Gear Ratio Calculations

When a gear system increases the speed of the driven gear, what must happen to the value of torque for that system?

• increases
• decreases
• stays constant

When a gear system decreases the speed of the driven gear, what must happen to the value of torque for the driven gear?

• increases
• decreases
• stays constant

When a gear system keeps the speed constant between the driver and driven gears, what must happens to the value of torque?

• increases
• decreases
• stays constant

When a input gear is larger than a output gear you have.....

• Increased Speed

• Increased Torque

When gears are equal in size, what is the gear ratio?

• 1:2
• 1:3
• 2:5
• 1:1

When a multiple gear bike goes up a hill, what should happens to the speed and torque if the gear system is used corretly?

• Speed decreases; torques increases
• Speed decreases; torques decreases
• Speed increases; torques decreases
• Speed increases; torques increases

When on a multiple gear bike is going down a hill, what should happens to the speed and torque?

• Speed decreases; torques increases
• Speed decreases; torques decreases
• Speed increases; torques decreases
• Speed increases; torques increases

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 output, such as a wheel or mechanism in a system?

• Driving Gear

• Driven Gear

• Bigger Gear

• Smaller Gear

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