Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Pumping book > Ch.9 > Flashcards

Ch.9 Flashcards

1
Q

Most common actuators for ball type valves are either ___________ or _______ handles?

A

Push pull handles
Quarters turn handles

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Tanks greater than 1000 gallons must be provided with at least______ inch tank full line? 

A

2 inch

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

A pump that consists of two gears that rotate in a tightly meshed pattern inside a watertight case?

A

Rotary gear pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

According to NFPA 1901 pumpers with capacities of 500 GPM should have piping capable of flowing_______ gpm? 

A

250gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

__________ _________ pumps Are constructed with movable elements that automatically compensate for wear, maintaining a tighter fit with closer clearances as the pump is used?

A

Rotary vane pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Pumps rated less than______ gpm are required to have only one 2 1/2” discharge ?

A

750 gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

This gauge is usually calibrated from ___ to ___ psi of positive pressure and from __ to __ inches of mercury on the negative side?

A

0 to 600 psi
0 to 30 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

It is generally recommended that the intake relief valves be set to open when the intake pressure rises more than_____ psi above the operating pressure?

A

10 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The process of switching between pressure and volume is sometimes referred to as?

A

Changeover

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

All valves should be designed and maintain so that they are easily operable at pressures of up to ____ psi? 

A

250psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

NFPA 1901 requires that all intakes or discharges that are____ Inches or greater be equipped with slow acting valve controls, prevents open to close in less than____ seconds 

A

3 inches
3 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Automatic valve that permits liquid to flow in only One Direction? 

A

Check valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What seals are the most common type in use today?

A

Mechanical seals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Self priming pump that utilizes a piston or interlocking rotors to move a given amount of fluid through the pump chamber with each stroke of the piston or rotation of the rotors? 

A

Positive displacement pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

The electric governor also features cavitation protection by returning the engine to idle went into pressure drops below______ psi ?

A

30 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Many power operated transfer valves operate at pressures as a high as ____ psi?

A

200 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Pumps rates for _____ gpm or greater must be equipped with at least 2 , two in half discharges ?

A

750gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Pumps rated greater than _______ gpm capacity may require more than one large intake connection at each location ?

A

1500 gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Front mount pumps have capacities of up to ____ gpm?

A

1250gpm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Early pumps used by the fire service were ________________ pumps?

A

Hand operated piston pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

These pumps are “constant flow machines “ in that they produce the same flow at a given speed regardless of discharge pressure?

A

Positive displacement pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Although no longer used as high capacity pumps , some are still in service for high pressure stream fire fighting , these multi cylinder ,PTO driven pumps can provide pressures up to 1000 psi for high pressure fog lines

A

Piston pumps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Most of the rotary pumps in use today are either ________ or ________ construction?

A

Rotary gear or rotary vane

24
Q

To prevent damage to the casings , most rotary gear pumps feature gears made of ________ or another soft metal , while a strong alloy such as cast iron is used for the pump casing?

25
This is one of the most common types of pumps used to prime a centrifugal fire pump?
Rotary vane pump
26
________ pumps are prone to failure if not exercised regularly, these pumps should be operated during routine apparatus checks ?
Rotary pumps
27
This pump is classified as a non positive displacement pump as it does not pump a definite amount of water with each revolution?
Centrifugal pump
28
A _________ pump is unable to pump air and is not self priming ?
Centrifugal pump
29
What are the two basic centrifugal pumps used by the fire service ?
Single stage and multistage
30
Pumps used in the fire service constructed with a single impeller are referred to as ______________pumps?
Single stage centrifugal pumps
31
_____________ centrifugal pumps have an impeller for each stage mounted in a single housing?
Multistage
32
I’m multistage centrifugal pumps , each of the impellers is capable of delivering it’s rated pressure while flowing ____% of its rated capacity ?
50%
33
If there is any question as to the correct position for the transfer valve , it is best to operate in _____ rather than _____ mode?
Volume mode Pressure mode
34
In parallel mode (volume) the pump will be capable of supplying 100% of its rated capacity at ___psi at 10 feet of lift and 20 feet of suction hose while drafting?
150psi
35
Many power operated transfer valves operate at pressures as high as _____ psi?
200 psi
36
The most common type of seal packing material is composed of ______ impregnated with ________ or ______?
Rope fibers Graphite or lead
37
Packing rings are primarily used in ________ fire pumps?
Older
38
Heat develops by friction where the packing rings come into contact with the shaft, in order to overcome this a spacer known as a ________ or _______ is supplied with the packing to provide cooling?
Lantern or slinger ring
39
Pumps powered by gasoline or Diesel engines independently of the vehicle drive engine are examples of ___________ pumps ?
Auxiliary
40
____ driven fire pumps are the most common to initial attack , wildland , or mobile water supply applications ?
PTO
41
One major disadvantage of the front mount pump is the susceptibility of the pump and _________ freezing in cold weather due to their exposed position?
Gauges
42
Valve life may be extended by ________ the pump of debris ?
Flushing
43
The most common type of valve is the _______ valve that permits the full flow of water through a line with minimum friction loss?
Ball type valve
44
The _________ lever usually has a flat handle that can be used to lock the valve in any positions by a 90 degree twist of the handle ?
Push -pull lever
45
_________ valves are most commonly operated by quarter turn handles ?
Butterfly valves
46
______ must be supplied at the lowest point on the pump and at the lowest point of each line connecting to it?
Drains
47
Although there are several types available , the most common relief valve uses a ________- ___________ pilot valve ?
Spring - controlled
48
A __________ is needed to create the vacuum that makes drafting possible ?
Priming device
49
Primers fall into several categories including _____________,________, ________ and ____________?
Positive displacement Exhaust Vacuum And air primers
50
Most modern pumpers use ____________________ primers ?
Positive displacement
51
Most new pumpers are equipped with ________ primers ?
Oil less
52
_________ primers are generally found on skid -mounted pumps or older fire apparatus?
Exhaust primers
53
____ primers are becoming an increasingly more popular method of priming pumps on modern fire apparatus?
Air primers
54
Nfpa 1901 allows __________ readouts to substitute for individual pressure discharge gauges ?
Flowmeter
55
There are several types of throttles available, including a ___________ (also called a vernier) that can be turned clockwise or counterclockwise to achieve the required pressure?
Throttle knob

Pumping book (20 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions