Engineering Material Properties Quiz #2

Why is it important for engineers to know the ultimate tensile strength of a material?

• To determine the color of the material.

• To avoid failure when the applied load is removed.

• To calculate the electrical resistance.

• To measure the thermal conductivity.

What does shear modulus (G) describe?

• The tendency of an object to resist twisting.

• The temperature at which a material melts.

• The pressure at which a material explodes.

• The point where a material becomes magnetic.

What does a small shear modulus indicate about a material?

• The material is very dense.

• The material is soft or flexible.

• The material is highly conductive.

• The material is very brittle.

What is the unit of density in the SI system?

• kg/m²

• kg/m³

• N/m²

• N/m³

What does a high ultimate tensile strength indicate about a material?

• It is more likely to break.

• It resists being pulled.

• It is more likely to melt.

• It is more likely to conduct electricity.

What does a high shear modulus indicate about a material?

• The material is very flexible.

• The material is very rigid.

• The material is highly conductive.

• The material is very brittle.

What does ductility measure in a material?

• The ability to conduct electricity

• The ability to tolerate stretching without breaking

• The ability to resist impact energy

• The ability to resist deformation

Why is increasing the strength of a material important?

• To improve electrical conductivity

• To ensure it remains plastic and not brittle

• To enhance thermal insulation

• To increase its weight

What does hardness measure in a material?

• The ability to conduct electricity

• The ability to resist various forms of deformation

• The ability to tolerate impact energy

• The ability to stretch without breaking

What does electrical resistivity measure?

• How well a material conducts electricity

• How well a material resists conducting an electric current

• How well a material tolerates impact energy

• How well a material stretches without breaking