WorksheetsGears
Total questions: 20
Worksheet time: 10mins
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
What do we call the gear connected to the input power source, such as a motor?
Driven Gear
Bigger Gear
Smaller Gear
Driving Gear
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
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
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
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
_________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
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
Compound Gear Reduction and is calculated by _________the gear reductions of each of the individual gear pairs.
multiplying
dividing
adding
subtracting
In a bicycle the biggest gear is the
Driven gear
Driving gear
Where the pedal is
Where the driven wheel is
To optimize the performance of our kinetic cars the driven wheels should be connected with the _________ gears
thickest
thinnest
biggest
smallest
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
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
The __________ Gear causes motion
Driven
Driving
Smallest
Biggest
The idler gear allows the driven and driving gears to rotate in the same _______
speed
way
direction
momentum
The rpm of the bigger gear is always ______ than the rpm of the smaller gear.
slower
faster
more
less
Gears locked together on the same shaft will always turn in the same _______ and at the same rpm.
speed
torque
direction
momentum
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
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
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
