) 172.5 (D) 175

Description : . The inner wall of a furnace is at a temperature of 700°C. The composite wall is made of two substances, 10 and 20 cm thick with thermal conductivities of 0.05 and 0.1 W.m-1.°C-1 respectively. The ambient air is at 30°C ... from the outer surface in W.m-2 is (A) 165.4 (B) 167.5 (C) 172.5 (D) 175

Last Answer : (A) 165.4

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 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

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

Description : 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

Last Answer : c. Hoop stress

Compute the maximum shearing stress developed in a phosphor bronze spring having mean diameter of 200 mm and consisting of 24 turns of 20-mm diameter wire when the spring is stretched 100 mm. and G = 42 GPa. a. 51 MPa b. 31.89 MPa c. 80 MPa d. 70 MPa

Description : Compute the maximum shearing stress developed in a phosphor bronze spring having mean diameter of 200 mm and consisting of 24 turns of 20-mm diameter wire when the spring is stretched 100 mm. and G = 42 GPa. a. 51 MPa b. 31.89 MPa c. 80 MPa d. 70 MPa

Last Answer : b. 31.89 MPa