Description : Modulus of elasticity is defined as: A. The stress at the proportional limit B. The stress-strain ratio within the proportional limit
Last Answer : B. The stress-strain ratio within the proportional limit
Description : The ratio of stress to strain i: a) Modulus of conductivity b) Modules of Elasticity c) Modulus of electricity d) Modulus of Viscosity
Last Answer : b) Modules of Elasticity
Description : The ductility of metal is usually expressed in terms of the: A. Yield strength (point where the material is not longer elastic) B. Percent elongation C. Modulus of elasticity (stiffness of the material)
Last Answer : B. Percent elongation
Description : The deformation per unit length is called (a) Strain (b) Stress (c) Elasticity (d) None of these
Last Answer : (a) Strain
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.
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.
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)
Description : The Modulus of Elasticity for a material refers to: w) the ability of a material to resist corrosion x) the ratio of stress over strain y) the maximum load over the cross sectional area z) none of the above
Last Answer : ANSWER: X -- THE RATIO OF STRESS OVER STRAIN
Description : Ratio of tensile to strain is A. Young's modulus B. stress C. stiffness D. tensile force
Last Answer : Young's modulus
Description : The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called (A) Stiffness (B) Proof resilience (C) Proof stress (D) Proof load
Last Answer : (B) Proof resilience
Description : Which of the following does not affect the elasticity of retentive clasp? A. Length of the arm B. The cross section shape C. The material used D. The undercut area
Last Answer : D. The undercut area
Description : Pick out the wrong statement. (A) The equivalent stiffness of two springs (of equal stiffness 'S') in series is S/2 while in parallel is 2S (B) For a helical spring, deflection is ... is less than the buckling load (D) Modulus of resilience is proportional to (stress at elastic limit)2
Last Answer : (C) Crushing load or columns is less than the buckling load
Description : The deformation of a spring produced by a unit load is called (A) Stiffness (B) Flexibility (C) Influence coefficient (D) Unit strain
Last Answer : (B) Flexibility
Description : The ratio of stress to volumetric strain is called a) Shear Modulus b) Young’s Modulus c) Bulk Modulus d) Modulus of elasticity
Last Answer : c) Bulk Modulus
Description : The deformation of a solid when stress is applied is called a) Strain b) Elasticity c) Rigidity d) Pressure
Last Answer : a) Strain
Description : The ability of a body to return to its original shape is called: a) Plasticity b) Elasticity c) Strain d) Stress
Last Answer : b) Elasticity
Description : Bulk modulus of elasticity is a. Tensile stress / Tensile strain b. Shear stress / Shear strain c. Tensile stress / Shear strain d. Normal stress on each face of cube / Volumetric strain
Last Answer : d. Normal stress on each face of cube / Volumetric strain
Description : Young’s Modulus of elasticity is (a)Tensile stress / Tensile strain (b)Shear stress / Shear strain (c)Tensile stress / Shear strain (d)Shear stress / Tensile strain
Last Answer : a)Tensile stress / Tensile strain
Description : The modules of elasticity of steel shall be taken as (a) 100kN/mm2 (b) 200 kN/mm2 (c) 250 kN/mm2 (d) 300 kN/mm2
Last Answer : (b) 200 kN/mm2
Description : What is Hooke's Law? (1) Stress is inversely proportional to strain. (2) Stress is directly proportional to strain. (3) Stress and strain are dependent on each other. (4) Stress and strain are independent of each other.
Last Answer : (2) Stress is directly proportional to strain. Explanation: Hooke's law is a principle of physics that states that the force (F) needed to extend or compress a spring by some distance X scales linearly with respect to that distance.
Description : What is Hooke’s Law? (1) Stress is inversely proportional to strain. (2) Stress is directly proportional to strain. (3) Stress and strain are dependent on each other. (4) Stress and strain are independent of each other.
Last Answer : (2) Stress is directly proportional to strain. Explanation: Hooke’s law is a principle of physics that states that the force (F) needed to extend or compress a spring by some distance X scales linearly with respect to that distance.
Description : Hooke's law states that stress and strain are (A) Directly proportional (B) Inversely proportional (C) Curvilinearly related (D) None of these
Last Answer : (A) Directly proportional
Description : The law which states, "Within elastic limits strain produced is proportional to the stress producing it", is known as (A) Bernoulli's law (B) Stress law (C) Hooke's law (D) Poisson's law
Last Answer : (C) Hooke's law
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
Description : According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain. (A) Equal to (B) Directly proportional (C) Inversely proportional (D) None of these
Last Answer : Answer: Option B
Description : 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. ... the distance from the neutral axis d. strain is proportional to the distance from the neutral axis
Last Answer : d. strain is proportional to the distance from the neutral axis
Description : The statement : stress is proportional to strain, i.e. the Hooke’s law holds good upto (a) Elastic Limit (b) Proportional Limit (c) Plastic Limit (d) Yield point
Last Answer : (b) Proportional Limit
Description : The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the (A) Ability to absorb shock (B) Capacity to store energy (C) Ratio of the wire & coil diameters (D) Load to produce unit deflection
Last Answer : Option D
Description : What is NOT related to the normal aging process? A. Progressive bone loss B. Reduced elasticity of muscles C. Decreased elasticity of the skin D. Lower pain threshold
Last Answer : D. Lower pain threshold
Description : A Gold clasp is more elastic than Cobalt Chrome, but Co-Chrome has high modulus of elasticity. A. The first statement is false the second is true B. Both are true C. The first is true the second is false D. Both are false
Last Answer : B. Both are true
Description : Wax patterns ARE NOT to be left on the bench for long time because of, A. Distortion B. Lost of elasticity
Last Answer : A. Distortion
Description : The load on a spring per unit deflection, is called (A) Stiffness (B) Proof resilience (C) Proof stress (D) Proof load
Last Answer : (A) Stiffness
Description : Which of the following is measure of stiffness? a) Modulus of elasticity b) Modulus of plasticity c) Resilience d) Toughness
Last Answer : a) Modulus of elasticity
Description : Strain is defined as :** A. An external force B. An internal force to oppose external load C. Deformity opposed the applied load
Last Answer : C. Deformity opposed the applied load
Description : 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
Last Answer : (c) Strain energy, deflection and strength
Description : The natural frequency of the spring mass is inversely proportional to A. Stiffness B. Mass C. Density D. Deflection
Last Answer : B. Mass
Description : A member which is subjected to reversible tensile or compressive stress may fail at a stress lower than the ultimate stress of the material. This property of metal, is called (A) Plasticity of the ... ) Elasticity of the metal (C) Fatigue of the metal (D) Workability of the metal
Last Answer : (C) Fatigue of the metal
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
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
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
Description : The ratio of lateral strain to linear strain is called (a) Modulus of Elasticity (b) Modulus of Rigidity (c) Bulk Modulus (d) Poisson’s Ratio
Last Answer : (d) Poisson’s Ratio
Description : The area under stress-strain curve represents a.Hardness of material b.Breaking strength of the material c.Energy required to cause failure d.Toughness of material e.Malleabbility of material
Last Answer : c. Energy required to cause failure
Description : A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Shear Stress Theory (b) Secondly Maximum Shear Strain Energy Theory (c) Both (a) & (b) (d) None
Last Answer : (c) Both (a) & (b)
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
Description : Pick out the wrong statement. (A) Cold cracking of a weld is due to the presence of hydrogen gas in the weld (B) True stress is given by, σ = σE (1 + εE), where σE and εE ... in the iron blast furnace (D) High residual stress at the surface is beneficial for fatigue properties of a material
Last Answer : Option C
Description : A prestressed concrete section is said to have failed in strength at the moment when all the material in the section has exhausted its (a) Stress limitations (b) Strain limitations (c) Stress as well as strain limitations (b) Laad limitations
Last Answer : (a) Stress limitations
Description : Which of the following theories of failure is most appropriate for a brittle material? (a) Maximum principal strain theory (b) Maximum principal stress theory (c) Maximum shear stress theory (d) Maximum strain energy theory
Last Answer : (b) Maximum principal stress theory
Description : Which stress strain curve is more steep (a) For a ductile material (b) For a brittle material (c) For a pure metal (d) None
Last Answer : b) For a brittle material