Pump Ops 54 Additional Questions

Question 1

Flow pressure from a hydrate is measured using a?

Answer 1

Pito Tube

Question 2

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

Answer 2

Combination

Question 3

The purpose of positive pressure ventilation is to?

Answer 3

Create greater pressure inside a building than outside the building

Question 4

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

Answer 4

350 gpm

Question 5

A Sodium fire is what class?

Answer 5

Class “D”

Question 6

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

Answer 6

Panel is removed and a latch is turned from the inside

Question 7

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

Answer 7

The pike end of a pike headed axe

Question 8

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

Answer 8

Convection

Question 9

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

Answer 9

Exterior

Question 10

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

Answer 10

Protective water film on the exposed surface

Question 11

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

Answer 11

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

Question 12

Smoke that indicates a backdraft or smoke explosion condition is?

Answer 12

Black smoke becoming dense grey-Yellow

Question 13

Which is the primary advantage of a forward hose lay?

Answer 13

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

Question 14

The greatest disadvantage to using forced ventilation is that?

Answer 14

The fire may intensify and spread

Question 15

The contents of the room simultaneously reach their ignition temperature

Answer 15

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

Question 16

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

Answer 16

250gpm

Question 17

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

Answer 17

Eye

Question 18

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

Answer 18

Master Intake

Question 19

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

Answer 19

22” mercury

Question 20

The injector plunger in a diesel engine id lubricated by?

Answer 20

Fuel

Question 21

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

Answer 21

Rotary Vane

Question 22

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

Answer 22

175 psi

Question 23

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

Answer 23

GPM goes down as the PSI goes up

Question 24

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

Answer 24

The pressure output of the pump will tend to increase

Question 25

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

Answer 25

Breaks the siphon of the oil into the pump after use

Question 26

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?

Answer 26

Volume

Question 27

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

Answer 27

Will increase four times if all factors remain constant

Question 28

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

Answer 28

Paddle Wheel (DO pg 252)

Question 29

Cavitation most often occurs?

Answer 29

During drafting operations

Question 30

The top surface of a piston is called?

Answer 30

Head

Question 31

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

Answer 31

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

Question 32

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

Answer 32

Annually

Question 33

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

Answer 33

Dead axle

Question 34

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

Answer 34

7

Question 35

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

Answer 35

Alternator

Question 36

Which is a positive displacement pump?

Answer 36

Priming Pump

Question 37

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

Answer 37

Driven gear

Question 38

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

Answer 38

Relief valve

Question 39

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

Answer 39

Impeller

Question 40

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

Answer 40

150

Question 41

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

Answer 41

Sand

Question 42

The volute in a centrifugal pump enables the water to?

Answer 42

Build pressure before leaving the pump

Question 43

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

Answer 43

Prevents the formation of kinks in the hose

Question 44

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

Answer 44

1,700

Question 45

At sea level the atmosphere exhausted a pressure of?

Answer 45

14.7psi

Question 46

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

Answer 46

Friction Loss

Question 47

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

Answer 47

Nozzle Reaction

Question 48

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

Answer 48

350

Question 49

What does PSIG mean?

Answer 49

Pounds Per Square Inch Gauge

Question 50

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

Answer 50

62.5 pounds

Question 51

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

Answer 51

Height of a water supply above the discharge orifice

Question 52

A hydrant drain hole is located just?

Answer 52

Above the main valve in a dry barrel hydrant

Question 53

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

Answer 53

Open the dump line and take the pump out of gear

Question 54

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

Answer 54

5 hours