Brainscape's Knowledge GenomeTM

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


See full index

Apparatus Test > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

How many cubic inches are in a cubic foot?

A

1728 cubic inches

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

How many gallons are in one cubic foot?

A

7.5 gallons

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

How much does one cubic foot of fresh water weigh?

A

62.5 lbs

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

How many cubic inches are in one gallon?

A

231 cubic inches

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

How much does a gallon of fresh water weigh?

A

8.33 lbs

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

How much pressure does a column of water 1’ high exert at its base?

A

0.434 psi

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

How much pressure does a column of water 2.304’ high exert at its base?

A

1 psi

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

How much water does a 50’ length of 1.75” hose contain?

A

6.24 gallons

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

Formula for Friction Loss

A

FL= C x Q^2 x L

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

Formula for Total Pressure Loss

A

TPL = FL + AL +/- EL

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

Formula for Pump Discharge Pressure

A

PDP= NP (or RP) + TPL

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

Coefficient for a 1 3/4” handline

A

10

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

Coefficient for a 2 1/2” handline

A

2

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

Coefficient for a 3” handline

A

0.8

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

Coefficient for a 4” handline

A

0.2

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

Coefficient for a 4” + 3” hose line

A

0.09

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

Coefficient for 2 4” hand lines

A

0.05

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

Coefficient for 2 3” hand lines

A

0.2

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

Theoretical and Fire ground Flow for a 15/16” tip handline nozzle?

A

185 GPM

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

Theoretical Flow for a 1 1/8” tip handline?

A

266 GPM

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

Theoretical Flow for 1 1/4” tip handline?

A

328 GPM

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

TheoreticalFlow for a 1 3/8” tip master stream?

A

502 GPM

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

Theoretical Flow for a 1 1/2” tip master stream?

A

598 GPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

Theoretical Flow for a 1 3/4” tip master stream?

A

814 GMP

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

Theoretical Flow for a 2” tip master stream?

A

1062 GPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

Appliance loss for appliances <350 GPM

A

0 PSI

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

How many gallons does a 50’ length of 1.88” hose contain?

A

7.20 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

How many gallons does a 50’ length of 2.5” hose contain?

A

12.74 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

How many gallons does a 50’ length of 3” hose contain?

A

18.35 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

How many gallons does a 100’ length of 4” hose contain?

A

65.25 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

How many gallons does a 100’ length of 5” hose contain?

A

101.94 gallons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
32
Q

What is the nozzle pressure for hand lines with smooth bore nozzles?

A

50psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
33
Q

What is the nozzle pressure for master streams with a smooth bore nozzle?

A

80psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
34
Q

What max pressure can hand lines with smooth bore nozzles be increased to to achieve higher flows?

A

65 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
35
Q

What max pressure can master streams with smooth bore nozzles be increased to in order to achieve higher flows?

A

100 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
36
Q

What is the nozzle pressure for an Akron assault nozzle?

A

50 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
37
Q

What is the flow of the fog nozzle on the Akron assault nozzle?

A

175 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
38
Q

What is the flor of the 15/16” slug of the Akron assault nozzle?

A

185 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
39
Q

What is the nozzle pressure for all fog nozzles besides the Akron assault nozzle?

A

100 psi (unless indicated otherwise)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
40
Q

Appliance

A

The generic term applied to any nozzle, Wye, Siamese, deluge monitor or any other piece of hardware used in conjunction with fire hose for the purpose of delivering water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
41
Q

Attack pumper

A

Any pumping apparatus that is supplying water directly to attack lines

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
42
Q

Centrifugal pump

A

Pumps used on all modern fire apparatus. This type of pump takes advantage of incoming pressure. Water enters the eye of the pump then travels through one or more impellers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
43
Q

Discharge

A

The quantity of water issuing from an opening expressed in GPM

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
44
Q

Discharge pressure

A

Actual velocity pressure of the water measured in psi for an individual hose line

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
45
Q

Discharge velocity

A

The rate at which water travels from the office and can be measured using a pitot gauge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
46
Q

Elevated stream

A

Master stream nozzle attached to or being operated from an aerial ladder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
47
Q

Elevation pressure

A

Gain or loss of pressure in a hose line or system due to a change in elevation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
48
Q

Flow pressure

A

Pressure created by the velocity of water coming from a discharge opening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
49
Q

Friction loss

A

The loss of pressure created by the turbulence of water moving against the interior walls, couplings, and connections of the hose or pipe

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
50
Q

Gutter line

A

Line that runs directly from a hydrant to an attack pumper

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
51
Q

Head pressure

A

Water pressure due to elevation. For each foot of elevation above the pump the pressure increases by 0.434 psi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
52
Q

Ladder pipe

A

Master stream nozzle mounted to the fly of an aerial ladder

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
53
Q

Master stream

A

Any variety of heavy caliber water streams delivering 350 gallons or more

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
54
Q

Normal operating pressure

A

The pressure found in a water distribution system during normal consumption demands, at any moment in time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
55
Q

Nozzle pressure

A

The velocity pressure at which water is discharge from the nozzle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
56
Q

Nozzle reaction

A

Counterforce directed against a person or device holding a nozzle by the velocity of water being discharged

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
57
Q

Primer pump

A

Small positive replacement pump used to evacuate air from a centrifugal pump housing allowing the pump to receive water

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
58
Q

Pumper discharge pressure

A

Actual velocity pressure of water measured in psi as it leaves the pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
59
Q

Relay pumper

A

A pumper that is between the source pumper and attack pumper. This pumper receives water from the direction of the source pumper and boost pressure towards the attack pumper

60
Q

Residual pressure

A

Pressure remaining in a water system when water is flowing

61
Q

Siamese

A

An appliance that combines two or more hose lines into one

62
Q

Static pressure

A

The pressure exerted by water at rest in a confined vessel available to force water through pipe, fittings, fire hose, and adapters

63
Q

Supply pumper/source pumper

A

The pumper connected to the water supply at the beginning of a real operation

64
Q

Total pressure loss

A

The total amount of pressure loss in a hose assembly due to friction loss in the hose and appliances, elevation pressure, or any other factors

65
Q

Velocity

A

The speed at which water passes a given point

66
Q

Water hammer

A

The force created by the rapid deceleration of water. Generally occurs from opening or closing a valve to quickly. Damage to pumps, plumbing, and hose lines may occur

67
Q

Wye

A

An appliance that breaks one hose line into two or more hose lines with one female and two or more male outlets, usually gated

68
Q

What is the formula for determining volume for rectangular or square shaped container?

A

Length x Width x Height x 7.5 (Number of gallons in a cubic foot of water)

69
Q

What is the formula to determine the volume of a cylinder pipe or hose in gallons?

A

Gallons= TTr^2 x Height x 7.5

70
Q

What is the formula for determining the flow from a smoothbore nozzle when the nozzle pressure is known?

A

gpm= 29.7 x d^2 x square root of NP

71
Q

What is the mathematical constant use derived for a round opening?

72
Q

What is the fire ground flow for a hand line at 50 psi with a tip of 1/2”?

73
Q

What is the fire ground flow for a hand line at 50 psi with a tip size of 7/8”?

74
Q

What is the flow for a hand line at 50 psi with a tip size of 15/16”?

75
Q

What is the flow for a handline with 1“ tip at 50 psi?

76
Q

What is the fire ground flow for a handline at 50 psi with a 1 1/8 inch tip?

77
Q

What is the flow for Handline at 50 psi with a 1 1/4” tip?

78
Q

What is the fire ground flow for a master stream at 80 PSI with a 1 1/4” tip?

79
Q

What is the fire ground flow for a master stream at 80 PSI with a 1 3/8” tip?

80
Q

What is the fire ground flow for a master stream at 80 PSI with a 1 1/2” tip?

81
Q

What is the fire ground flow for a master stream at 80 PSI with a 1 3/4” tip?

82
Q

What is the fire ground flow for a master stream at 80 PSI with a 2” tip?

83
Q

What is the flow of a 1 inch adjustable flow fog nozzle?

84
Q

What is the flow of the 11/2” Akron assault nozzle?

85
Q

What is the adjustable flow nozzle that can be set to deliver between 125 and 250 gpm ?

A

21/2” Akron Fog Nozzle

86
Q

What is the flow of the Akron Quick attack Mercury monitor?

87
Q

What is the operating range of master stream fog nozzles?

A

150-2000 gpm

88
Q

What is a booster reel?

A

A 150’ long, 1” line with an adjustable gallonage fog nozzle.

89
Q

What is the flow of a booster reel?

A

Between 12 and 60 gpm

90
Q

What is the nozzle pressure of the booster reel?

91
Q

What lengths does the 1 inch forestry hose come in?

A

50’ and 100’ sections

92
Q

When attached to a 1 inch forestry hose what is the flow of a 1 inch adjustable gallonage fog nozzle?

A

Between 12 and 60 gpm

93
Q

When attach to a 1 inch forestry hose the 22 gpm red fog nozzle can be used at what pressure?

94
Q

What pressure can the 1 inch adjustable gallonage fog nozzle be used at when attached to a 1 inch forestry hose?

95
Q

What is the flow of the Decon shower?

96
Q

At what pressure is a Decon shower operated at? What is the flow?

A

75 psi at 270 gpm

97
Q

What are piercing/penetrating nozzles?

A

Nozzles commonly used to apply water to areas that are otherwise inaccessible to water streams such as voids and attics

98
Q

What is the operating pressure of a piercing/penetrating nozzle?

99
Q

What is the flow of a piercing/penetrating nozzle?

100
Q

What is the flow of a 2 1/2” distributor nozzle operated at 100 psi?

101
Q

What is the flow of a 1 1/2” distributor nozzle operated at 50 psi?

102
Q

What is the flow of a 2 1/2” cellar nozzle operate at 100 psi?

103
Q

What is the flow of a 1 1/2” cellar nozzle operated at 100 psi?

104
Q

What are the three different types of monitors used in Fairfax County?

A

Fixed monitor, Portable monitor, combination monitor

105
Q

What is a fixed monitor?

A

Are monitors permanently attached to the pumper

106
Q

What is the Fire ground flow of an 1 3/8” smooth bore breakaway nozzle operated at 110 psi?

107
Q

What is the Fire ground flow of an 1 1/2” smooth bore breakaway nozzle operated at 110 psi?

108
Q

What is the Fire ground flow of an 1 3/4” smooth bore breakaway nozzle operated at 110 psi?

109
Q

What is the Fire ground flow of a 2” smooth bore breakaway nozzle operated at 120 psi?

110
Q

What is the flow of the task force tip automatic nozzle operating at 90 psi?

111
Q

What is the flow of the task force tip automatic nozzle operating at 110 psi?

112
Q

What is the flow of the task force tip automatic nozzle operating at 120 psi?

113
Q

What is the flow of the task force tip automatic nozzle operating at 140 psi?

114
Q

What is the flow of the Akron Adjustable Flow Nozzle operating at 100 psi?

115
Q

What is the flow of the Akron Adjustable Flow Nozzle operating at 110 psi?

116
Q

What is the flow of the Akron Adjustable Flow Nozzle operating at 130 psi?

117
Q

What is the flow of the Akron Adjustable Flow Nozzle operating at 140 psi?

118
Q

What is the flow of the Akron Quick-attack Mercury monitor?

A

500 GPM from either the fog or smooth bore nozzles

119
Q

What is the tip size of the smooth bore nozzle on the Akron Quick-attack Mercury monitor?

120
Q

What is the operating pressure of the smooth bore tip of the Akron Quick-attack Mercury monitor?

121
Q

What is the operating pressure of the fog nozzle on the Akron Quick-attack Mercury monitor?

122
Q

What size supply hose can be used with the Akron Quick-attack Mercury monitor?

A

3” or 2.5”

123
Q

What is the maximum inlet pressure for the Akron Quick-attack Mercury monitor?

124
Q

What is the appliance loss for the Akron Quick-attack Mercury monitor?

125
Q

What size is the inlet on the Akron Quick-attack Mercury monitor?

126
Q

What size is the outlet on the Akron Quick-attack Mercury monitor?

127
Q

What is the value of the ball valve shut off on the Akron Quick-attack Mercury monitor?

A

The ball valve enables firefighters to extend off the hose line off the monitor outlet if desired

128
Q

What is a combination monitor?

A

Are fixed to the pumper but can be detached and connected to a ground mount to be used as a portable monitor.

129
Q

What is the flow range of the smooth bore nozzles on combination monitors when operating at 80 psi?

A

500-1000 gpm

130
Q

What is the flow of the fog nozzle on combination monitors when operating at 100 psi?

A

350-1250 gpm

131
Q

What is the first principal that governs the friction loss in fire hose and piping?

A

All variables being the same friction loss will very directly with the length of hose or pipe. Doubling the length of hose doubles the friction loss.

132
Q

What is the second principal that governs the friction loss in fire hose and piping?

A

All variables being the same the friction loss varies approximately with the square of the increase in the velocity of the flow. If the flow rate is doubled the friction loss will be four times greater.

133
Q

What is the third principal that governs the friction loss in fire hose and piping?

A

When the flow remains constant the friction loss in a hose will decrease when the diameter of the hose is increased. Friction loss varies inversely to the fifth power as the diameter of the hose increases.

134
Q

What is the forth principal that governs the friction loss in fire hose and piping?

A

For any given flow, velocity friction loss is independent of pressure. The velocity of water through a hose line causes friction loss. The faster you move water the more friction loss that occurs

135
Q

What is one way that pump operators can overcome friction loss?

A

Increase the pump pressure thus providing the correct pressure at the nozzle.

136
Q

Coefficient for a 1” hose line

137
Q

Coefficient for a 2” hose line

138
Q

Coefficient for a 3 1/2” hose line

139
Q

Coefficient for a 5” hose line

140
Q

What is the coefficient for an 1 3/4” hose line per the IFSTA manual?

141
Q

What is the appliance loss in ladder pipes?

142
Q

What is the appliance loss for Master streams?

A

25 psi (except for the Mercury monitor)

143
Q

What is the appliance loss for standpipes?

144
Q

How much pressure will a 10’ column of water exert at its base?

145
Q

During normal operating conditions, what is the maximum safe pump discharge pressure?

146
Q

What is the flow and nozzle pressure of the JS-10 air aspirating nozzle?

A

100 gpm at 100 psi

Apparatus Test (8 decks)

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