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principles of pressure > CHAPTER 2 > Flashcards

CHAPTER 2 Flashcards

1
Q

NEWER APPARATUS MAY BE EQUIPPED WITH ELECTRICAL____ THAT ARE INTENDED TO PREVENT AN ______OF A VEHICLE ELECTRICAL GENERATION SYSTEM

A

LOAD MANAGEMENT SYSTEM/ OVERLOAD

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2
Q

an inspection where certain system or component of an apparatus is operated to ensure that it is functioning properly

A

FUNCTIONAL CHECK

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3
Q

What NFPA requires that driver engineer be skilled in the performance of certain maintenance tasks

A

NFPA 1002

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4
Q

it is never acceptable to mix ____tire with ___-___ tire

A

radial/bias-ply

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5
Q

old tires with generous ___depth have been the cause of blowout that led to Serious accident and death

A

tread

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6
Q

the correct tire for any commercial vehicle is determined after the vehicle’s

A

specifications are final

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7
Q

Load management system sometimes incorporate a_____ and _____ into the same device

A

load sequencer and load monitor

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8
Q

the maximum tire pressure imprinted on the exterior of each tire is not the recommended . set and maintain the tire pressure at the manufacturers pressure recommendation for the correct ___ ___ , _____ _______ and measured in service axle loads

A

operating pressure / tire size, type, load range

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9
Q

anti lock braking system reduce the possibility of an apparatus going into

A

slide , jackknife, are spin during heavy braking.

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10
Q

THE MANUFACTURER DETERMINES THE _____AS THE MAXIMUM AMOUNT WEIGHT AT WHICH A VEHICLE CAN BE SAFELY OPERATED ON ROADWAYS IN IDEAL CONDITIONS

A

GROSS VEHICLE WEIGHT RATE

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11
Q

Device that watches an electrical system for added Load that may threaten to overload the system

A

LOAD MONITOR

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12
Q

DRIVER SHOULD UNDERSTAND ALL THE INFORMATION IMPRINTED ON THE ____OF A TRUCK TIRE

A

SIDEWALL

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13
Q

When a overload condition occurs,the load monitor shut down the less important electrical equipment to prevent the overload

A

LOAD SHEDDING

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14
Q

the component used to push on the internal clutch fingers connected to the clutch pedal and when activated disengage the clutch from the engine

A

THROW OUT BEARING

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15
Q

The amount of travel the clutch has before it begins to disengage the engine from the transmission

A

Free play (free travel)

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16
Q

_____weight is the weight of an empty Fire Apparatus fresh off the assembly line with no tools,water,equipment, or passengers

A

curb

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17
Q

Insufficient free play will cause clutch

A

1: SLIP
2: OVERHEAT
3: WEAR OUT

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18
Q

the manufacturer determines the ______maximum weight which a vehicle can be safely operated on roadways in ideal condition

A

GVWR

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19
Q

Steering wheel play should be

A

No more than 10° in both directions.

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20
Q

ABS brakes also assist the driver operator in keeping the apparatus in a ____ ________during heavy or emergency braking. ______ __________ does not necessary provide a faster stop, but it greatly enhance a control stop.

A

STRAIGHT TRAJECTOTY / ABS TECHNOLOGY

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21
Q

20” steering wheel may have?

A

2” play

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22
Q

device use in an air brake system that connect between the activation pads and the brake pads that compensate for brake pad wear

A

slack adjuster

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23
Q

the driver / operator should conduct an____( required by many state and provinces before road operation of a commercial vehicle)as defined by the AHJ inspection and maintenance schedule

A

air brake test

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24
Q

Air-actuated braking system

A

1: Use compressed air to hold off spring break (parking brake)
2: Applies air pressure to a service brake for vehicle stopping.
3: Used by most modern fire department.

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25
Q

How often should apparatus brakes be thoroughly tested

A

At least annually

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26
Q

Once the entire exterior of the apparatus has been inspected, the in-cab checks have been completed, and the airbrake testing is complete, the driver should shut off the engine prepare to perform checks and routine preventive maintenance in the ______ _________

A

ENGINE COMPARTMENT

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27
Q

For inspection of Vehicles equipped with a tilt cab ensure that the control operates _____ without binding and that the hold-open device is latch. in addition, check cab latches for security of mounting, lubrication, and accumulation of metal fillings,n the mechanism.

A

FREELY

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28
Q

SAE #

A

Indicates the viscosity of the oil

29
Q

to select the proper lubricant, consider the_____ of the unit the____ of the lubricant and the ______recommendations

A

requirements,characteristics,manufacturer’s

30
Q

Essential characteristics of oil are

A

1: corrosion protection
2: foaming
3: sludging and carbon build up

31
Q

the manufacturer’s manual will recommend the____numbers for engine oil

A

Society of Automotive Engineers

32
Q

Systematic maintenance procedures should specify:

A

1: maintenance procedures
2: when they are performed
3: Who is responsible for conducting the maintenance.

33
Q

operate the pump Handle on the lubrication gun until___is felt

A

resistant

34
Q

Driver should perform______/_____ to ensure that all work has been properly completed in accordance with the manufacturer’s guidelines AHJ

A

POST-MAINTENANCE/REPAIR INSPECTION

35
Q

most Automotive batteries contain

A

sulfuric acid and Lead

36
Q

Standards for testing D/E are found in?

A

NFPA 1002

37
Q

NFPA 1901 braking test requires that new apparatus brought to a complete stop from the speed of 20 mph in the distance not to exceed?

A

35 feet

38
Q

On a apparatus with air brakes.NFPA require the air pressure to build up sufficient air level within

A

60 seconds of starting

39
Q

Apparatus with air brakes are to be equipped with an air protection valve.That prevents the air horn from operating when the pressure in the reservoir drops below

A

80psi

40
Q

Except when in a contaminated area. When should you shut down the engine after a full load operation?

A

Wait 3 to 5 minutes 20 I’ll temperature to stabilize.

41
Q

The NFPA brake standard requires that parking brake hold the apparatus?

A

In place on a grade of up to 20%

42
Q

Stopping distance should not exceed 20’

A

When the brakes are applied @ 5 mph

43
Q

Air brakes respond slower than Hydraulic brakes

A

True

44
Q

What are two proactive measures that can ensure that a piece of fire apparatus is maintained in the highest state of readiness

A

1• Preventive maintenance program

2• Routine maintenance checks

45
Q

The goal of preventive maintenance is to

A

Eliminate unexpected and catastrophic failures that may endanger fire fighters and the general public

46
Q

Which NFPA outlines methods for brake tests

A

NFPA 1911

47
Q

What are the two types of inspection conducted during a walk around inspection

A

1• operational readiness inspection(required
by NFPA standards and AHJ)
2• Vehicle pretrip road worthiness inspection

48
Q

Many serious fire apparatus collisions have been caused by

A

Faulty brakes

49
Q

Who may dictates how and brakes are tested

A

1• Federal
2• State
3• provincial laws

50
Q

Most large,modern,fire department Pumping apparatus are equipped with

A

Air-actuated braking system (air brakes)

51
Q

the cab should be lifted ______on a basic for thorough inspection of the engine compartment

A

weekly

52
Q

if an overload condition occurs,the ____ will shut down less important _____equipment in order to prevent the overload

A

LOAD MONITOR / ELECTRICAL

53
Q

Per NFPA 1911 check for bulges greater than ___

A

3/8 of an inch

54
Q

Step on the brake pedal firmly when the apparatus is moving at about ____The Apparatus should come to a complete stop within about ___

A

5 mph,20 feet

55
Q

The maximum amount of weight that axle system can safely carry

A

Gross Axle Weight Rating

56
Q

Tire selections for fire apparatus are based on ____ for the Apparatus

A

gross axle weight rating

57
Q

effective lubrication depends on use of the

A

proper grade lubricant, the frequency of the lubrication , the amount used, and the method of lubrication

58
Q

Trails of fluid on the wheel or tire indicated

A

Axle gear oil leaks

59
Q

With engine off and master switch on, pump brake pedal continually lowers air tank pressure. Warning light and buzzer should activate before

A

60 psi

60
Q

Air pressure should build to 85-100 psi

A

In 45 seconds at full Engine RPM

61
Q

Apply the brake pedal, lowering the pressure in the tanks by

A

5 to 10 psi increments stopping at 85 psi

62
Q

After one minute, air pressure should not drop than

A

3 psi straight chassis or 4 psi for tractor drawn aerial

63
Q

Continue to pump brake pedal until air brake control sets automatically by the button popping out

A

Between 20 and 40 psi

64
Q

Some vehicles coolant reservoir have two marks : one for when the engine is hot, the other

A

When it is cool

65
Q

If the apparatus has unsealed batteries, carefully remove the caps and check the

A

Electrolyte (water) level.. add distilled water or water recommended to cell if low

66
Q

Clean away any corrosion around terminals with a mixture of

A

Baking soda and water

67
Q

If batteries are washed, dried batteries to prevent

A

Parasitic current

68
Q

Clean road debris,dirt, dust, moisture from the top of the batteries to prevent any___from terminal to terminal that can result in electronics issues

A

Bleed of current

principles of pressure (17 decks)

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