Mechanical Advantage Review

Which component first generates the turning motion?

• The Wires

• The Motor

• The Fan Blades

• The Axle

Which components are part of the "transmission"?

• The Wires

• The Motor

• The Fan Blades

• The Axle

The role of the VEX Brain is to provide power to the motors.

• True

• False

Mechanical advantage for gears involves a tradeoff between:

• Weight and Torque

• Speed and Distance

• Weight and Speed

• Torque and Speed

If you wanted a fan that would spin as fast as possible, which of the following gear configurations is theoretically best?

• All large gears to cover more distance

• Different gear combinations, including really large and small gears

• All small gears to spin faster

• No gears: It should be direct driven

A system with a mechanical advantage of 1:5 is:

• 5 times faster, but 1/5 as forceful

• 5 times slower, but 1/5 as forceful

• 1/5 as faster, but 5 times more forceful

How many turns does the small gear (16 teeth) need to make in order to keep up with one turn the large gear (60 teeth)?

• 1 Turn

• 1.5 Turn

• 5 Turns

• 2 Turns

Compared to a same-size gear train, how many times faster will the fan spin with a 36-tooth gear on the motor driving a 12-tooth gear on the hub?

• 0 times faster. The speed of the fan doesn't change.

• 3 times faster. The gear on the motor is 3 times larger than the gear on the hub.

• 6 times faster. The gear on the motor is 6 times larger than the gear on the hub.

• The fan will actually spin 3 times slower because of the gear difference.

The gears in this arrangement form a:

• Sequential Variables

• Gear Pack

• Gear Train

• Transmittal Interconnections

The "transmission" system in the fan includes:

• Axles, Basedrums

• Gears, Axles

• Hubs, Brain

• Brain, Gears