CPS CPS Firefighter Test Mechanical Aptitude and Principles Questions and Answers 3

Question 1

A firefighter applies 50 lbs of force to a wheel with a 12-inch radius attached to an axle with a 3-inch radius. What force is exerted at the axle?

Accepted Answer

200 lbs

Answer

12.5 lbs

Answer

50 lbs

Answer

150 lbs

Question 2

When a firefighter uses a screwdriver, which simple machine principle is being applied?

Accepted Answer

Wheel and axle

Answer

Inclined plane

Answer

Wedge

Answer

Lever

Question 3

A firefighter's pike pole is used to pull down a ceiling. If it is used as a lever with a fulcrum at the shoulder (2 ft from effort, 6 ft from load), what is the mechanical advantage?

Accepted Answer

0.33

Answer

1

Answer

2

Answer

3

Question 4

Which factor most directly determines the pressure at the bottom of a water tank used for fire suppression?

Accepted Answer

Height of the water column

Answer

Volume of water

Answer

Shape of the tank

Answer

Weight of the tank

Question 5

A firefighter uses an inclined plane (ramp) to load equipment into a truck. The ramp is 10 feet long and raises the load 2 feet. What is the mechanical advantage?

Accepted Answer

5

Answer

2

Answer

8

Answer

10

Question 6

Two springs are connected in parallel supporting a load. If each spring has a constant of 100 lb/in, what is the combined spring constant?

Accepted Answer

200 lb/in

Answer

50 lb/in

Answer

100 lb/in

Answer

150 lb/in