CPS CPS Firefighter Test Mechanical Aptitude and Principles Questions and Answers 2

Question 1

A firefighter needs to move a heavy hose reel using a lever. If the effort arm is 4 feet and the load arm is 1 foot, what is the mechanical advantage?

Accepted Answer

4

Answer

1

Answer

2

Answer

8

Question 2

Water flows through a 4-inch diameter pipe and enters a 2-inch diameter pipe. How does the water velocity change?

Accepted Answer

It quadruples

Answer

It decreases by half

Answer

It stays the same

Answer

It doubles

Question 3

Which type of pulley system provides a mechanical advantage greater than 1 by using multiple sheaves?

Accepted Answer

Block and tackle

Answer

Fixed pulley

Answer

Single movable pulley

Answer

Wheel and axle

Question 4

A firefighter climbs a ladder leaning against a building. As the ladder angle decreases (becomes more horizontal), the force at the base of the ladder:

Accepted Answer

Increases

Answer

Decreases

Answer

Remains constant

Answer

Reverses direction

Question 5

In a hydraulic system, a small piston with area 2 sq in applies 100 lbs of force. What force does a large piston with area 10 sq in exert?

Accepted Answer

500 lbs

Answer

20 lbs

Answer

100 lbs

Answer

200 lbs

Question 6

A gear with 12 teeth drives a gear with 36 teeth. If the drive gear rotates at 90 RPM, what is the speed of the driven gear?

Accepted Answer

30 RPM

Answer

10 RPM

Answer

90 RPM

Answer

270 RPM