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Tech test > Hydraulics Manual > Flashcards

Hydraulics Manual Flashcards

1
Q

One cubic foot contains (blank) inches

A

1728 cubic inches

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2
Q

One cubic foot contains (blank) water

A

7.5 gal

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3
Q

One cubic foot of water weighs

A

62.5 lbs

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4
Q

One gallon contains (blank) cubic inches

A

231 cubic inches

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5
Q

A column of water blank high exerts a pressure of 1 psi

A

2.304 feet

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6
Q

50 feet 1.75 inch hose contains gal

A

6.24

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7
Q

50 feet 1.88 hose contains gal

A

7.20

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8
Q

50 feet of 2.5 inch blank gal

A

12.74

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9
Q

50 feet of 3 inch

A

18.35

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10
Q

100ft 4 inch

A

65.25

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11
Q

100ft 5 inch gal

A

101.94 gal

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12
Q

Hand Line 1/2 tip THEORETICAL

A

53

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13
Q

Hand line 7/8 tip THEORETICAL

A

161

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14
Q

Hand Line 15/16 tip THEORETICAL

A

185

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15
Q

Hand Line 1 inch tip THEORETICAL

A

210

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16
Q

Hand Line 1 1/8 tip THEORETICAL

A

266

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17
Q

Hand Line 1 1/4 tip THEORETICAL

A

328

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18
Q

Hand Line 1/2 tip FIREGROUND

A

50

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19
Q

Hand Line 7/8 tip Fireground

A

150

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20
Q

Hand Line 1 inch tip Fireground

A

200

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21
Q

Hand Line 1 1/8 tip FIREGROUND

A

250

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22
Q

Hand Line 1 1/4 Fireground

A

325

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23
Q

Master Stream 1 1/4 THEORETICAL

A

415

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24
Q

Theoretical Master Stream 1 3/8

A

502

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25
Q

Theoretical Master Stream 1 1/2

A

598

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26
Q

Master Stream 1 3/4

A

814

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27
Q

Master Stream 2 inch Theoretical

A

1062

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28
Q

smooth Bore GPM FORMULA

A

29.7d2sqrtNP

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29
Q

2.5 Akron Nozzle gpms

A

125-250 gpm

30
Q

TFT Master Stream Fog nozzle flows

A

150-2000 gpms

31
Q

Decon shower flow pressure

A

270 GPMs 75 psi

32
Q

Piercing Nozzle gpms and pressure

A

125 gpms at 100 psi

33
Q

Cellar nozzle psi and GPMs cellar bigger than distributor

A

2.5. 350 gpms at 100 psi
1.88. 160 gpms at 100 psi

34
Q

Distributor nozzle GPMs and PSI

A

2.5 250 gpms at 100psi
1.88. 95 gpms at 50 psi

35
Q

Smooth Bore breakaway nozzle psi and gpms MASTER STREAM

A

1 3/8 500 at 110
1.5 600 at 110
1.75. 800 at 110
2. 1000 at 120

36
Q

TFT automatic Master stream nozzle

A

150 to 1250 GPMs
500 at 90
750 at 110
1000 at 120
1250 at 140

37
Q

Akron Adjustable Flow Master Stream Nozzle flows

A

500-1250 GPMs
500 at 100
750 at 110
1000at 130
1250 at 140

38
Q

True or False: Mercury monitor can be used with 4 inch

A

False
This is a shall not be

39
Q

Mercury Monitor Maximum inlet pressure

A

150 psi

40
Q

Combination Monitor with the smooth bore attachment flow ranges

A

500-1000 gpms

41
Q

Combination Monitor with fog nozzle attachment ranges

A

350 -1250 at 100 psi

42
Q

1st Principle of Friction Loss

A

All variables being the same, friction loss will vary directly with the length of hose or pipe.

43
Q

2nd Principle of Friction Loss

A

All variables being the same, the friction loss fairies approximately with the square of the increase in the velocity of the flow.

44
Q

3rd Principle of Friction Loss

A

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

45
Q

4th Principle of Friction loss

A

For any given flow velocity, friction loss is independent of pressure. the velocity of water through a hose line, not pressure, causes friction loss.

46
Q

Coefficient for :
1 inch
2 inch
3.5 inch
5 inch

A

150
8
0.34
0.08

47
Q

Js-10 gpms and Psi

A

100 gpms at 100 psi

48
Q

FFX county Eductor flow and psi
Include stipulations

A

95-125 gpms
200 psi at eductor
At least 50 ft from pump panel
And within 200 from nozzle
Elevation limit 5 feet above eductor

49
Q

Around the Pump system

A

The water is around the pump proportioner allows foam solution to flow from all discharges. The intake pressure should not exceed 10 psi.

50
Q

Husky Foam System

A

This system is an electronic direct injection foam system. Capable of injecting foam from 0.1 to 3% with a rate capacity of three GPM of foam concentrate at 150 PSI.

51
Q

All Fairfax County pumpers carry minimum of blank gallons of foam

A

40

52
Q

When operating from static water source with a 1500 GPM pumper, if the pump pressure is increased to 200 psi, the maximum flow decreases to blank GPM.

And if increases to 250psi the maximum flow decreases to what

A

1050

750

53
Q

What Is The Friction Loss For These Supply Lines
3 + 3 inch
4 + 3 inch
4 + 4 inch

A

0.2
0.09
0.05

54
Q

What is the formula for available water from fire hydrants 

A

(STATIC - RESIDUAL)/ Static) x 100

55
Q

When does the driver charge sprinkler systems?

A

When there is smoke or fire showing or upon confirmation of a working fire 

56
Q

If the FDC is a combination system, when do you charge the FDC? 

A

Combination systems should be considered as a standpipe and should be charged when arriving on scene 

57
Q

Ariel devices should be provided with their own supply pumper if possible, therefore what are two hose configurations that the Aerial can receive water?

A

One LDH or 2 x 3 inch supply lines

58
Q

Charge AERIAL lines on orders of the

A

Truck OIC and Truck Driver
*Command can tell you to get the Master stream in service for defense but ultimately the driver or officer says when to actually charge the PIPE

59
Q

CAFS FOR FIRE ATTACK

A

2/3 water 1/3 Air
Foam application rate of 0.3%

60
Q

CAFS FOR OVERHAUL AND EXPOSURE

A

2/3 AIR
1/3 WATER
FOAM APPLICATION RATE 0.5%

61
Q

CAFS AIR COMPRESSOR RUN TIME

A

2 hours

62
Q

Smooth bore 15/16 vs gated butt for CAFS

A

Smooth bore fire ATTACK
GATED BUTT FOR OVERHAUL

63
Q

CAFS DISADVANTAGE OF CHARGED LINE

A

Must leave cracked open at all times to prevent buildup of pressure

64
Q

CAFS MAX LENGTH OF HOSELINE

A

250 ft

65
Q

Smooth Bore Nozzle Reaction

A

1.57d2NP

66
Q

Fog Nozzle Raction

A

0.0505QsqrtNP

67
Q

Side intake maximum flows

A

1750

68
Q

Rear intake max flows

A

1500-1750

69
Q

Front Intake Max flows

A

900

70
Q

Any time the incoming pressure exceeds _____, the pump shall be operated in pump gear

A

50psi

Tech test (20 decks)

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