Quiz on Stress and Strain

What is stress measured in?

• Pascals

• Newtons

• Joules

• Watts

Which of the following defines strain?

• Force per unit area

• Change in length per original length

• Energy per unit volume

• Mass per unit volume

What is the relationship between stress and strain in the elastic region called?

• Hooke’s Law

• Newton’s Law

• Pascal’s Principle

• Archimedes' Principle

Which type of stress occurs when forces act perpendicular to the surface?

• Shear stress

• Tensile stress

• Compressive stress

• Torsional stress

What is the unit of strain?

• No unit

• Newton

• Pascal

• Joule

What is Young's Modulus a measure of?

• Elasticity

• Plasticity

• Density

• Viscosity

Which material property indicates how much a material can be stretched before it breaks?

• Toughness

• Hardness

• Ductility

What type of deformation is permanent and does not return to its original shape?

• Elastic deformation

• Plastic deformation

• Shear deformation

• Tensile deformation

In a stress-strain curve, what does the area under the curve represent?

• Elastic limit

• Yield strength

• Ductility

• Toughness

Which point on the stress-strain curve indicates the end of elastic behaviour and the beginning of plastic behaviour?

• Ultimate strength

• Fracture point

• Yield point

• Elastic limit