(2) Bk 6- AOTM Flashcards

1
Q

AOTM- _____ occurs when an engine is operating below recommended operating range

A

Lugging

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2
Q

AOTM- The engine lubrication system generally used in fire apparatus is the _______ lubrication system.

A

Full Force-feed lubrication system

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3
Q

AOTM- The purpose of _______ is to transmit power of the engine to the wheels.

A

Power train

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4
Q

AOTM- A ________ is a flexible coupling between two shafts that permits one shaft to drive another at an angle to it

A

Universal joint

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5
Q

AOTM- The ______ provides the necessary telescopic action for a driveshaft

A

Slip joint

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6
Q

AOTM- The __________ permits a difference of rotational speed of the axles

A

Differential

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7
Q

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.

A

Final drive

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8
Q

AOTM- A _____ axel is one that supports part of the weight of a vehicle and also drives the wheels connected to it.

A

live axle

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9
Q

AOTM- A ______ axel is one that carries part of the weight of a vehicle but does not drive the wheels.

A

Dead axel

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10
Q

AOTM air brakes- The air compressor operates continuously while the engine is running, but the actual compression of air is controlled by the _____.

A

Governor

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11
Q

AOTM Spotting Aerials- In the downtown area the curbs are approximately _____ feet from the building line.

A

11 ft

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12
Q

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

A

Down slope

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13
Q

AOTM Aerial Spotting- The ideal angle for jackknifing an apparatus is ___ degrees from the in-line position, away from the direction of ladder extension.

A

60°

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14
Q

AOTM Aerial Spotting- Even at a 30° jackknife, the stability of the aerial is how many times greater than just the in-line position?

A

Twice

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15
Q

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

A

1” or more

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16
Q

AOTM Aerial Ops- When spotting the aerial to windows and fire escapes balconies, raise the ladder ___ ft above the sill or railing

A

1 foot

17
Q

AOTM Ladderpipe Ops- The hose line on the aerial are loaded when the angle of inclination is ____ degrees.

A

50°

18
Q

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.

A

15°

19
Q

AOTM:

the best climbing angles on the aerial ladder are from ___ to ___ degrees inclination from horizontal

A

70 to 80

20
Q

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

A

•5th and 8th floors

•70 to 80°

21
Q

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°

A

5th

22
Q

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

A

70°

23
Q

AOTM:

It is best to have the aerial ladder hoisted to at least a ___ degree angle before operating the other controls.

A

45°

24
Q

AOTM:

How can an aerial ladder be used to break windows?

A

Extending the aerial through the window, not dropping/lowering down (will cause aerial damage if it strikes the sill)

25
Q

LAFD apparatus should be considered as over-speeding at anytime the engine rpm’s exceed ___% of the peak engine speed.

A

90%

26
Q

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.

A

2/3rds

27
Q

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.

A

100°F

28
Q

What are the four functions of engine oil?

A

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

29
Q

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.

A

Do not

An exception to this rule is when the jacks are resting on a rail, puddle of water, or other similar situation

30
Q

AOTM:

Under what five general conditions should a ladder pipe be used?

A
  1. Attack fires in upper levels of multi-story buildings
  2. Improvised standpipe
  3. Roof areas, that would not otherwise be accessible
  4. Large open areas
  5. To protect exposures
31
Q

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.

A

Pressure