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Pumping Operations > Pump Ops 54 Additional Questions > Flashcards

Pump Ops 54 Additional Questions Flashcards

1
Q

Flow pressure from a hydrate is measured using a?

A

Pito Tube

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2
Q

The three methods of moving water in a water supply system include Direct Pumping, Gravity and___?

A

Combination

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3
Q

The purpose of positive pressure ventilation is to?

A

Create greater pressure inside a building than outside the building

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4
Q

Nozzles with flows excess of __ are not recommended for handlines?

A

350 gpm

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5
Q

A Sodium fire is what class?

A

Class “D”

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6
Q

When forcing open a sectional overhead door less damage will occur and more time will be saved if?

A

Panel is removed and a latch is turned from the inside

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7
Q

To break tempered plate glass doors firefighter should use ____ at the bottom corner using a shield?

A

The pike end of a pike headed axe

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8
Q

The transfer of heat energy from liquid or gas to solid surface is referred to as?

A

Convection

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9
Q

The best place to begin a pre-incident survey of a building is the?

A

Exterior

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10
Q

To be an effective cooling agent water streams need to be applied so they form a?

A

Protective water film on the exposed surface

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11
Q

When performing a search on a fire floor the firefighter should?

A

Start as close to the fire as possible and towards the entrance door

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12
Q

Smoke that indicates a backdraft or smoke explosion condition is?

A

Black smoke becoming dense grey-Yellow

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13
Q

Which is the primary advantage of a forward hose lay?

A

The pumper can remain at the incident scene so that the hose, equipment and tools are readily accessible.

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14
Q

The greatest disadvantage to using forced ventilation is that?

A

The fire may intensify and spread

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15
Q

The contents of the room simultaneously reach their ignition temperature

A

The current recognize capacities for pumpers increases from 750-2000gpm in what increments?

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16
Q

The current recognize capacities for pumpers increases from 750-2000gpm in what increments?

A

250gpm

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17
Q

Which is the first part of the impeller that receives water from the intake side of a centrifugal pump?

A

Eye

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18
Q

When pumping from a hydrant, hookup gauge on the pump panel indicates residual pressure?

A

Master Intake

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19
Q

The maximum amount of vacuum at most pumps will develop is approximately?

A

22” mercury

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20
Q

The injector plunger in a diesel engine id lubricated by?

A

Fuel

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21
Q

Which type of pumper compensates for wear and is most efficient at pumping air?

A

Rotary Vane

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22
Q

Assuming the terrain is level what is the recommended pressure for pumpers in a constant pressure relay?

A

175 psi

23
Q

The discharge gpm in pressure comparison on a two stage pump in the pressure mode operating at 150psi is such that the?

A

GPM goes down as the PSI goes up

24
Q

A centrifugal pump must be equipped with a relief valve or pressure governor because when the flow of water is stopped?

A

The pressure output of the pump will tend to increase

25
Q

Most primers use and oil supply, the vent in the oil line from the reservoir to the primer pump?

A

Breaks the siphon of the oil into the pump after use

26
Q

When priming a multi-stage pump the transfer valve should be in the _____ position in order to prevent air from being trapped inside the pump?

A

Volume

27
Q

When the impeller speed is doubled on a centrifugal pump the pressure will?

A

Will increase four times if all factors remain constant

28
Q

The two basic types of flow meters sensors used by the fire service are the spring probe and the?

A

Paddle Wheel (DO pg 252)

29
Q

Cavitation most often occurs?

A

During drafting operations

30
Q

The top surface of a piston is called?

A

Head

31
Q

The purpose of the ignition coil in a gasoline engine is to step up the 12volts from the battery to approximately?

A

20,000 volts needed to jump the gap in the spark plug

32
Q

Pumpers that are in-service should be tested at least _____ to determine there condition?

A

Annually

33
Q

The shaft that supports loads may support braking and is that upon which the wheel rotates is referred to as?

A

Dead axle

34
Q

The maximum pre-glow time for an AC fast heat glow plug in a diesel engine is __ seconds?

A

7

35
Q

Most fire apparatus use an AC self retecifing generator, generally referred to as?

A

Alternator

36
Q

Which is a positive displacement pump?

A

Priming Pump

37
Q

In a rotary gear pump one gear is designated as the driving gear, and the other gear is referred as the?

A

Driven gear

38
Q

Which device controls pressure by opening a by-pass between the discharge and suction side of the pump?

A

Relief valve

39
Q

The heart of a centrifugal pump is a rotating disk called?

A

Impeller

40
Q

If the fire pump operates at a discharge pressure higher than ____psi volume capability of the pump is reduced proportionally?

A

150

41
Q

During operations of the pumper from draft the most common type of contamination to the pump involves the intake of?

A

Sand

42
Q

The volute in a centrifugal pump enables the water to?

A

Build pressure before leaving the pump

43
Q

Using two full twists in a soft sleeve hose between the hydrate and the pumper?

A

Prevents the formation of kinks in the hose

44
Q

At 212°F water converts into steam, exspandes approxiatly ___ times its orginal volume?

A

1,700

45
Q

At sea level the atmosphere exhausted a pressure of?

A

14.7psi

46
Q

The difference in pressure in a hoseline between a nozzle and a pumper is a good example of?

A

Friction Loss

47
Q

The force of water discharging from nozzle causes a counter force knows as?

A

Nozzle Reaction

48
Q

What is the usually minimum flow in gallons per minute, which is considered to be a master stream?

A

350

49
Q

What does PSIG mean?

A

Pounds Per Square Inch Gauge

50
Q

The weight of one cubic foot of ordinary fresh water is most nearly?

A

62.5 pounds

51
Q

Head pressure is away to describe which caretific of a water supply?

A

Height of a water supply above the discharge orifice

52
Q

A hydrant drain hole is located just?

A

Above the main valve in a dry barrel hydrant

53
Q

When the attack lines are shut down in a relay pumping situation, the attack pumper operator must?

A

Open the dump line and take the pump out of gear

54
Q

1 foot of water over an area of one acker provides a water supply of 1,000 gallons per miniute for how many hours?

A

5 hours

Pumping Operations (2 decks)

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