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- 1. Multiple Choice
Making a _________________change is one of the easiest ways to change mechanical advantage in a mechanism or system to achieve the desired speed and/or torque.
gear teeth
Gear Ratio
drastic
position
- 2. Multiple Choice
What do we call the gear connected to the input power source, such as a motor?
Driven Gear
Bigger Gear
Smaller Gear
Driving Gear
- 3. Multiple Choice
What do we call the gear connected to the output, such as a wheel or mechanism in a system?
Driving Gear
Driven Gear
Bigger Gear
Smaller Gear
- 4. Multiple Choice
When you have a system with a driving gear that is _______ than the driven gear you will increase torque and decrease speed.
smaller
bigger
same size
thicker
- 5. Multiple Choice
When you have a system with a driving gear that is LARGER than the driven gear you will ___________________
decrease Speed and decrease Torque
increase Speed and increase Torque
increase Speed and decrease Torque
decrease Speed and increase Torque
- 6. Multiple Choice
Gear reduction is seen as a fraction that is often reduced to simplify the expression. Gear reduction: 40 / 12 gets reduced to
20/6
80/24
10 / 3
30/9
- 7. Multiple Choice
_________have NO EFFECT on Gear Ratio or Gear Reduction, regardless of the number of teeth they have.
Idling Gears
Idler Gears
Driven Gears
Driving Gears
- 8. Multiple Choice
All gears in between the driving gear and the driven gear that only transmit power are known as ______
Idler Gears
Trained Gears
Driven Gears
Driving Gears
- 9. Multiple Choice
Compound Gear Reduction and is calculated by _________the gear reductions of each of the individual gear pairs.
multiplying
dividing
adding
subtracting
- 10. Multiple Choice
In a bicycle the biggest gear is the
Driven gear
Driving gear
Where the pedal is
Where the driven wheel is
- 11. Multiple Choice
To optimize the performance of our kinetic cars the driven wheels should be connected with the _________ gears
thickest
thinnest
biggest
smallest
- 12. Multiple Choice
To optimize the performance of our kinetic cars the driving gear is where the elastic band gets wound up and it needs to be _____________ than the driven gear.
smaller
bigger
thinner
thicker
- 13. Multiple Choice
True or False:
A gear ratio is the ratio of the number of rotations of a driver gear to the number of rotations of a driven gear.
True
False
- 14. Multiple Choice
The __________ Gear causes motion
Driven
Driving
Smallest
Biggest
- 15. Multiple Choice
The idler gear allows the driven and driving gears to rotate in the same _______
speed
way
direction
momentum
- 16. Multiple Choice
The rpm of the bigger gear is always ______ than the rpm of the smaller gear.
slower
faster
more
less
- 17. Multiple Choice
Gears locked together on the same shaft will always turn in the same _______ and at the same rpm.
speed
torque
direction
momentum
- 18. Multiple Choice
What is the gear ratio with a driving gear with 40 teeth and a driven gear with 8 teeth?
5
1/5
5/8
8/5
- 19. Multiple Choice
What is the Gear Ratio of a driven gear with 8 teeth and a driving gear with 32 teeth?
4
1/4
0.4
0.25
- 20. Multiple Choice
When you have a system with a driving gear that is LARGER than the driven gear you will increase Speed and decrease _____
speed
ratio
Momentum
Torque
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