Brainscape's Knowledge GenomeTM

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


See full index

Apperatus Tech Test > Hydraulics Manual > Flashcards

Hydraulics Manual Flashcards

1
Q

A column of water 1 foot high exerts how much pressure at its base

A

.434 psi

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

A column of water 2.304 feet in height exerts a pressure of what at its base

A

1 psi

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

Nozzle pressure for Handline smoothbore nozzle’s is 50 psi but can be increased to what for higher flow

A

65 psi

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

nozzle pressure for Master streams with Smoothbore Nozzles is 80 psi but can be increased to want to achieve higher flow

A

100 psi

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

Define 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
6
Q

Define head pressure

A

Water pressure due to elevation

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

Define residual pressure

A

Pressure remaining in a water system when water is flowing

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

Define velocity

A

The speed at which water passes a given point

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

 What formula is used to determine the volume for a rectangular or square shaped container

A

L x W x D x 7.5 gallons/cubic foot

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

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

A

3.14 x r^2 x L x 7.5 gallons/cubic foot

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

What is the theoretical calculated flow of a 15/16 Smoothbore nozzle

A

185 gpm

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

What is the fireground calculation for flow of a 15/16 smoothbore nozzle

A

185 gpm

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

What is the theoretical calculation of flow for a 1 inch smoothbore nozzle

A

210 gpm

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

What is a Fire Ground calculation of flow for a 1 inch smoothbore nozzle

A

200 gpm

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

What is the theoretical calculation of flow for a 1 1/8 inch smoothbore nozzle

A

266 gpm

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

What is a Fire Ground calculation of flow for a 1 1/8 inch smoothbore nozzle

A

250 gpm

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

What is a Theoretical calculation of flow for a 1 1/4” smoothbore nozzle

A

328

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

what is the fireground calculation of flow for a 1 1/4” Smoothbore nozzle

A

325

19
Q

What is the theoretical calculation of flow for 1 3/4” smoothbore nozzle

A

814

20
Q

What is the fire ground calculation of flow for a 1 3/4” smoothbore nozzle at 80 psi

A

800

21
Q

What is the range of flow for a 1 inch adjustable gallonage fog nozzle

A

12-60

22
Q

What is the range in flow for the 2 1/2” Akron adjustable flow fog nozzle

A

125-250

23
Q

What is the flow and pressure of a Decon shower

A

270 gpm
75 psi

24
Q

What is the flow and pressure of a piercing nozzle

A

125 gpm
100 psi

25
Q

What is the flow and pressure for a 2 1/2” distributor nozzle

A

250 gpm
100 psi

26
Q

What is the flow and pressure for a 1 1/2” distributor nozzle

A

95 gpm
50 psi

27
Q

What is the flow and pressure for a 2 1/2 inch seller nozzle

A

350 gpm
100 psi

28
Q

What is the flow and pressure for a 11/2” cellar nozzle

A

160 gpm
100 psi

29
Q

What nozzle pressure should be given to a fixed monitor smoothbore breakaway nozzle

A

110 psi
120 psi for 2” at 1000 gpm

30
Q

What nozzle pressure shall be given to the combination monitor smoothbore nozzle which may be attached/ detached from the pumper

A

80 psi

31
Q

What is the coefficient for 1” hose

A

150

32
Q

What is the rating of a national foam JS 10 air aspirating nozzle

A

100 gpm at 100 psi
variable spray or straight stream

Can be used with all low expansion foam concentrates

33
Q

In a relay the maximum amount of water being delivered to the fire scene is limited by what two factors

A

Water source

pump capacity of smallest pumper and relay

34
Q

What is the maximum flow from a side intake

A

1750 gpm

35
Q

What is the maximum flow of a rear intake

A

1500-1750 gpm

36
Q

What is the maximum flow of a front intake

A

900 gpm

37
Q

Anytime incoming pressure from a water source exceeds ——- psi the pump shall be operated in pump gear to avoid damage to the pump gears and auto lube system

A

50 psi

38
Q

how does A Pressure Governor compensate for overpressure under pressure on the discharge side of the pump

A

By increasing or decreasing the engine rpm is necessary to maintain the set pump discharge pressure

39
Q

If water supplies lost the driver operator must do what ?

A

Open tank to pump valve utilizing tank water the notify interior crew in command they’re operating off tank water

40
Q

coefficient for dual 3” hose with 2.5” coupling

A

.2

41
Q

coefficient for dual 4” hose

A

.05

42
Q

coefficient for 1-4” & 1-3”

A

.09

43
Q

weight cubic foot of water

A

62.5 lbs

44
Q

remember when calculating EP for buildings, multiply by 4.34 NOT .434

A

remember when calculating EP for buildings, multiply by 4.34 NOT .434

Apperatus Tech Test (44 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions