Quiz 2
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Florida Gulf Coast University *
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Course
3002C
Subject
Mechanical Engineering
Date
Feb 20, 2024
Type
docx
Pages
4
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Question 1
1
/ 1
pts
Grade (G) is defined as the vertical rise per some specified horizontal distance in ft/ft (m/m).
True
False
Question 2
1
/ 1
pts
Roadway design is governed by vehicle capabilities acceleration/deceleration, but not human capabilities.
True
False
Question 3
1
/ 1
pts
Vehicle capabilities include acceleration/deceleration, braking, as well as, cornering.
True
False
Question 4
1
/ 1
pts
Based on class notes, roadway design is governed by (include all that apply):
No answer text provided.
Vehicle capabilities
No answer text provided.
Traffic control
Question 5
1
/ 1
pts
Performance of road vehicles forms the basis for roadway design guidelines such as: (include all of the following)
length of acceleration / deceleration lanes
maximum grades
stopping-sight distances
passing-sight distances
setting speed limits
timing of signalized intersections
True
False
Question 6
1
/ 1
pts
Tractive effort is simply the force available at the roadway surface to perform work (expressed in pound or Newton)
True
False
Question 7
1
/ 1
pts
Aerodynamic effort is a portion of a tractive effort. It is expressed in expressed in watts or horsepower.
True
False
Question 8
1
/ 1
pts
Major sources of vehicle resistance include aerodynamic, grade, but not rolling resistances.
True
False
Question 9
1
/ 1
pts
Aerodynamic resistance originates from a number of sources including turbulent flow of air around the vehicle body (≈ 3%), friction of air passing over vehicle body (≈ 12%), and air flow through vehicle components (≈ 85%).
True
False
Question 10
1
/ 1
pts
Aerodynamic resistance is refers to the resistance generated from a vehicle’s
internal mechanical friction, and pneumatic tires, and their interaction with the roadway surface.
True
False
Question 11
1
/ 1
pts
The unit for grade resistance is watts.
True
False
Question 12
1
/ 1
pts
The unit for tractive effort/resistance is newton.
True
False
Question 13
1
/ 1
pts
1 horsepower equals 550 watts
True
False
Your preview ends here
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Question 14
1
/ 1
pts
Rolling (Rrl) resistance is defined as weight of a vehicle (W) multiply by grade (G) (R
rl
= W * G)
True
False
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Two sport utility vehicles (SUVs) are being considered by a recent engineering graduate. Using the following data evaluate which sport utility vehicle is better. Use six attributes in your a
point, overall appearance, comfort, safety, reliability, and fuel mileage. Larger scores on overall appearance, comfort, safety, reliability, and fuel mileage are preferred to smaller ones.
Click the icon to view the table with data you have gathered about the SUVs.
Determine attribute weights and use the nondimensional scaling technique to find the resulting set of vehicle scores. Fill in the table below. (Round to two decimal places.)
More Info
Attribute
Price
Appearance
Comfort
Safety
Reliability
Fuel mileage
Relative
Rank
4
253 6
1
Print
Final score
Alternatives
SUV 1
$27,650
4
3
3
3
22 mpg
SUV 1
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Alternatives
SUV 2
$21,900
3
5
4
4
18 mpg
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Presented below are the quality ratings with regard to soil moisture availability.
Erosion rating
Moisture rating
Erosion
Rating
MC (%)
Rating
Slope
Slope rating
Rating
hazard class
Low
1
0-5
4
0-5
1
Moderate
2
5-15
3
5-10
2
High
3
15-20
2
10-25
3
Very high
4
>20
1
>25
4
Quality ratings of three land units are tabulated below.
Land quality rating
Land unit
Nutrient availability
Trafficability
1
2
1
2
3
1
3
2
2
Additional characteristics of the land units areas follows:
Land Permeability Land use M.C. Slope Clay V. Silt OM Structure
% % Fine % %
unit
sand
%
1
2
Slow
Moderate
Rangeland
Arable
10
9
40% 10
30 4
blocky
18
8
30% 20
20
2
Coarse
granular
3
Moderate to Settled
22
12
20% 15
50 3
Fine
rapid
granular
Suitability
Class
Nutrient
The suitability rating for land qualities for tomatoes and cabbage production is also
indicated below;
Suitability classes for Tomato production
Trafficability Moisture
Land Qualities
Slope
Erosion
availability
hazard
S1
1
2
2
2
2
S2
2
3
3
2
S3
3
4
3
3
4
S4…
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TRUE OR FALSE
1.) In rheology, food materials of higher viscosity have higher resistance to flow.
2.) Specific heat is the amount of heat needed to raise the temperature of a unit mass of an object one degree higher without change of phase
3.) Surface area, is related to size but also depends on particle shape.
4.) Size can be correlated with weight given that the material has more or less uniform composition.
5.) Latent heat of fusion is the amount of heat that must be removed to convert water to ice and is also the same as the amount of heat added to convert ice to water.
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Please give a complete solution in Handwritten format.
Strictly don't use chatgpt,I need correct answer.
Engineering dynamics
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Analysis and Interpretation of vertical Ground Reaction Forces. In this study, a volunteer was asked to walk on two force platforms under two different conditions. Condition 1- Normal Walk (NW), condition 2 - walking over an obstacle (OW). The right limb was the one to step on platform 1 in both conditions. The force platforms were used to measure the vertical ground reaction forces on the right limb. Data was collected on Vicon (Nexus) software and the attached graphs ( mean NW/OW, Mean (+-)1SD NW/OW) were created. Analyse and Interpret the graphs attached.
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TRUE OR FALSE Directions: Choose true is the statement is correct, otherwise choose false. 1. Literature is not related to a certain region’s culture, tradition, history and people.
2. All written, oral, and multimedia forms of work are considered literature.
3. Poetry commonly utilizes rhymes and figures of speech while prose uses formal sentence structures.
4. Drama is delivered on a theatrical stage with actors and actresses.
5. Fictional works have the same elements of non-fictional works.
6. Facts, information, and statistics are focused on non-fictional works.
7. Human history and advancements were possible without the role literature.
8. The standard of universality conveys that literature must be perpetual and timely. It is forever relevant and it appeals to one and all, anytime, and anywhere.
9. Intellectual beauty expresses that a literary piece must stimulate thought about life and human nature, while suggestiveness pertains to how it evokes emotion of the reader.
10. All…
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Question 7
The following formulas are commonly used by engineers to predict the lift and drag of an airfoil:
where L and Dare the lift and drag forces, V is the airspeed, S is the wing span, is the air density, and CL and CD are the lift and drag coefficients. Both CL and CD depend on α , the angle of attack, the angle between the relative air velocity and the airfoil’s chord line.
Wind tunnel experiments for a particular airfoil have resulted in the following formulas.
where α is in degrees.
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Don't Use Chat GPT Will Upvote
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Please Use excel Shee t
Note:-
• Do not provide handwritten solution. Maintain accuracy and quality in your answer. Take care of plagiarism.
• Answer completely.
• You will get up vote for sure.
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1. A new process for synthesizing methanol from methane is
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average conversion was 42% and the standard deviation
was 5%. If it can be concluded that the mean conversion
u is greater than 36%, further evaluation of the process
will be conducted.
a) Define H and H₁
0
b) Compute the test statistic
c) Find the P-value of the test statistic.
d) State the conclusion.
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Question 7
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It is rare to find a design problem that is purely one type of discipline (fluidic system, thermodynamic system, electrical system...etc)
Parametric Design involves finding values for the features that characterize the object being studied. Parametric design could be based on empirical model, mathematical model, or/and Numerical models.
True or False?
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1- Select the optimum choice for: high speed air craft skins material.
Table 1: The properties of metallic materials
E, GPa Max. use lemp, 'C | Density, Mg/cm' ay, MPa | Relative cost per
unit sheet area
Material
2.8
300
2
Aluminum alloy
200
69
200
7,8
350
350
700
Carbon steel
Stainless steel
193
7.8
650
6
8.9
600
6
Nickel alloy
Titanium alloy
207
1000
116
600
4.5
900
10
Table 2: Weighting factor
Specific yield strength:
Max, use temperature:
Youngs modulus:
4
2
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Using the Ashby chart below (also
given in class),
Strength - Max service temp.
Carbon Cost Low aloy Ti aloys
Ses irore soels
Stainless
sloels
CFRP
Ni alóys
Walloys
Mg aloys
Al alloye
Cu ellays
SiNa
1000
Metals
Zinc aloys
Nyors
PET
PUMA
AIN
100
GFR
ea glase
PVC -
ANS
PEEK
Soda gloss
Borosilicate glas
Technical
ceramics
pp poces
Neoprone
Louhey
10
Brick
Lead alloys
EVA
PTFE
Stone
lonomers
Wood
Polymers and
elastomers
Scone
elastomers
Non-technical
ceramics
Rgd palymer
foams
Coscrete
Buta rubber
Cork
Foams
01
Fexble polymer
foams
MEA 4
0.01
10
100
Maximum service temperature, Tmax (°C)
30
300
1000
what would be the most appropriate
choice for the bulk material used for a
turbine blade in a jet engine?
O Al203
Nickel alloys
Carbon fibre composite
O Kevlar
Strength, of (MPa)
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Say, you have a thermometer and you are checking the temperature of a body that has a temperature of 36o Using your thermometer five times, it gives you the following measurements: 29oC, 29.2oC, 29.3oC, 28.9oC, and 29.1oC. What can we conclude about the accuracy and the precision of the thermometer?Group of answer choices The thermometer is not accurate and not precise The thermometer is faulty. The thermometer is accurate and precise The thermometer is not accurate but precise.
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