Principles of Applied Engineering Spring 2024 Final Review

Which of the following is an example of a second type lever?

• Wheelbarrow

• Bicycle wheel

• A flagpole

• a screwdriver

What is a first class lever?

• The fulcrum is in-between the effort and the load.

• The effort is in-between the load and the fulcrum

• The load is in-between the effort and the fulcrim

• none of the answers

A __________ class lever- the load is in-between the fulcrum and the effort.

• First

• Second

• Third

• Fourth

A __________ class lever- The effort is in-between the fulcrum and the load.

• FIrst

• Second

• Third

• Fourth

What is the main purpose of a single pulley?

• To increase friction between moving parts

• to change the direction of the force, and to reduce the

• to reduce the amount of force needed

• To store energy

A two-pulley system will reduce the effort by half.

• True

• False

• True, but only on weekends

• False, pulleys only change direction of the force

Which of the following best describes how gears work?

• Gears change the direction of a force

• Gears transfer motion and force from one part of a machine to another.

• Gears reduce the amount of force needed to move objects

• gears increase friction.

the relationship between the number of rotations or teeth between two gears in a gear system is-

• gear ratio

• gear friction

• gear friendship

• all of the answers

If you have two gears on a gear system, the driver gear is-

• the gear that turns the other gears.

• the gear that is being turned by another gear

• all gears are driver gears

• all gears are driven gears

Driver gears are also known as_________ and driven gears are ________ gears.

• Input gears, output

• output gear, input

• output gears, output

• input gears, input