Aerial Apparatus pt. 3 Flashcards
?s 106 - 153
In a hydraulic system, the medium used to transmit force is:
hydraulic fluid
If an apparatus begins to skid, you should:
turn the apparatus steering wheel so the front wheels face the direction of the skid.
The lower cord of an aerial ladder to which the rungs, trussing, and other portions of an aerial ladder are attached is the:
base rail.
The use of warning devices:
negates some traffic laws.
What are two primary areas of concern and focus on articulating platforms?
Articulating elbow/working end
NFPA 1901 establishes minimum requirements for forcible entry that specifically includes:
pickhead axes
One way to effect a blitz attack with an elevated master stream is to try to deflect water off the _______ of the fire room.
ceiling
When parked on a ________ grade, do not extend or retract the aerial device over the side of the apparatus.
longitudinal
A double-acting hydraulic cylinder is different from a standard hydraulic cylinder because it:
is capable of receiving pressurized oil from both sides of the piston.
Which establish requirements for seat belts on fire apparatus?
NFPA 1901 & NFPA 1500
Minimum qualifications for fire apparatus driver/operators are set by:
NFPA 1002
The transition from the water tank to an external water supply:
must be made without disrupting the fire attack.
Which is true with regard to using the inter-axle differential lock on vehicles so equipped?
Always unlock the inter-axle differential lock switch again when road conditions improve.
If the foam concentrate inlet to the eductor is too high:
foam may not be inducted
The purpose of using a spotter is to assist:
the driver by observing the area in the blind spot.
What is the first step for retracting the stabilizers?
Remove the safety pins from the jacks.
______ tests include manufacturer’s tests, aerial device certification tests, and acceptance tests.
Preservice
Approximately ____ psi should be added to the desired engine pressure for each floor above the standpipe connection.
5
Jackknifing occurs when the trailer and cab are:
LESS than a 90 degree to one another while in motion or static.
When more than one emergency vehicle are responding along the same route, units should travel at least ______ feet apart.
300 - 500
Prior to changing from tank water to an external source:
make sure all air is bled from the intake.
You are responding to an emergency in the center lane when the vehicle ahead stops. Which evasive tactic should be employed?
Brake to reduce speed as you pass on the left side.
The two (2) types of position grades on which you may find yourself setting up are:
longitudinal and lateral.
Which statement must be observed when using foam?
The eductor must control the pressure through the system.
When moving victims down aerial ladders:
infants and small children may be cradled down.
The use of auxiliary hydraulic pumps on aerial devices should be limited to:
bedding the aerial device after the main system failure occurs.
When operating an aerial platform to a window for the purpose of rescue, the aerial platform may be placed with the:
top rail of the platform even with the window sill.
A disadvantage of having inverters is:
limited mobility from the vehicle.
When operating an aerial ladder to a window for the purpose of rescue, the aerial ladder tip should be placed with the first rung:
even with the window sill.
Most manufacturers recommend that the ____ stabilizers be lowered first when operating on a slope.
UPHILL
The _______ is the most basic type of portable foam proportioner.
in-line eductor
The tractor-trailer apparatus/tiller should never be positioned with the tractor and trailer at an angle:
GREATER than 90 degrees
In an auxiliary cooling system, heat is transferred from the engine coolant to the:
radiator.
If you violate state, local, or department driving regulations and are involved in an accident, you may be subject to:
civil prosecution.
The angle formed by level ground and a line from the point where the REAR tires touch the ground to the bottom of the frame at the wheel base MIDPOINT is the:
Breakover Angle.
When stabilizing tractor-trailer aerial apparatus/tiller, maximum stability occurs when the angle of the tractor is _____ degrees from the centerline of the trailer, and the aerial ladder is operated toward the outside of the angle.
60
When washing a fire department apparatus, water should be applied with a:
garden hose that does not have a nozzle attached.
The manufacturer’s manual will _______ the Society of Automotive Engineers (SAE) number for the engine oil.
recommend
The top cord of an aerial ladder to which the opposite ends of the trussing are attached is the:
handrail.
The correct order of operation for any telescoping aerial device is:
Elevate, Rotate, Extend, Lower
Which is true with regard to backing fire apparatus?
Two spotters are preferable to one spotter
When elevated master streams are used for a blitz attack, you should continue to flow water until:
fire is darkened down.
Heavy weight carried on most fire apparatus can contribute to _______ due to excessive weight transfer.
skidding
To select the proper lubricant, primary consideration must be given to the:
manufacturer’s recommendations.
Which statement regarding vehicle-mounted generators is true?
They usually have a larger capacity than portable units.
The servicing of air filters should be carried out:
as required by the manufacturer.
Many traffic accidents involving apparatus are caused by the operator:
focusing too much on the traffic in front of the apparatus.
Which is basically a two-part device?
Box Stabilizers
