EES - Gear Trains

which is the driven or follower gear?

• A

• B

Answer explanation

Always look for the crank or motor to find the drive gear.

Which direction will the follower in a meshed gear train turn if the driver is turning to the right

• to the left

• To the right

• they won't turn

• They need a chain

What is the formula for gear ratio

• output over input

• input over output

• follower over driven

• output over follower

If your input gear is 36 and your output gear is 60, what is the gear ratio?

• 5/3

• 3/5

• 60/1

• 36/1

Answer explanation

driven over drive = 60/36 or 5/3

Find the gear ratio of the given simple gear train?

• 5:1

• 1:2

• 1:5

• 2:1

In this gear train, the middle gear is considered an _______ gear

• Idler
• Input
• Output

The input gear has 6 teeth.

The output gear has 48 teeth. The gear ratio is...

• 1:8

• 8:1

• 6:4

What happens to speed
when you torque is high?

• Speed Increases
• Speed decreases
• Speed stays the same

The purpose of the IDLER GEAR is to ____________.

• change the speed of rotation
• make the model harder to build
• add more gears for fun
• change the direction of rotation

To INCREASE speed of rotation, you can ____________________.

• add more gears
• change output gear from a LARGE gear to a SMALL gear

• turn the handle less times
• change output gear from a SMALL gear to a LARGE gear