CPS Mechanical Aptitude and Principles 2

Question 1

Two gears are meshed together. If the driving gear has 10 teeth and the driven gear has 30 teeth, how does the driven gear turn compared to the driver?

Accepted Answer

Three times slower

Answer

Three times faster

Answer

At the same speed

Answer

In the same direction

Question 2

A first-class lever has the fulcrum located where?

Accepted Answer

Between the effort and the load

Answer

At the load end

Answer

At the effort end

Answer

Outside both the effort and load

Question 3

Which simple machine is a doorknob an example of?

Accepted Answer

Wheel and axle

Answer

Pulley

Answer

Inclined plane

Answer

Wedge

Question 4

If you increase the length of a ramp while keeping the same height, what happens to the effort needed to push a load up it?

Accepted Answer

It decreases

Answer

It increases

Answer

It stays the same

Answer

It drops to zero

Question 5

In a hydraulic system, pressure applied to a confined fluid is transmitted how?

Accepted Answer

Equally in all directions

Answer

Only downward

Answer

Only in the direction of the force

Answer

It weakens with distance

Question 6

A fixed pulley attached to a ceiling primarily changes what?

Accepted Answer

The direction of the force

Answer

The amount of force needed

Answer

The weight of the load

Answer

The speed of gravity

Question 7

Which material would conduct heat fastest, an important factor for firefighters handling tools?

Accepted Answer

Copper

Answer

Wood

Answer

Rubber

Answer

Plastic