Review

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

Tags

NGSS.MS-PS2-2

What do we call the gear connected to the input power source, such as a motor?

• Driven Gear

• Bigger Gear

• Smaller Gear

• Driving Gear

Tags

NGSS.MS-PS2-1

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

Tags

NGSS.MS-PS2-2

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

Tags

NGSS.MS-PS2-1

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