CHAPTER 15-16-20 TEST Flashcards

1
Q

The primary way water extinguishes fire is by:

A

Absorbing heat

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2
Q

As water is vaporized into steam, it expands approximately _____ it’s original volume.

A

1700 times

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3
Q

A fire stream is a stream of water or extinguishing agent after it:

A

Leaves the fire hose nozzle until it reaches the desired target

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4
Q

What factor may affect a fire stream?

A

Wind direction and velocity

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5
Q

To extinguish by cooling, the fire stream must:

A

Absorb over 50 percent of heat generated by the fire

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6
Q

Which fire stream pattern is produced by a fixed orifice, smooth bore nozzle?

A

Solid stream

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7
Q

Characteristics of water that make it valuable for fire extinguishment include:

A

A greater heat absorbing capacity than other agents

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8
Q

Which nozzle produces a compact stream with little shower or spray?

A

Smooth bore nozzle

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9
Q

How may gravity, friction of air, and wind act on a solid fire stream?

A

They may decrease the reach of the stream

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10
Q

Which fire stream pattern is usually produced by a fog nozzle?

A

Straight stream

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11
Q

Hose lines are more likely to link with a smooth bore nozzle because the nozzle uses less pressure. True or false?

A

True

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12
Q

When used with a smooth bore nozzle, a nozzle control valve that causes turbulence when partially open which can affect the quality of a fire stream is the:

A

Ball valve

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13
Q

The purpose of a fire alarm system is to:

A

Notify building occupants of an emergency condition

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14
Q

Which fire alarm component sends a signal to the fire alarm control panel?

A

Initiating device

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15
Q

What is a manually activated alarm initiating device?

A

Pull station

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16
Q

A fragile bulb heat detector is activated when:

A

A small glass vial breaks when heated, allowing electrical contacts to complete a circuit

17
Q

What type of hose transports water or other agents, at increased pressure from a pump equipped apparatus to a nozzle?

A

Attack hose

18
Q

Which types of lugs are found on modern couplings?

A

Rocker

19
Q

Which type of nonthreaded couplings have two hooklike lugs on each coupling?

A

Quarter turn

20
Q

How can mechanical damage to hoselines be prevented?

A

Provide traffic control to prevent vehicles from driving over hose

21
Q

What is an example of chemical damage to hose?

A

Exposure to motor oil and gasoline

22
Q

How should fire hose couplings be cared for?

A

Inspect gaskets and replace if cracked or creased

23
Q

Where might booster hose reels be mounted on the apparatus?

A

In rear compartments

24
Q

What is an advantage of the forward lay?

A

Pumper can remain at the incident scene so hose and equipment are readily available

25
Q

Which hose lay is used when the pumper must first go to the fire location before laying the supply line

A

Reverse lay

26
Q

Where should the nozzle operator and members of the hose team be located?

A

On the same side of the hose line

27
Q

When operating small hoselines with two firefighters, the backup firefighter takes a position_____.

A

On the same side of the hose about 3ft

28
Q

Which size fire stream flows 40-350gpm

A

Handline stream