Strength of Materials Quiz

What is stress in a material?

• The measure of what the material feels from externally applied forces

• The deformation of a material from stress

• The ratio of the change in length to the original length

• The force per unit area acting on the material in an outward normal direction

What is strain in a material?

• The ratio of the change in length to the original length

• The deformation of a material from stress

• The force per unit area acting on the material in an outward normal direction

• The measure of what the material feels from externally applied forces

What is the maximum tensile stress that a material can withstand before breaking called?

• Shearing stress

• Compressive stress

• Tensile strength

• Tensile stress

What is the ratio of lateral strain to longitudinal strain called?

• Modulus of rigidity

• Bulk Modulus

• Poisson's ratio

• Young's Modulus of elasticity

What is the ability of a material to return to its previous shape after stress is released called?

• Brittleness

• Elasticity

• Plasticity

• Ductility

What is the maximum stress a material can withstand before permanent deformation called?

• Elastic limit

• Yield point

• Ultimate stress

• Proportional limit

What law states that the strain of the material is proportional to the applied stress within the elastic limit?

• Archimedes' Principle

• Hooke's Law

• Ohm's Law

• Newton's Law

What is the ratio of ultimate stress to the working stress called?

• Stress ratio

• Factor of safety

• Safety ratio

• Load factor

What is the elastic constant that measures a deformable body's rigidity called?

• Poisson's ratio

• Modulus of rigidity

• Bulk Modulus

• Young's Modulus of elasticity

What is the stress produced by any change in the temperature of the material called?

• Temperature stress

• Cold stress

• Heat stress

• Thermal stress