PEC EPE Exam Solid Mechanics MCQ Questions
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The modulus of elasticity is a measure of a material’s:
a) Strength
b) Stiffness
c) Toughness
d) Ductility
Answer: b) Stiffness
The stress that causes a material to deform permanently is called:
a) Elastic stress
b) Yield stress
c) Ultimate stress
d) Residual stress
Answer: b) Yield stress
The ability of a material to absorb energy without fracture is known as:
a) Elasticity
b) Toughness
c) Ductility
d) Hardness
Answer: b) Toughness
The change in length per unit original length in a material subjected to tensile or compressive stress is known as:
a) Shear strain
b) Poisson’s ratio
c) Young’s modulus
d) Linear strain
Answer: d) Linear strain
Hooke’s Law is applicable to which type of material behavior?
a) Brittle
b) Plastic
c) Non-linear
d) Elastic
Answer: d) Elastic
The ratio of lateral strain to the longitudinal strain within the elastic limit is known as:
a) Modulus of elasticity
b) Poisson’s ratio
c) Bulk modulus
d) Shear modulus
Answer: b) Poisson’s ratio
The phenomenon of a material experiencing a decrease in volume under compression is called:
a) Tensile stress
b) Compressive stress
c) Poisson’s effect
d) Shear strain
Answer: c) Poisson’s effect
The maximum stress that a material can withstand without fracture is called:
a) Ultimate stress
b) Proportional limit
c) Yield stress
d) Breaking stress
Answer: a) Ultimate stress
The maximum stress a material can withstand without permanent deformation is called:
a) Ultimate stress
b) Proportional limit
c) Yield stress
d) Breaking stress
Answer: c) Yield stress
The internal resisting force per unit area developed within a material due to an applied load is called:
a) Strain
b) Stress
c) Deformation
d) Modulus of elasticity
Answer: b) Stress
The ratio of stress to strain within the elastic limit is known as:
a) Modulus of elasticity
b) Poisson’s ratio
c) Bulk modulus
d) Shear modulus
Answer: a) Modulus of elasticity
The region of a stress-strain curve where the material undergoes non-reversible deformation is known as the:
a) Elastic region
b) Plastic region
c) Yield point
d) Fracture point
Answer: b) Plastic region
The strain energy stored per unit volume in a material within the elastic limit is known as:
a) Resilience
b) Toughness
c) Modulus of elasticity
d) Strain energy density
Answer: d) Strain energy density
The maximum stress a material can withstand without any permanent deformation is called:
a) Ultimate stress
b) Yield stress
c) Breaking stress
d) Proportional limit
Answer: d) Proportional limit
The point on a stress-strain curve where the material starts to yield and undergo permanent deformation is called the:
a) Elastic limit
b) Proportional limit
c) Yield point
d) Breaking point
Answer: c) Yield point
The region of a stress-strain curve where the material undergoes reversible deformation is known as the:
a) Elastic region
b) Plastic region
c) Yield point
d) Fracture point
Answer: a) Elastic region
The ratio of lateral stress to longitudinal stress within the elastic limit is known as:
a) Poisson’s ratio
b) Young’s modulus
c) Bulk modulus
d) Shear modulus
Answer: a) Poisson’s ratio
The measure of a material’s ability to resist fracture when subjected to a sudden impact is known as:
a) Hardness
b) Toughness
c) Ductility
d) Resilience
Answer: d) Resilience
The ability of a material to withstand deformation under tensile stress without fracturing is known as:
a) Elasticity
b) Toughness
c) Ductility
d) Hardness
Answer: c) Ductility
The ratio of lateral strain to the longitudinal strain within the elastic limit is represented by the Greek letter:
a) ฮฑ
b) ฮฒ
c) ฮณ
d) ฮฝ
Answer: d) ฮฝ (nu)