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WorksheetsPLTW POE EoC Review Part 2
Total questions: 20
Worksheet time: 15mins
Energy resources that have an unlimited quantity are...
Renewable
Non-Renewable
Unreliable
Inexhaustible
What is the Modulus of Toughness?
The measure of a material's ability to plastically deform without breaking.
Unrecoverable elongation will not return to original shape
Recoverable elongation, will return to original shape
The ratio of the increment of some stress to some strain, the ability of a material to resist
stretching.
What is the Elastic Region?
The measure of a material's ability to plastically deform without breaking.
Unrecoverable elongation will not return to original shape
Recoverable elongation, will return to original shape
The ratio of the increment of some stress to some strain, the ability of a material to resist
stretching.
This is a structure that can be mathematically solved.
Static Determinate
Static Equilibrium
Static Indeterminate
Moment of inertia is a diagram used to isolate a body from its environment showing all external forces acting on it.
True
False, it is a property of a cross section that is concerned with a surface area and how the area is distributed
about a centroidal axis.
What is the Modulus of Elasticity?
The measure of a material's ability to plastically deform without breaking.
Unrecoverable elongation will not return to original shape
Recoverable elongation, will return to original shape
The ratio of the increment of some stress to some strain, the ability of a material to resist
stretching.
A parallel circuit only has one path for energy to flow.
True
False
What is the Plastic Region?
The measure of a material's ability to plastically deform without breaking.
Unrecoverable elongation will not return to original shape
Recoverable elongation, will return to original shape
The ratio of the increment of some stress to some strain, the ability of a material to resist
stretching.
efficiency =
De/Dr
AMA/IMA
AMA/IMA(100)
Fr/Fe
Static equilibrium occurs in a truss system when...
The product of the moments is equal to zero.
The sum of the moments is equal to
zero.
When everything equals zero.
An electrical motor is the same as a generator.
True
False; generators turn mechanical energy into electric energy while electric motors electric energy into mechanical energy.
This is a condition where there are no net external forces acting upon a body, remains at rest or at a
constant velocity.
Static Determinate
Static Equilibrium
Static Indeterminate
This is a structure that is over constrained so that there are more unknown supports than equations.
Static Determinate
Static Equilibrium
Static Indeterminate
A series circuit only has one path for current to flow.
False
True
What are three machines that use alternative energy systems?
Coal, fossil fuels, and natural gas
Wind turbines, solar cells, and hydrogen fuel cells
Only wind turbines and solar cells
None of these
This is a process that adds material to change the shape, size, or surface of a part.
Additive
Multiplicative
Subtractive
Forming
What is the formula for voltage and what is it measured in?
V = IR; measured in Volts
I = V/R; measured in Amperes
R = V/I; measured in Ohms
What is the formula for resistance and what is it measured in?
V = IR; measured in Volts
I = V/R; measured in Amperes
R = V/I; measured in Ohms
What is a centroid?
The circumference.
The middle of something?
The geometric center of an area.
What is the difference between digital and analog systems?
False
Analog is continuous and changes smoothly while digital stops abruptly and changes suddenly.
Digital is continuous and changes smoothly while analog stops abruptly and changes suddenly.
They are the same
