FF1 Exam (New 2023/ 2024) Questions and
Verified Answers| 100% Correct
QUESTION
Access to water supply systems may be made
... [Show More] through
Answer:
waterflow control valves
QUESTION
This type of hydrant receives water from more than one direction
Answer:
circulating hydrant
QUESTION
This type of hydrant has the main control valve at the base of the hydrant below the frost line
Answer:
Dry-barrel hydrant
QUESTION
What is water hammer?
Answer:
closing the hydrant too quickly causing a sudden increase in pressure
QUESTION
These couplings are lightweight and high strength
Answer:
Extruded
QUESTION
These couplings are weak
Answer:
Cast
QUESTION
These couplings are the highest strength, and cost the most money. Made of brass
Answer:
Drop forged
QUESTION
Nonthreaded couplings that are joined, rotated and locked in place
Answer:
Storz couplings
QUESTION
What's a hose jacket?
Answer:
Lays over damaged hose
QUESTION
How much 2 1/2 inch hose needs to be carried on an engine minimum?
Answer:
800 feet of 2 1/2, 400 feet of attack hose
QUESTION
A short fold or reverse bend made in the hose during the loading process is called what?
Answer:
A dutchman
QUESTION
Attack hoselines should be connected to the standpipes where?
Answer:
one floor below the fire floor
QUESTION
How many sections of hose should replace one burst section?
Answer:
2 hose sections should replace any 1 bad section
QUESTION
How does water extinguish fire?
Answer:
by absorbing heat
QUESTION
The amount of energy required to increase the temperature of a substance by 1 degree
Answer:
specific heat
QUESTION
The amount of heat required to convert a unit of mass of a liquid into a vapor without
temperature change
Answer:
latent heat of vaporization
QUESTION
Water expands about _______ its original volume as it is vaporized into steam
Answer:
1,700 times
QUESTION
Steam produced on contact with hot surfaces causes the upper layer of hot smoke and fire gases
to expand
Answer:
Downward
QUESTION
What causes the upper layer of hot smoke and fire gases to contract toward the ceiling?
Answer:
steam formed in the upper layers of hot fire gases
QUESTION [Show Less]