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Gears and Torque Test
By Terri Henry
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PLTW mechanisms test for automation and robotics.
Question 1
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Question 2
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Question 3
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Question 4
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Question 5
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Question 6
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Question 7
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Question 8
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Question 9
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Question 10
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Question 11
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Question 12
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Question 13
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Question 14
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Question 15
15.
What is the gear ratio for the gear pictured. Do NOT Reduce. Use : to seperate the two numbers.
Question 16
16.
What is the gear ratio (smallest numbers) for the gear pictured.
Question 17
17.
Question 18
18.
Question 19
19.
What type of gear is being used in this picture?
Question 20
20.
What type of gear does this picture represent?
Question 21
21.
What type of gear is pictured here?
Question 22
22.
What type of gear is represented in the picture?
Question 23
23.
Question 24
24.
Question 25
25.
Question 26
26.
Question 27
27.
Question 28
28.
Question 29
29.
Question 30
30.
Question 31
31.
What is the gear ratio for this gear if A is the Driven gear? DO NOT REDUCE.
Question 32
32.
Question 33
33.
Mechanisms are used to . . .
D All of the above
A Change the direction of movement
B Changes the type of movement
C Change the speed/torque of movement
Two meshed gears, like the picture, are connected to each other. What could be done to make the gears spin in the same direction?
A Add a crank and slider
D Change the gears to sprockets
C Add and idler gear in between red and blue gear
B Change the input and output gears
What is the type of output movement?
A Reciprocating
B Linear
D Rotary
C Oscillating
What are the four kinds of movement mechanisms can have?
A Rotary, Oscillating, Reciprocating, Linear
D Circular, Linear, Up, Down
B Up, Down, Left, Right
C Oscillating, Back and forth, Rotary, Circular
Use the picture to tell which gear would need to be the input for a higher torque gear ratio?
B The large gear
A The small gear
C You would need a motor
D You cannot increase the torque
Use the picture to tell which gear would need to be the input for a higher speed gear ratio?
A The large gear
C You would need a motor
D You cannot increase the speed
B The small gear
Is this gear ratio geared for torque or speed? Input gear 36 teeth, output gear 12 teeth
B Torque
A Speed
Is this gear ratio geared for torque or speed? Input gear 6 teeth, output gear 54 teeth
A Speed
B Torque
Which mechanisms change rotary motion to linear motion?
B Belt drive, cam and follower
D Leadscrew, crank and slider
C Rack and pinion, leadscrew
A Gear train, crank and slider
Which mechanisms change rotary motion to reciprocating motion?
C Crank and slider, cam and follower
D Rack and pinion, belt drive
A Gear train, crank and slider
B Worm wheel, crank and slider
Which mechanism can transfer power around a corner?
D Universal joint
B Chain drive
A Bevel gear
C Lead screw
Which type of mechanism can be found in an ice cream scoop?
C Rack and pinion
D Cam and follower
A Worm Wheel
B Bevel gear
Which of the following mechanisms can be used to increase torque?
B Worm and wheel
A Universal Joint
C Crank and Slider
D None of the above
If the input and output gears of a gear train are the same size then what is the gear ratio?
C 1:2
D There is not enough information to tell
B 1:1
A 2:1
In the gears pictured, what type of motion is being transferred?
A Rotary to linear
C Rotary to rotary
B Linear to rotary
D Rotary to oscillating
In the gears pictured what type of motion is being transfered?
C Rotary to linear
B Rotary to oscillating
A Rotary to rotary
D Linear to rotary
Name the gear that transits power and motion to the rest of the system.
B Output gear
C Gear ratio
A Driven gear
D Input gear
What does the idler gear do for the input and output gears?
C Allow the input and output gears to flow in opposite directions.
A It increase the flow of energy.
D The ideler gear does not have any effect on the input and output gears.
B Allow the input and output gears to flow in the same direction.
Which type of mechanism can be found in a print roller?
B Simple gear
C Lead screw
A Worm wheel
D Simple gear with idler
An increase in torque and a change in direction causes a decrease in speed. This is an example of
Gear change
Gear down
Gearing
Gear up
What is this part called?
Shafts
Sticks
Axels
Stabbing tools
What is the name of this piece?
Nylock
Bearing
Shaft Collar
KEPS Nut
What is this piece used for?
Transmitting force
Mounting a gear
Keeping a shaft from moving around
Spacing things out, so they don't rub together.
There is only ONE correct way to attach these - which one is it?
Rivets go through the metal, into the bottom of the bearing.
Rivets go through the metal, into the top of the bearing
Rivets go through the bottom of the bearing, into the metal
Rivets go through the top of the bearing into the metal.
What type of movement is being generated by the OUTPUT gear?
Linear
Recipicating
Rotary
Oscillation
What is the angle of the input shaft to the output shaft?
360 degrees
Perpendicular
180 degrees
Parallel