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30 questions from the firefighter and fire alarm basics practice test.
10 questions, graded as you go, with the reason for every answer. No sign-up.
A ladder is raised with 24 ft of its length between the ground and the point where it rests on the wall. For the correct climbing angle, how far from the wall should the butt be?
B. 6 ft
The butt is placed about one quarter of the working length from the building: 24 / 4 = 6 ft. Using one third gives 8 ft, which makes the angle too flat.
Reference: Firefighter I: ground ladders, placement
On an extension ladder, which part locks the fly section in place once it is raised?
C. The pawls (dogs)
Pawls, also called dogs, hook over a rung of the bed section to hold the fly. The halyard is the rope used to raise the fly; it is tied off afterward but is not what carries the load.
Reference: Firefighter I: ground ladders, construction
For rescuing a person through a window, the ladder tip should be placed
B. At or just below the window sill
With the tip at or just under the sill, the whole opening is clear for the victim and rescuer to pass through. A tip inside or above the opening blocks the way out.
Reference: Firefighter I: ground ladders, placement for rescue