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PLTW POE EOC Review
PLTW POE EOC Review
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PLTW POE EOC Test Review
Flashcards
39 cards
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1
What is zero Kelvin in Celsius?
32+273
-273
273-32
273
2
The volume of a gas varies inversely with the pressure exerted on it is known as _________ Law
Bernulli's
Charles's
Boyle's
Gay-Lussac's
3
What is Engineering?
Using math and science to solve practical problems
Making the client happy
Building simple machines to do tasks
None of the above
4
Mr. DePuy is running at 100 m/s for 1000 seconds. How far did he run?
100,000 meters
10,000 meters
1,000,000 meters
100 meters
5
What is the difference between Hydraulics and Pneumatics?
Hydraulics uses a gas and Pneumatics uses a liquid
Hydraulics -- inert gas; Pneumatics -- flammable liquid
Hydraulics uses a liquid and Pneumatics uses gas
Hydraulics -- inert gas; Pneumatics -- non-flammable liquid
6
What is the equation for
Work?
W=MA
W=IR
W=F/D
W=F*D
7
"For every action force, there is an equal and opposite reaction force" is _________. (Spencer)
F=MA
Newton’s Second Law of Motion
Newton’s First Law of Motion
Newton’s Third Law of Motion
8
What does the point on this curve represent?
Point of Resilience
Elastic Range
Yield Point
Rockwell Test Point
9
What does an idler gear do?
Increase the rpm of another gear
Changes the gear ratio
Decrease the rpm of another gear
Allows driver and driven gears to rotate in same direction
10
All the following is true about Second Class Levers EXCEPT __________.
Always has a mechanical advantage
Always has a mechanical advantage <1
Resistance force is between the fulcrum and the effort.
Resistance force and effort force are in opposing directions
11
What is the equation to see if a truss is statically determinate?
2R = J+R
2M = J+R
2J = M+R
2J = M+Q
12
Which is NOT true of touch sensors? (Cadi)
All are true
A brief wait command can reduce the bounce effect
When pressed, its value may bounce between 0 and 1 briefly
Pressed = 1 and Released = 0
13
What is the probability of tossing a coin three times and it landing heads up exactly twice?
37.5%
50%
25%
12.5%
14
What simple machine is this?
Screw
Incline plane
Wedge
Lever
15
What machine is used to perform a tensile test?
Uniaxial
Uniform cross section
Cat Hair
Dog Bone
16
How many engineering disciplines does the United States government keep statistics on?
9
17
All of them
4
17
What is the difference between
Hydraulics
and
Pneumatics?
Hydraulics – Not Precise
Hydraulics – Easily Compressible
Hydraulics – Require Lubrication
Hydraulics – Incompressible
18
How do you find the vertical component of a vector?
Divide the magnitude of the vector by the cos of the angle
Divide the magnitude of the vector by the sin of the angle
Multiply the magnitude of the vector by the cos of the angle
Multiply the magnitude of the vector by the sin of the angle
19
How do you go from Celsius to Kelvin?
Subtract 273
Multiply by 9/5 and add 32
Add 32 and divide by 5/9
Add 273
20
How do you find the centroid of symmetrical three dimensional object
find the meeting point between 2/3 the base 2/3 the height
find the meeting points of the lines of symmetry
divide it into simpler shapes
find the meeting point between 1/3 base and 1/3 height
21
In a closed system, if the temperature of a gas decreases, which of the following COULD happen?
Pressure decreases and volume decreases
All of these
Pressure increases and volume decreases
Pressure decreases and volume increases
22
What is power measured in?
Volts
Joules
Watts
Newton-meters
23
What happens when a molecule goes through Reduction?
It loses an electron
It gains a proton
It loses a proton
It gains an electron
24
Which option correctly describes Bernoulli’s Principle of Conservation of Energy?
An increase in velocity results in an increase in pressure
Decreased velocity results in the pressure being squared
Increased velocity results in a decrease in pressure
Increased velocity results in an increase in pressure
25
If a Line Segment is Positive (+) it is in……
Convulsion
Compression
Tension
Expansion
26
A meter measures the flow rate at 15 gpm in a 2in line. What is the flow velocity? (Justin)
367
1100
302
110
27
How do you calculate the moment of an object?
M = PF
M = Fd
M = Qw
M=IR
28
What is a schematic representation of an algorithm or a process?
Tree Diagram
Timeline
Graph
Flowchart
29
What is the correct energy conversion sequence for Fossil Fuels?
Heat – Electrical – Chemical – Mechanical
Mechanical – Heat – Electrical – Chemical
Electrical – Chemical – Heat – Mechanical
Chemical – Heat – Mechanical – Electrical
30
What is used to make notes in code for the human programmers?
Notes
Inserts
Bullet Points
Comments
31
________ allow(s) a section of code to be repeated as long as a certain condition remains true.
Boolean logic
Moment
A While loop
If statements
32
The removed part of a complex shape using the subtractive method to find the centeroid is ____?
the removed area
removed space
negative area
negative space
33
What is Resilience?
Energy per unit volume a material can absorb while elastic.
Test Sample elongation
The amount of stretch per unit length.
A measure of stiffness.
34
This force is a measure of the tendency to rotate the body upon which it acts.
inertia
distance
moment
pivot
35
Which of the following is NOT an example of a Fuel cell?
Wood
Molten carbonate
Phosphoric acid
Alkaline
36
What symbol is used to represent a change in enthalpy?
Delta T
Delta S
Delta E
Delta H
37
Which equation correctly describes Charles’ Law?
V1P1=V2P2
V1/T1=V2/T2
V1T1=V2T2
P1/T1=P2/T2
38
What is the stress of a beam with a cross sectional area of 4 and a force of 10N?
2.5
5
.4
.625
39
What is the equation for moment?
Force/ Distance
2 x Distance / Force
Distance x Force
Distance / Force
