Elasticity

Q. In a material, if the strain is 0.01 and the Young's modulus is 200 GPa, what is the stress in the material?
  • A. 2 MPa
  • B. 20 MPa
  • C. 200 MPa
  • D. 2000 MPa
Q. In a shear stress-strain relationship, what does the slope of the linear portion represent?
  • A. Young's modulus
  • B. Shear modulus
  • C. Bulk modulus
  • D. Tensile strength
Q. In a tensile test, if a material exhibits a linear stress-strain relationship, what type of deformation is it undergoing?
  • A. Elastic deformation
  • B. Plastic deformation
  • C. Brittle fracture
  • D. Ductile fracture
Q. In a tensile test, if a material shows a linear relationship between stress and strain up to a certain point, this point is known as:
  • A. Yield point
  • B. Ultimate tensile strength
  • C. Elastic limit
  • D. Fracture point
Q. In a tensile test, if a material shows a linear relationship between stress and strain, it is said to be in which region?
  • A. Plastic region
  • B. Elastic region
  • C. Yield point
  • D. Fracture point
Q. In a tensile test, if the stress-strain curve of a material shows a linear relationship, what does this indicate?
  • A. The material is elastic
  • B. The material is plastic
  • C. The material has failed
  • D. The material is brittle
Q. In a tensile test, if the stress-strain curve shows a linear relationship, what does this indicate about the material?
  • A. It is inelastic
  • B. It is elastic
  • C. It has reached its yield point
  • D. It will break immediately
Q. In which of the following cases does a material exhibit plastic deformation?
  • A. When the stress is below the yield point
  • B. When the stress exceeds the yield point
  • C. When the material is unloaded
  • D. When the material is cooled
Q. In which of the following scenarios does a material exhibit elastic behavior?
  • A. When it returns to its original shape after removing the load
  • B. When it permanently deforms
  • C. When it breaks
  • D. When it undergoes plastic deformation
Q. In which of the following scenarios does a material exhibit plastic deformation?
  • A. When the stress is below the yield point
  • B. When the stress exceeds the yield point
  • C. When the material is unloaded
  • D. When the material is cooled
Q. In which of the following scenarios does elastic deformation occur?
  • A. A rubber band being stretched
  • B. A metal rod being permanently bent
  • C. A glass breaking
  • D. A clay being molded
Q. The modulus of resilience is defined as:
  • A. The energy per unit volume stored in a material up to the yield point
  • B. The total energy absorbed by a material before fracture
  • C. The ratio of stress to strain
  • D. The maximum stress a material can withstand
Q. What happens to the Young's modulus of a material as temperature increases?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Q. What happens to the Young's modulus of a material when it is heated?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. What is Poisson's ratio?
  • A. Lateral strain/Longitudinal strain
  • B. Longitudinal strain/Lateral strain
  • C. Stress/Strain
  • D. Strain/Stress
Q. What is the definition of Young's modulus?
  • A. The ratio of tensile stress to tensile strain
  • B. The ratio of compressive stress to compressive strain
  • C. The ratio of shear stress to shear strain
  • D. The ratio of bulk stress to bulk strain
Q. What is the formula for the modulus of resilience?
  • A. U = 1/2 * σ * ε
  • B. U = σ * ε
  • C. U = 1/2 * ε^2
  • D. U = σ^2 / 2
Q. What is the formula for Young's modulus?
  • A. Stress/Strain
  • B. Strain/Stress
  • C. Force/Area
  • D. Area/Force
Q. What is the relationship between bulk modulus and compressibility?
  • A. Bulk modulus is the inverse of compressibility
  • B. Bulk modulus is equal to compressibility
  • C. Bulk modulus is the square of compressibility
  • D. There is no relationship
Q. What is the relationship between shear modulus (G) and Young's modulus (E)?
  • A. G = E / (2(1 + ν))
  • B. G = E * (2(1 + ν))
  • C. G = E / (1 + ν)
  • D. G = E * (1 + ν)
Q. What is the relationship between shear modulus and Young's modulus for isotropic materials?
  • A. G = E/2(1 + ν)
  • B. G = E(1 + ν)/2
  • C. G = E/3
  • D. G = 2E
Q. What is the relationship between shear modulus and Young's modulus?
  • A. They are equal
  • B. Shear modulus is always greater
  • C. Shear modulus is less than Young's modulus
  • D. They are inversely proportional
Q. What is the relationship between shear stress and shear strain in a material?
  • A. Shear modulus
  • B. Bulk modulus
  • C. Young's modulus
  • D. Poisson's ratio
Q. What is the relationship between stress and strain in the elastic region of a material?
  • A. Stress is directly proportional to strain
  • B. Stress is inversely proportional to strain
  • C. Stress is independent of strain
  • D. Stress is proportional to the square of strain
Q. Which of the following describes Poisson's ratio?
  • A. Lateral strain / Longitudinal strain
  • B. Longitudinal strain / Lateral strain
  • C. Stress / Strain
  • D. Strain / Stress
Q. Which of the following is NOT a type of elastic deformation?
  • A. Tensile deformation
  • B. Compressive deformation
  • C. Shear deformation
  • D. Plastic deformation
Q. Which of the following is NOT a type of modulus of elasticity?
  • A. Young's modulus
  • B. Shear modulus
  • C. Bulk modulus
  • D. Tensile modulus
Q. Which of the following is NOT a type of stress?
  • A. Tensile stress
  • B. Compressive stress
  • C. Shear stress
  • D. Thermal stress
Q. Which of the following is true about elastic potential energy stored in a stretched wire?
  • A. It is proportional to the square of the elongation
  • B. It is proportional to the elongation
  • C. It is independent of the elongation
  • D. It is inversely proportional to the elongation
Q. Which of the following materials has the highest Young's modulus?
  • A. Rubber
  • B. Steel
  • C. Wood
  • D. Plastic
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