Unit 203_Mock Test

What is Plastic Material?

• Change their shape when under a load, but they remain permanently deformed when the load is removed.

• Change their shape when under a load, but they return to their original shape when the load is removed.

• Do not change

• Be plastically deformed by a comprehensive force

The Drill would need to have what property?

• Ductility

• Tensile Strength

• Hardness

• Malleability

When an object shatters when struck by a hammer, the property is called?

• Tensile strength

• Brittleness

• Hardness

• Malleability

For steel, which one of the following properties can be enhanced upon annealing?

• Strength

• Plasticity

• Elasticity

• Ductility

To keep food warm or cool, coolers are made out of materials that are

• Malleable

• non metal

• Insulators

• Conductive

Galvanizing is a process of

• Applying a Zinc coating to bare copper

• Applying a copper coating to bare Zinc

• Applying a Zinc coating to bare steel

• Applying a steel coating to bare iron

Iron rusts in the presence of:

• Iron

• Oxygen

• Moisture and Oxygen

• Moisture

The ability of a material to withstand a force without breaking or bending

• Ductility

• Strength

• Plastic

• Malleable

What is Thermal Expansion?

• An increase in a materials mass when temperature increases

• An increase in a materials volume when temperature increases

• An increase in a materials Area when temperature increases

• None of the above

Latent heat is?

• he heat absorbed at a constant temperature during a change of phase

• the heat absorbed at a constant temperature during a change of phase

• he heat absorbed or released at a constant temperature during a change of phase

• An increase in a materials volume when temperature increases