CFA - Robotics Final Exam
2/11/14, 10:30 AM
Robotics Final Exam
- Version 2
1. If you keep your work areas neat and organized you will save time.
a. True
b. False
2. Wear eye protection when there is a danger to your eyes
a. True
b. False
3. Knowing the proper actions during a disaster drill, code red drill and fire drill may save your life
a. True
b. False
4. Testing a robot on a counter or table without a test stand may result in it falling off the table and becoming
damaged.
a. True
b. False
5.
If it takes a lot of force to assemble or disassemble your robot, you are doing something wrong.
a. True
b. False
6. It is not necessary to power down and disconnect the battery when making changes to the robot.
a. True
b. False
7. Picking up electrical parts by the wires may cause the wires to break off.
a. True
b. False
8. You can get cut many times by touching a spinning or rotating tool or gear.
a. True
b. False
9. What are the benefits of learning Autodesk Inventor?
a. You will have the ability to design and manufacture products
b. You will have a skill that sets you apart from others
c. You will have developed the ability to follow technical instructions
d. All of these answers are correct
10. Why would you use Autodesk Inventor or a CAD (Computer Aided Design) program?
a. It helps you visualize your design
b. Helps you test your idea.
c. Saves money by allowing you to do preliminary testing before building.
d. Allows you to create a parts/material list for your product
e. All of the above
11. When
a.
b.
c.
d.
should you save your project?
When the bell rings
At the end of the project
In the beginning and often
It is not necessary to save a project
12. When
a.
b.
c.
d.
you use the extrude command, what happens to the part or drawing?
You shift the feature from 2D to 3D
The object rotates
The texture of the object changes
You shift the feature from 3D to 2D
13. The purpose of an inventory is
a. Detect Theft
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b. Determine if more parts are needed for the build
c. Become familiar with the parts used in the build
d. All of the above
14. Which
a.
b.
c.
d.
of the following is true about using fasteners?
Always use the correct tool to tighten and loosen.
There is really no difference between a screw and a bolt
Washers are only available in steel
A walnut is used to hold shelves against a wall
15. Following technical directions exactly will minimize frustration
a. True
b. False
16. .iam
a.
b.
c.
d.
is the extension used for which type of file?
Part
Assembly
Drawing
Presentation
17. .dwg is the extension used for which type of file?
a. Part
b. Assembly
c. Drawing
d. Presentation
18. The amount of force holding two surfaces together is called
a. friction
b. kinetic friction
c. normal force
d. static friction
19. What
a.
b.
c.
d.
will happen if the torque from a motor is greater than the traction on a wheel?
the wheel will begin to slip on the ground
the wheel will maintain contact with the ground and push the robot forward
the object will begin to move and kinetic friction will be acting on it
the object will begin to move and static friction will be acting upon
20. .ipt is
a.
b.
c.
d.
the extension used to which type of file?
Part
Assembly
Drawing
Presentation
21. A robotic system that carries out programs or performs tasks without outside control by acquiring,
processing, and acting on environmental information is called
a. a prototype
b. autonomous
c. tele-operated
d. a design
22. Which
a.
b.
c.
d.
of the following robot parts would NOT be considered part of its drivetrain? (1.25 points)
axels
motors
frequency crystals
wheels
23. What is
a.
b.
c.
d.
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the general trend with gear ratios when the driving gear is smaller than the driven gear?
The speed will increase but the torque stays the same.
The torque will increase but the speed decreases.
The speed will increase but the torque decreases.
Both the speed and the torque remain the same.
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24. The actual fabrication and assembly of a product is called the (1.25 points)
a. research
b. test
c. design
d. build
25. The frictional force that opposes the motion of an object before it starts moving is called
a. traction
b. kinetic friction
c. static friction
d. normal force
26. A full-scale working model of a product is called a
a. robot
b. prototype
c. control system
d. build
27. A change in speed over time is called
a. force
b. power
c. acceleration
d. torque
28. Putting a product through actual usage conditions to discover problems with the design is called (1.25
points)
a. research
b. testing
c. designing
d. building
29. Which
a.
b.
c.
of the following is a TRUE statement?
Static friction affects a stationary robot and prevents its movement.
Kinetic friction affects a stationary robot and prevents its movement.
Static friction only affects rotating movement, while kinetic friction only affects the
traction of the wheels on the ground.
d. There is no difference between static and kinetic friction.
30. What is the normal force of an object?
a. The force that slows down rotating components in your robot.
b. The force that presses two sliding objects together, counteracting the effect of gravity.
c. The force that prevents an object from moving and must be overcome to get the object moving.
d. The force between two surfaces that “grip” as they slide past each other
31. Which
a.
b.
c.
d.
of the following is NOT a common use of robots today?
medical procedures
managing people
NASA space exploration
industry assembly
32. The relationship between the number of teeth on two gears that are meshed together is called the
a. direct current
b. gear ratio
c. force
d. acceleration
33. If you
would
a.
b.
c.
d.
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were able
lie?
center of
center of
center of
center of
to represent all of the robot’s mass into a single point, it is the position where what point
friction
mass
gravity
force
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34. What is the general trend with gear ratios when the driving gear is larger than the driven gear?
a. The torque will increase but the speed decreases.
b. Both the speed and the torque remain the same.
c. The speed will increase but the torque stays the same.
d. The speed will increase but the torque decreases.
35. Which
a.
b.
c.
d.
of the following is NOT a purpose or advantage of using a robot in industry?
Can perform tasks that might be impossible for humans (stronger, taller, etc)
More precise than humans
Can do repetitive work with no loss of efficiency
Low cost of designing and building a rob
36. Which
a.
b.
c.
d.
of the following affect(s) the behavior of the robot?
sensors
transmitter
program on the microcontroller
all of the above
37. A part
a.
b.
c.
d.
or subassembly placed into another assembly is called a
paradigm
component
control system
robot
38. What is the general trend with gear ratios when the driving gear and the driven gear are the same size?
a. The speed will increase but the torque stays the same.
b. The torque will increase but the speed decreases.
c. The speed will increase but the torque decreases.
d. Both the speed and the torque remain the same.
39. A common way to measure how fast a wheel is turning is
a. miles per hour
b. feet per second
c. newtons
d. revolutions per minute
40. Which
a.
b.
c.
d.
of the following gears is commonly used on bicycles?
chain and sprocket
bevel gear
rack and pinion
worm gear
41. Which of the following describes IN ORDER the robotic/engineering design process as discussed in class?
a. Identify a need, define the problem, gather information, brainstorm, analyze and test prototype,
build final product
b. Gather information, define the problem, identify a need, brainstorm, build final
product, analyze and test prototype
c.
Brainstorm, Identify a need, define the problem, gather information, build final
product, analyze and test prototype
d. Define the problem, gather information, identify a need, brainstorm, analyze
and test prototype, build final product
42. If you
a.
b.
c.
d.
give the robot the command Wait(4000), how long will the robot wait?
4000 seconds
2000 seconds
4 seconds
2 seconds
43. What effects do gears have upon mechanical devices?
a. They change the direction through which power is transmitted.
b. They change the amount of force or torque.
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c. They change the speed of rotation
d. All of the above
44. When
a.
b.
c.
d.
writing a program to turn on a motor on a robot, the value used to stop the motor is
0
200
255
127
45. Something that tells a robot how to act in different circumstances, and the electronics that process the
information is called the
a. build
b. design
c. research
d. control system
46. A programmable, mechanical device that can perform tasks and interact with its environment is called a
a. prototype
b. robot
c. control system
d. paradigm
47. If your robot was too top heavy and kept tipping forward when trying to complete its task (like the
protobot sometimes was), how could you fix the problem?
a. kick it until it did what you wanted it to do
b. add more weight to the middle of it
c. add more weight to the back of it
d. add more weight to the front of it
48. Any various tooth like projections arranged on a wheel rim to engage the links of a chain is called a
a. spur gear
b. idler gear
c. gear
d. sprocket
49. The pattern on the surface of a tire is
a. tread
b. traction
c. friction
d. differential
50. The term used to describe the "grippyness" of two surfaces meshing together is
a. friction
b. coefficient of friction
c. kinetic friction
d. static friction
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