Quiz 2

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School

Florida Gulf Coast University *

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Course

3002C

Subject

Mechanical Engineering

Date

Feb 20, 2024

Type

docx

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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
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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