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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

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

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

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

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

65
Q

Smooth Bore Nozzle Reaction

66
Q

Fog Nozzle Raction

A

0.0505QsqrtNP

67
Q

Side intake maximum flows

68
Q

Rear intake max flows

69
Q

Front Intake Max flows

70
Q

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

Tech test (20 decks)

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