(2) Bk 6- AOTM Flashcards
AOTM- _____ occurs when an engine is operating below recommended operating range
Lugging
AOTM- The engine lubrication system generally used in fire apparatus is the _______ lubrication system.
Full Force-feed lubrication system
AOTM- The purpose of _______ is to transmit power of the engine to the wheels.
Power train
AOTM- A ________ is a flexible coupling between two shafts that permits one shaft to drive another at an angle to it
Universal joint
AOTM- The ______ provides the necessary telescopic action for a driveshaft
Slip joint
AOTM- The __________ permits a difference of rotational speed of the axles
Differential
AOTM- The function of the __________ is to change the direction of the power transmitted by the driveshaft through 90° to the driving axels. It is found between the driveshaft and the differential.
Final drive
AOTM- A _____ axel is one that supports part of the weight of a vehicle and also drives the wheels connected to it.
live axle
AOTM- A ______ axel is one that carries part of the weight of a vehicle but does not drive the wheels.
Dead axel
AOTM air brakes- The air compressor operates continuously while the engine is running, but the actual compression of air is controlled by the _____.
Governor
AOTM Spotting Aerials- In the downtown area the curbs are approximately _____ feet from the building line.
11 ft
AOTM Aerial Spotting- To compensate for excessive street grades, spot the aerial apparatus ____(up or down) slope from the area of operation.
This prevents rung tilt and improves the stability of the aerial
Down slope
AOTM Aerial Spotting- The ideal angle for jackknifing an apparatus is ___ degrees from the in-line position, away from the direction of ladder extension.
60°
AOTM Aerial Spotting- Even at a 30° jackknife, the stability of the aerial is how many times greater than just the in-line position?
Twice
AOTM Aerial Ops- When set correctly, the offside ground jack may leave the ground ___ inch(es) or more but resets itself when the aerial is brought back in line with the trailer
1” or more
AOTM Aerial Ops- When spotting the aerial to windows and fire escapes balconies, raise the ladder ___ ft above the sill or railing
1 foot
AOTM Ladderpipe Ops- The hose line on the aerial are loaded when the angle of inclination is ____ degrees.
50°
AOTM Ladderpipe Ops- Do not direct the Ladderpipe nozzle/hose line past ____ degrees from in-line. If needed, the aerial can be rotated to the needed direction.
15°
AOTM:
the best climbing angles on the aerial ladder are from ___ to ___ degrees inclination from horizontal
70 to 80
AOTM:
Spotting close to the curb in the downtown area offers the AO the ability to operate between the ___ and ___ floors and maintain a climbing angle between ___ and ___ degrees inclination
•5th and 8th floors
•70 to 80°
AOTM:
Spotting close to the curb in the downtown area and operating the aerial below the ___ floor results in climbing angles of less than 70°
5th
AOTM:
In the downtown area, where a spot is made outside the line of parked cars, any operation below the 7th floor will be conducted at a climbing angle of less than ____ degrees inclination
70°
AOTM:
It is best to have the aerial ladder hoisted to at least a ___ degree angle before operating the other controls.
45°
AOTM:
How can an aerial ladder be used to break windows?
Extending the aerial through the window, not dropping/lowering down (will cause aerial damage if it strikes the sill)
LAFD apparatus should be considered as over-speeding at anytime the engine rpm’s exceed ___% of the peak engine speed.
90%
Descending grades:
To prevent excessive road and engine speed, select a transmission gear which will keep the engine speed in the lower ____ of the operating range when the brakes are constantly applied with light to moderate pressure.
2/3rds
AOTM:
After a hard run or a long climb, the temperature of a turbocharger will rise as much as ____ degrees F. over normal operating temperature of 900°F to 1100°F.
100°F
What are the four functions of engine oil?
1.To prevent metal to metal contact in moving parts
2. Assist in carrying heat away from the system
3. Clean engine parts
4. Form a seal between the piston rings and cylinder walls to prevent blow-by of combustion gases
AOTM:
Under normal conditions, when ground jacks are in place on concrete streets or blacktop, they _____ (do or do not?) provide ground for an electrically charged apparatus.
Do not
An exception to this rule is when the jacks are resting on a rail, puddle of water, or other similar situation
AOTM:
Under what five general conditions should a ladder pipe be used?
- Attack fires in upper levels of multi-story buildings
- Improvised standpipe
- Roof areas, that would not otherwise be accessible
- Large open areas
- To protect exposures
AOTM- The cycle of the gasoline engine is often referred to as having constant VOLUME combustion while the diesel cycle is said to have constant _______ combustion.
Pressure
