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Questions and Answers
What is the main reason why metals are important in engineering?
What is the main reason why metals are important in engineering?
- High stiffness and strength (correct)
- High thermal conductivity
- Low cost compared to other materials
- Good electrical conductivity
Which classification includes metals based on iron?
Which classification includes metals based on iron?
- Nonferrous metals
- Superalloys
- Ferrous metals (correct)
- Cast irons
What property makes metals better than other materials in absorbing energy?
What property makes metals better than other materials in absorbing energy?
- High thermal conductivity
- High electrical conductivity
- Low cost
- Toughness (correct)
Which metal is classified as nonferrous?
Which metal is classified as nonferrous?
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What property makes metals good conductors of heat?
What property makes metals good conductors of heat?
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Study Notes
Importance of Metals in Engineering
- Metals are essential in engineering due to their unique combination of properties, such as strength, durability, and conductivity, which make them suitable for a wide range of applications.
Classification of Metals
- Metals are classified as ferrous or nonferrous based on their iron content.
- Ferrous metals contain iron, while nonferrous metals do not.
Energy Absorption Property
- Metals are better than other materials in absorbing energy due to their high ductility, which allows them to deform without breaking.
Nonferrous Metal Example
- Copper is a nonferrous metal, as it does not contain iron.
Thermal Conductivity Property
- Metals are good conductors of heat due to their high thermal conductivity, which is the ability of a material to transfer heat efficiently.
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