Unit I-Selection of materials part I

Engineering materials are used to:

• Design and manufacture products

• Generate electrical energy

• Control chemical reactions

• Measure temperature

Which of the following is a primary category of engineering materials?

• Liquids

• Metals

• Gases

• Plasmas

Engineering materials are selected based on their:

• Color and texture

• Mechanical, physical, and chemical properties

• Size and shape

• Electrical conductivity only

Ferrous materials primarily contain:

• Aluminum

• Iron

• Copper

• Magnesium

An example of a ferrous material is:

• Brass

• Steel

• Aluminum

• Bronze

Non-ferrous materials are characterized by:

• High iron content

• Absence or low iron content

• High carbon content

• High density

An example of a non-ferrous material is:

• Cast iron

• Copper

• Stainless steel

• Wrought iron

Material selection is the process of:

• Choosing the cheapest material

• Selecting a material based on performance and requirements

• Using only ferrous materials

• Avoiding non-ferrous materials

The goal of material selection is to ensure:

• Maximum cost

• Optimal performance, cost, and durability

• Minimum weight only

• High electrical conductivity

Which of the following is a key factor in material selection?

• Material color

• Mechanical properties like strength and toughness

• Material smell

• Material transparency