The purpose of homework in this course is to: - Answers✔Help you assess your understanding
and
Force you to keep up with lectures
Mechanical and nuclear engineering are generally considered to be this type of discipline: -
Answers✔Design engineering
Materials engineering is generally considered to be this type of discipline: - Answers✔Support
engineering
"Design" involves precisely defining: - Answers✔What we want to produce,
The conditions it will see in use,
What properties it must possess
The "design requirements" that must be considered for a product or component are: -
Answers✔Geometric requirements,
Manufacturing requirements,
Mechanical properties
Met 2110 will develop the relationships between: - Answers✔Structure and properties,
Properties and processing,
Properties and performance
These materials exhibit both good strength and good ductility (formability) - Answers✔Metals
These materials are generally hard and strong, but also brittle. - Answers✔Ceramics
These materials offer good electrical and thermal conductivity. - Answers✔Metals
These materials typically have the lowest strength, but are light weight. - Answers✔Polymers
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These materials can provide electrical & thermal insulation at high operating temperatures. -
Answers✔Ceramics
These materials would be the least suitable for use at elevated temperatures. -
Answers✔Polymers
In this type of bonding, the valence electrons are free to "wander" throughout the structure (high
conductivity). - Answers✔Metallic
This is the weakest of the four types of bonding. - Answers✔VanderWaals
Two different types of atoms (an electron donor and an electron receiver) are required in this
type of bonding. - Answers✔Ionic
The bonds between carbon-carbon and carbon-hydrogen (common within polymers) are of this
type. - Answers✔Covalent
Materials bonded by this type of bond can exhibit both high strength and high ductility. -
Answers✔Metallic
The restricted number of "neighbors" leads to directional bonding and low densities in this type
of bonding. - Answers✔Covalent
When a magnesium atom gives up two electrons to an oxygen atom, resulting in the formation of
MgO, the type of atomic bonding must be: - Answers✔Ionic
In this type of bonding, the bonding is between molecules, not between atoms. -
Answers✔VanderWaals
A collection of ordered points in space is called a ___ - Answers✔Lattice
The smallest volume of a lattice that retains all of its characteristics is called the: -
Answers✔Unit Cell
The number of immediately adjacent (i.e. touching) atoms to a given atom is called the: -
Answers✔Coordination number
The efficiency of filling available space (% occupied) can be evaluated by computing the: -
Answers✔Packing Factor
In any cubic lattice, corner atoms are shared by ___ unit cells. - Answers✔8
The fraction of a corner atom that lies within a given unit cell is: - Answers✔1/8
The number of atoms or lattice points fully-contained in a simple cubic unit cell is: - Answers✔1
The coordination number for the simple cubic arrangement is: - Answers✔6
2
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