OFAI OFAI - Firefighter Aptitude Test Ontario Mechanical Aptitude and Physical Sciences Questions and Answers 2

Question 1

A gear with 20 teeth meshes with a gear with 10 teeth. If the larger gear rotates at 100 RPM, at what speed does the smaller gear rotate?

Accepted Answer

200 RPM

Answer

50 RPM

Answer

100 RPM

Answer

150 RPM

Question 2

Which class of fire involves flammable liquids such as gasoline and oil?

Accepted Answer

Class B

Answer

Class A

Answer

Class C

Answer

Class D

Question 3

A firefighter climbs a ladder leaning against a wall at a 75-degree angle from the ground. What is the primary force keeping the base of the ladder from sliding?

Accepted Answer

Friction

Answer

Gravity

Answer

Air pressure

Answer

Tension

Question 4

If a firefighter exerts 200 pounds of force over a distance of 5 feet to move a door, how much work is done?

Accepted Answer

500 foot-pounds

Answer

40 foot-pounds

Answer

100 foot-pounds

Answer

1,000 foot-pounds

Question 5

A SCBA cylinder is rated at 4,500 PSI. After use it reads 1,500 PSI. What fraction of the air supply remains?

Accepted Answer

One-third

Answer

One-quarter

Answer

One-half

Answer

Two-thirds

Question 6

Heat transfer that occurs when hot air rises and cool air sinks is called:

Accepted Answer

Convection

Answer

Conduction

Answer

Radiation

Answer

Combustion