Font size
WorksheetsGear Review
Total questions: 25
Worksheet time: 2hrs 9mins
Which component first generates the turning motion?
The Wires
The Motor
The Fan Blades
The Axle
What is the mechanical advantage of this gear ratio?
Power/Torque Advantage
Speed/rpm Advantage
no Mechanical Advantage
A 12 Tooth input gear (connected to the motor) is connected to a 36 tooth Output gear. What is the gear ratio and mechanical advantage?
3: 1 Power/Torque Advantage
3: 1 Speed/rpm Advantage
no Mechanical Advantage
When speed increases, what happens to the value of Power/torque?
What is the function of the smaller or "idle" gear?
Makes the output gear turn slower
Makes the output gear turn faster
Makes the larger gears turn in opposite directions.
Makes the larger gears turn in the same direction.
What's the ratio?
1:1
84 : 60
60 : 36
# of teeth output gear = 30
# of teeth input gear = 60
What is the gear ratio (in lowest terms)?
1 : 2
30 : 60
2 : 1
60 : 30
# of teeth input gear = 25
# of teeth output gear = 75
What is the gear ratio (in lowest terms)?
3 : 1
1 : 3
25 : 75
75 : 25
# of teeth input gear = 20
# of teeth output gear = 80
What is the gear ratio (in lowest terms)?
80 : 20
1 : 4
4 : 1
20 : 80
If the pink gear is the input gear and the blue gear is the output gear, what will happen with speed and power/torque?
increase speed, decrease power/torque
decrease speed, increase power/torque
speed & power/torque remain constant
No mechanical advantage
When speed increases, what happens to the value of power/torque?
No mechanical advantage
Making a _________________change is one of the easiest ways to change mechanical advantage in a mechanism or system to achieve the desired speed or power/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
The __________ Gear causes motion
Driven
Driving
Smallest
Biggest
The rpm (revolutions per minute) or speed of the bigger gear is always ______ than the rpm/speed of the smaller gear.
slower
faster
more
equal
Gears locked together on the same shaft will always turn in the same _______ and at the same rpm.
speed
torque
direction
momentum
A robot makes work?
Harder
Easier
Complicated
Unsafe
# of teeth input gear = 25
# of teeth output gear = 75
What is the gear ratio (in lowest terms)?
3:1
2:1
3:4
gear tooth # = 12 and 36 and 60
Gears shown are 12T, 24T, 60T, 84T
24T, 12T, 60T, 84T gears shown.
Mechanical advantage for gears involves a tradeoff between:
Weight and Torque
Speed and Distance
Weight and Speed
Torque and Speed
The gears in this arrangement form a:
Sequential Variables
Gear Pack
Gear Train
Transmittal Interconnections
When a gear turns another gear that is the same size, they turn the___________, and in the ___________.
same amount, opposite direction
same amount, same direction
different amount, opposite direction
different amount, same direction
