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

A larger driven gear turns slower in proportion to its tooth count, so 30/10 means it turns three times slower.

Question 2

A first-class lever has the fulcrum located where?

Accepted Answer

Between the effort and the load

Answer

In a first-class lever, like a seesaw, the fulcrum sits between the effort and the load.

Question 3

Which simple machine is a doorknob an example of?

Accepted Answer

Wheel and axle

Answer

A doorknob turns a small shaft (axle) using a larger wheel, making it a wheel and axle.

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

A longer ramp reduces the slope, decreasing the effort required to move the load up.

Question 5

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

Accepted Answer

Equally in all directions

Answer

Pascal's principle states that pressure on a confined fluid is transmitted equally in all directions.

CPS Firefighter Test Practice Test

CPS Firefighter Test Practice Test

CPS Mechanical Aptitude and Principles 2