Is it true Elastic deformation occurs when a material deforms as stress is applied?

Is it true Elastic deformation occurs when a material deforms as stress is applied?
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Pick out the correct statement. (A) Materials exhibiting high elasticity obey Hooke's law (B) The elastic behaviour of rubber under compression is the same as its behaviour under tension (C) The damping capacity of a material is due to its plastic deformation (D) The stress required to cause plastic flow in polycrystalline material is

Description : Pick out the correct statement. (A) Materials exhibiting high elasticity obey Hooke's law (B) The elastic behaviour of rubber under compression is the same as its behaviour under tension (C) ... to its plastic deformation (D) The stress required to cause plastic flow in polycrystalline material is

Last Answer : Option B

Pick out the correct statement. (A) Stainless steel is nothing but chromium coated steel (B) Hardening of a soft metal can be done by alloying it with another metal or non-metal (C) Plastic deformation of a material is its temporary distortion under the action of applied stress (D) Rusting of iron is not electrochemical in nature

Description : Pick out the correct statement. (A) Stainless steel is nothing but chromium coated steel (B) Hardening of a soft metal can be done by alloying it with another metal or non-metal (C) ... its temporary distortion under the action of applied stress (D) Rusting of iron is not electrochemical in nature

Last Answer : (B) Hardening of a soft metal can be done by alloying it with another metal or non-metal

Hooke's law (A) Applies to elastic deformation (B) Applies beyond limit of proportionality in stress-strain curve (C) States that stress is inversely proportional to strain upto elastic limit (D) None of these

Description : Hooke's law (A) Applies to elastic deformation (B) Applies beyond limit of proportionality in stress-strain curve (C) States that stress is inversely proportional to strain upto elastic limit (D) None of these

Last Answer : (A) Applies to elastic deformation

Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is proportional to the age of the member at the time of loading. (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members

Description : Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is ... to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members

Last Answer : (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete

At yield point of a test piece, the material (A) Obeys Hooke's law (B) Behaves in an elastic manner (C) Regains its original shape on removal of the load(D) Undergoes plastic deformation

Description : At yield point of a test piece, the material  (A) Obeys Hooke's law  (B) Behaves in an elastic manner  (C) Regains its original shape on removal of the load  (D) Undergoes plastic deformation 

Last Answer : (D) Undergoes plastic deformation 

Hot & cold working of material causes its __________ deformation. (A) Visco-elastic (B) Isotropic (C) Elastic (D) Plastic

Description : Hot & cold working of material causes its __________ deformation. (A) Visco-elastic (B) Isotropic (C) Elastic (D) Plastic

Last Answer : (D) Plastic

The material in which large deformation is possible before absolute failure by rupture takes place, is known as (a) Ductile (b) Plastic (c) Brittle (d) Elastic

Description : The material in which large deformation is possible before absolute failure by rupture takes place, is known as (a) Ductile (b) Plastic (c) Brittle (d) Elastic

Last Answer : Ductile

. A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid. (A) Newtonian (B) Non-Newtonian (C) Ideal (D) Incompressible

Description : . A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid. (A) Newtonian (B) Non-Newtonian (C) Ideal (D) Incompressible

Last Answer : (A) Newtonian

The deformation of a solid when stress is applied is called a) Strain b) Elasticity c) Rigidity d) Pressure

Description : The deformation of a solid when stress is applied is called a) Strain b) Elasticity c) Rigidity d) Pressure

Last Answer : a) Strain

Which of the following are true about plasticity? a) Permanent Deformation b) Ability to retain deformation under load or after removal of load c) Plastic deformation is greater than elastic deformation d) All of the mentioned

Description : Which of the following are true about plasticity? a) Permanent Deformation b) Ability to retain deformation under load or after removal of load c) Plastic deformation is greater than elastic deformation d) All of the mentioned

Last Answer : d) All of the mentioned

Deformation that occurs due to stress over a period of time is known as ____________ a) Wear resistance b) Fatigue c) Creep d) Fracture

Description : Deformation that occurs due to stress over a period of time is known as ____________ a) Wear resistance b) Fatigue c) Creep d) Fracture

Last Answer : c) Creep

Slow and progressive deformation of a material with time under constant stress is called (A) Creep (B) Erosion (C) Resilience (D) None of these

Description : Slow and progressive deformation of a material with time under constant stress is called (A) Creep (B) Erosion (C) Resilience (D) None of these

Last Answer : (A) Creep

The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength. (A) Creep (B) Endurance (C) Fatigue (D) None of these

Description : The highest stress that a material can withstand for a specified length of time without excessive deformation is called the __________ strength. (A) Creep (B) Endurance (C) Fatigue (D) None of these

Last Answer : Option A

Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Description : Synthetic rubber (A) Deforms, if stretched to double of its original dimension (B) Is brittle at low temperature (C) Is softer at higher temperature (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Last Answer : (D) Is highly permeable to air & water and is readily attacked by chemicals & atmospheric gases

Which of the following is not a characteristic observed in material failure by fatigue fracture? (A) Plastic deformation of material does not occur (B) Initiation of crack from below the surface does not occur (C) Initiation of crack occurs on the surface of the machine part (D) Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

Description : Which of the following is not a characteristic observed in material failure by fatigue fracture? (A) Plastic deformation of material does not occur (B) Initiation of crack from below the surface does ... (D) Presence of both rough & smooth zone with conchoidal markings in smooth zone of the surface

Last Answer : Option B

Lead pipe is (A) Especially resistant to solutions containing H2SO4 (B) Usually joined by burning (e.g. by melting to adjacent pieces with a torch) (C) Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain (D) All (A), (B) and (C)

Description : Lead pipe is (A) Especially resistant to solutions containing H2SO4 (B) Usually joined by burning (e.g. by melting to adjacent pieces with a torch) (C) Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C

Substances that elongate considerably and undergo plastic deformation before they break are known as A. brittle substances B. breakable substances C. ductile substances D. elastic substances

Description : Substances that elongate considerably and undergo plastic deformation before they break are known as A. brittle substances B. breakable substances C. ductile substances D. elastic substances

Last Answer : ductile substances

For elasto-hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For elasto-hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (C) There should be elastic deformation of the parts in contact

For hydrostatic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For hydrostatic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (B) There should be external source like pump to supply lubricant under pressure

For hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to supply lubricant under pressure (C) There should be elastic deformation of the parts in contact (D) There should be metal to metal contact

Description : For hydrodynamic lubrication (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space (B) There should be external source like pump to ... be elastic deformation of the parts in contact (D) There should be metal to metal contact

Last Answer : (A) There should be relative motion between the surfaces of the journal and the bearing and wedge shaped clearance space

A member which does not regain its original shape after removed of load producing deformation is said (A) Plastic (B) Elastic (C) Rigid (D) None of these

Description : A member which does not regain its original shape after removed of load producing deformation is said (A) Plastic (B) Elastic (C) Rigid (D) None of these

Last Answer : (A) Plastic

In a singly reinforced beam (A) Compression is borne entirely by concrete (B) Steel possesses initial stresses when embedded in concrete (C) Plane sections transverse to the centre line of the beam before bending remain plane after bending (D) Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

Description : In a singly reinforced beam (A) Compression is borne entirely by concrete (B) Steel possesses initial stresses when embedded in concrete (C) Plane sections transverse to the centre line ... Elastic moduli for concrete and steel have different values within the limits of deformation of the beam

Last Answer : Answer: Option C

Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum Principal stress theory (d) None

Description : Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum Principal stress theory (d) None

Last Answer : (c) Thirdly Maximum Principal stress theory

Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum shear stress theory (d) None

Description : Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum shear stress theory (d) None

Last Answer : (d) None

Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning? (A) Elastic shortening of concrete (B) Shrinkage of concrete (C) Creep of concrete (D) Loss due to frictio

Description : Which of the following losses of pre-stress occurs only in pre-tensioning and not in posttensioning? (A) Elastic shortening of concrete (B) Shrinkage of concrete (C) Creep of concrete (D) Loss due to friction

Last Answer : Answer: Option A

Which of the following facts are true for resilience? a) Ability of material to absorb energy when deformed elastically b) Ability to retain deformation under the application of load or after removal of load c) Ability of material to absorb energy when deformed plastically d) None of the mentioned

Description : Which of the following facts are true for resilience? a) Ability of material to absorb energy when deformed elastically b) Ability to retain deformation under the application of load or after removal ... c) Ability of material to absorb energy when deformed plastically d) None of the mentioned

Last Answer : a) Ability of material to absorb energy when deformed elastically

What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it? (1) Elasticity (2) Strain (3) Elastic Limit (4) Stress

Description : What is the maximum value of deforming force upto which a material shows elastic property and above which the material loses it? (1) Elasticity (2) Strain (3) Elastic Limit (4) Stress

Last Answer : (3) Elastic Limit Explanation: The Maximum Extent to which a solid may be stretched without permanent alteration of size or shape.

What is the maximum value of deforming force up to which a material shows elastic property and above which the material loses it? (1) Elasticity (2) Strain (3) Elastic Limit (4) Stress

Description : What is the maximum value of deforming force up to which a material shows elastic property and above which the material loses it? (1) Elasticity (2) Strain (3) Elastic Limit (4) Stress

Last Answer : (4) Elastic Limit Explanation: The Maximum Extent to which a solid may be stretched without permanent alteration of size or shape.

Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ?

Description : Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ?

Last Answer : A stress in excess of elastic limit, with no external force to oppose it, will relieve itself by plastic deformation until it reaches the value of the yield stress.

Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ?

Description : Why is it that the maximum value which the residual stress can reach is the elastic limit of the material ?

Last Answer : A stress in excess of elastic limit, with no external force to oppose it, will relieve itself by plastic deformation until it reaches the value of the yield stress.

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) 

Maximum shear stress theory for the failure of a material at the elastic limit, is known (A) Guest's or Trecas' theory (B) St. Venant's theory (C) Rankine's theory (D) Haig's theory

Description : Maximum shear stress theory for the failure of a material at the elastic limit, is known  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Haig's theory

Last Answer : (A) Guest's or Trecas' theory

Maximum principal stress theory for the failure of a material at elastic point, is known (A) Guest's or Trecas' theory (B) St. Venant's theory (C) Rankine's theory (D) Von Mises' theory

Description : Maximum principal stress theory for the failure of a material at elastic point, is known  (A) Guest's or Trecas' theory  (B) St. Venant's theory  (C) Rankine's theory  (D) Von Mises' theory

Last Answer : (C) Rankine's theory 

The stress at which extension of a material takes place more quickly as compared to the increase in load, is called (A) Elastic point (B) Plastic point (C) Breaking point (D) Yielding point

Description : The stress at which extension of a material takes place more quickly as compared to the increase in load, is called (A) Elastic point (B) Plastic point (C) Breaking point (D) Yielding point

Last Answer : (D) Yielding point

Pick up the correct statement from the following: (A) The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance (B) In visco-elastic material, stress-strain relation is dependent on time (C) An orthotropic material has different properties in three mutually perpendicular directions (D) All the above

Description : Pick up the correct statement from the following: (A) The distance of the eccentric axial load from the C.G. beyond which tension develops, is known as kern distance (B) In visco ... (C) An orthotropic material has different properties in three mutually perpendicular directions (D) All the above

Last Answer : (D) All the above

The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material. (A) Elastic (B) Ultimate (C) Yielding (D) Breaking

Description : The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material. (A) Elastic (B) Ultimate (C) Yielding (D) Breaking

Last Answer : (C) Yielding

Why Is It That The Maximum Value Which The Residual Stress Can Reach Is The Elastic Limit Of The Material?

Description : Why Is It That The Maximum Value Which The Residual Stress Can Reach Is The Elastic Limit Of The Material?

Last Answer : A stress more than the elastic limit, with no external force to oppose it, we relieve itself by plastic deformation until it reaches the value of the yield stress.

When stress is increased beyond elastic limit and material is permanently changed this property is a) Permanent stress b) Elasticity c) Yield strength d) Plasticity

Description : When stress is increased beyond elastic limit and material is permanently changed this property is a) Permanent stress b) Elasticity c) Yield strength d) Plasticity

Last Answer : d) Plasticity

In a simple bending theory, one of the assumption is that the material of the beam is isotropic. This assumption means that the a. normal stress remains constant in all directions b. normal stress varies linearly in the material c. elastic constants are same in all the directions d. elastic constants varies linearly in the material

Description : In a simple bending theory, one of the assumption is that the material of the beam is isotropic. This assumption means that the a. normal stress remains constant in all directions b. ... c. elastic constants are same in all the directions d. elastic constants varies linearly in the material

Last Answer : c. elastic constants are same in all the directions

The stress at which extension of a material takes place more quickly as compared to increase in load, is called (a) No elastic zone (b) Plastic point (c) Yield point (d) Breaking point

Description : The stress at which extension of a material takes place more quickly as compared to increase in load, is called (a) No elastic zone (b) Plastic point (c) Yield point (d) Breaking point

Last Answer : (c) Yield point

Slow plastic deformation of metals under a constant stress is termed as __________ failure. (A) Fatigue (B) Endurance (C) Creep (D) None of these

Description : Slow plastic deformation of metals under a constant stress is termed as __________ failure. (A) Fatigue (B) Endurance (C) Creep (D) None of these

Last Answer : (C) Creep

An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic? (A) Sewage sludge (B) Rubber latex (C) Blood (D) Sugar solution

Description : An ideal plastic substance indicates no deformation, when stressed upto yield stress, but behaves like a Newtonian fluid beyond yield stress. Which of the following is an ideal plastic? (A) Sewage sludge (B) Rubber latex (C) Blood (D) Sugar solution

Last Answer : (A) Sewage sludge

As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to (where, μ = fluid viscosity) (A) 1/μ (B) μ (C) μ 2 (D) 1/μ

Description : As per Newton's law of viscosity, the shear stress for a given rate of angular deformation of fluid is proportional to (where, μ = fluid viscosity) (A) 1/μ (B) μ (C) μ 2 (D) 1/μ

Last Answer : (B) μ

Newton's law of viscosity relates the (A) Shear stress and velocity (B) Velocity gradient and pressure intensity (C) Shear stress and rate of angular deformation in a fluid (D) Pressure gradient and rate of angular deformation

Description : Newton's law of viscosity relates the (A) Shear stress and velocity (B) Velocity gradient and pressure intensity (C) Shear stress and rate of angular deformation in a fluid (D) Pressure gradient and rate of angular deformation

Last Answer : (C) Shear stress and rate of angular deformation in a fluid

Pick up the assumption for the design of a pre-stressed concrete member from the following: (A) A transverse plane section remains a plane after bending (B) During deformation limits, Hook's law is equally applicable to concrete as well as to steel (C) Variation of stress in reinforcement due to changes in external loading is negligible (D) All the above

Description : Pick up the assumption for the design of a pre-stressed concrete member from the following: (A) A transverse plane section remains a plane after bending (B) During deformation limits, Hook's ... of stress in reinforcement due to changes in external loading is negligible (D) All the above

Last Answer : Answer: Option D

In a static fluid (A) Resistance to shear stress is small (B) Fluid pressure is zero (C) Linear deformation is small (D) Only normal stresses can exist

Description : In a static fluid (A) Resistance to shear stress is small (B) Fluid pressure is zero (C) Linear deformation is small (D) Only normal stresses can exist

Last Answer : Answer: Option D

Shear stress causes (a) Deformation (b) Distortion (c) Deformation as well as distortion (d) None

Description : Shear stress causes (a) Deformation (b) Distortion (c) Deformation as well as distortion (d) None

Last Answer : b) Distortion

Shear stress causes (a) Deformation (b) Distortion (c) Displacement (d) None

Description : Shear stress causes (a) Deformation (b) Distortion (c) Displacement (d) None

Last Answer : (b) Distortion

Shear stress causes (a) Deformation (b)Elongation (c) Contraction (d) None

Description : Shear stress causes (a) Deformation (b)Elongation (c) Contraction (d) None

Last Answer : (d) None

When a bar is subjected to increase in temperature and its deformation is prevented, the stress induced in the bar is (a) Tensile (b) Compressive (c) Shear (d) None of the above

Description : When a bar is subjected to increase in temperature and its deformation is prevented, the stress induced in the bar is (a) Tensile (b) Compressive (c) Shear (d) None of the above

Last Answer : (b) Compressive