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

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

1 Answer

Answer :

d) None
by

Related questions

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

Hoop stress in a thin vessel is a. pD/2t b. pD/4t c. pD/3t d. None

Description : Hoop stress in a thin vessel is a. pD/2t b. pD/4t c. pD/3t d. None

Last Answer : a. pD/2t

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

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

Description : 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

Last Answer : (A) pd/2t

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

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

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

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

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

If a curve is represented parametrically by the equations `x=4t^(3)+3` and `y=4+3t^(4)` and `(d^(2)x)/(dy^(2))/((dx)/(dy))^(n)` is constant then the v

Description : If a curve is represented parametrically by the equations `x=4t^(3)+3` and `y=4+3t^(4)` and `(d^(2)x)/(dy^(2))/((dx)/(dy))^(n)` is constant then the v

Last Answer : If a curve is represented parametrically by the equations `x=4t^(3)+3` and `y=4+3t^(4)` and `(d^(2) ... (dy))^(n)` is constant then the value of n, is

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

Considering σh, σl and σr, maximum shear stress will be a) (σh—σl) /2 b) (σl— σh) /2 c) (σh + σr) /2 d) None

Description : Considering σh, σl and σr, maximum shear stress will be a) (σh—σl) /2 b) (σl— σh) /2 c) (σh + σr) /2 d) None

Last Answer : c) (σh + σr) /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

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

Description : Which one is most important in a thin shell? a) d/t 10 c) Stresses are uniform d) None

Last Answer : c) Stresses are uniform

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

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

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

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

Last Answer : c. Length

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

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

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

Last Answer : c. Tension

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

Description : 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

Last Answer : b. Spherical shell

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

Last Answer : c. Radial stress

If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water at T°C, according to Stoke's law, is (A) V = 418 (G - 1) d² [(3T + 70)/100] (B) V = 418 (G - 1) d [(3T - 70)/100] (C) V = 418 (G - 1) d² [(2T + 70)/100] (D) V = 418 (G - 1) d 4 [(3T + 70)/100]

Description : If G is the specific gravity of particles of diameter d, the velocity of settlement V in still water  at T°C, according to Stoke's law, is  (A) V = 418 (G - 1) d² [(3T + 70)/100]  (B) V = 418 (G - 1) d [(3T - ... 1) d² [(2T + 70)/100]  (D) V = 418 (G - 1) d 4  [(3T + 70)/100] 

Last Answer : (A) V = 418 (G - 1) d² [(3T + 70)/100] 

Power transmitted by shaft is equal to a. Tw b. T/w c. w/T d. 2T/w

Description : Power transmitted by shaft is equal to a. Tw b. T/w c. w/T d. 2T/w

Last Answer : a. Tw

The ratio of maximum bending stress to maximum shear stress on the cross section when a shaft is simultaneously subjected to a torque T and bending moment M, a. T/M b. M/T c. 2T/M d. 2M/T

Description : The ratio of maximum bending stress to maximum shear stress on the cross section when a shaft is simultaneously subjected to a torque T and bending moment M, a. T/M b. M/T c. 2T/M d. 2M/T

Last Answer : d. 2M/T

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

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

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

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 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

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

Description : 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

Last Answer : c. Longitudinal as well as circumferential joint

Vessel is said to be thin if a. D/t =20 b. D/t=10 c. D/t >20 d. D/t >10

Description : Vessel is said to be thin if a. D/t =20 b. D/t=10 c. D/t >20 d. D/t >10

Last Answer : c. D/t >20

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 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

Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2` in coluomb, where t is second. What is the value of

Description : Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2` in coluomb, where t is second. What is the value of

Last Answer : Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2` ... . `2Omega` B. `1Omega` C. `4Omega` D. `5Omega`

Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2 in coluomb, where t is second. What is the value of

Description : Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2 in coluomb, where t is second. What is the value of

Last Answer : Charge passing through a conductor of cross-section area `A=0.3 m^(2)` is given by `q=3t^(2)+5t+2 in coluomb, ... ^(-5)m//s` D. `0.57xx10^(5)m//s`

The most important property for the spring material is (a) High elastic limit (b) High deflection value (c) Resistance to fatigue and shock (d) All of these

Description : The most important property for the spring material is (a) High elastic limit (b) High deflection value (c) Resistance to fatigue and shock (d) All of these

Last Answer : (d) All of these

he most common value of spring index lies between (a) 0 and 5 (b) 5 and 10 (c) 10 and 15 (d) None

Description : he most common value of spring index lies between (a) 0 and 5 (b) 5 and 10 (c) 10 and 15 (d) None

Last Answer : b) 5 and 10

Value of Wahl’s stress concentration factor is always (a) > 1 (b) = 1 (c) < 1 (d) None

Description : Value of Wahl’s stress concentration factor is always (a) > 1 (b) = 1 (c) < 1 (d) None

Last Answer : (a) > 1

The most important property for the spring material is (a) High elastic limit (b) High deflection value (c) Resistance to fatigue and shock (d) All of these

Description : The most important property for the spring material is (a) High elastic limit (b) High deflection value (c) Resistance to fatigue and shock (d) All of these

Last Answer : (d) All of these

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

Rankine’s formula is generally used when slenderness ratio lies in between (a) 0-60 (b) 0-80 (c) 0-100 (d) Any value

Description : Rankine’s formula is generally used when slenderness ratio lies in between (a) 0-60 (b) 0-80 (c) 0-100 (d) Any value

Last Answer : (d) Any value

For long columns, the value of buckling load is……………..crushing load. (a) Less than (b) More than (c) Equal to (d) None of these

Description : For long columns, the value of buckling load is……………..crushing load. (a) Less than (b) More than (c) Equal to (d) None of these

Last Answer : (a) Less than

In a fixed beam the total change of slope along the span is a. Zero b.infinite c. neglected d.assumed to be unit value

Description : In a fixed beam the total change of slope along the span is a. Zero b.infinite c. neglected d.assumed to be unit value

Last Answer : a. Zero

For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum deflection b. more value of maximum deflecction c.twice the value of maximum deflecction d.same value of maximum deflecction

Description : For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum deflection b. more value of maximum deflecction c.twice the value of maximum deflecction d.same value of maximum deflecction

Last Answer : a. lesser value of maximum deflection

For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum bending moment b. more value of maximum bending moment c.twice the value of maximum bending moment d.same value of maximum bending moment

Description : For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum bending moment b. more value of maximum bending moment c.twice the value of maximum bending moment d.same value of maximum bending moment

Last Answer : a. lesser value of maximum bending moment

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

The value of Poison’s ratio depends upon (a) Nature of load, tensile or compressive (b) Magnitude of load (c) Material of the test specimen (d) Dimensions of the test specimen

Description : The value of Poison’s ratio depends upon (a) Nature of load, tensile or compressive (b) Magnitude of load (c) Material of the test specimen (d) Dimensions of the test specimen

Last Answer : (c) Material of the test specimen