POE - Mechanics

What does speed describe in terms of movement?

• How heavy an object is

• How far an object will travel over a period of time

• The color of an object

• The shape of an object

Which of the following is a unit of speed?

• Kilograms

• Liters

• Feet/Second

• Celsius

Which of the following is a unit of force?

• Newton

• Joule

• Watt

• Pascal

Which component is more likely to be used for quiet operations?

• Gears/Sprockets

• Pulleys

• Chains

• Belts

What happens to speed when a driving gear is smaller than the driven gear? (Draw yourself a picture)

• Speed increases

• Speed decreases

• Speed remains the same

• Speed doubles

What is the relationship between gear size and speed in a gear system?

• Larger gear increases speed

• Depends on the gear size ratio of the driven and driving gears.

• Gear size does not affect speed

• Both gears increase speed

What happens to torque when a driving gear is smaller than the driven gear? (Draw yourself a picture)

• Torque increases

• Torque decreases

• Torque remains the same

• Torque halves

What is the effect on speed and torque when the driving gear and driven gear are the same size? (Draw yourself a picture)

• Speed increases, torque decreases

• Speed decreases, torque increases

• No change in speed or torque

• Both speed and torque decrease

In a 3:1 ratio, how many full rotations does the driven gear make, if the driving gear rotates one full rotation?

• 3

• 1.5

• 2

• 1/3

In which gear system does the gear move along a linear path?

• Bevel

• Rack and Pinion

• Spur

• Planetary