Hydro

Question 1

1 Cubic FT
(Cubic inches)

Answer 1

1728 Cubic Inches

Question 2

1 Cubic Foot
(Gallons)

Answer 2

7.5

Question 3

1 Cubic Foot
(Pounds)

Answer 3

62.5 pounds

Question 4

1 Gallon
(Cubic inches)

Answer 4

231 Cubic Inches

Question 5

1 Gallon of Water
(Weight LBS)

Answer 5

8.33 LBS

Question 6

1 FT Column of Water
(Exerts a pressure of __ psi @ base)

Answer 6

0.434 psi

Question 7

Column of 2.304 FT high exerts a pressure of ___ psi at its base

Answer 7

1 psi

Question 8

50 FT of 1 3/4” hose contains
(Gallons)

Answer 8

6.24 gallons

Question 9

50 FT Length of 1.88 hose contains
(gallons)

Answer 9

7.20 gallons

Question 10

50’ of 2.5” hose
(Gallons)

Answer 10

12.74 gallons

Question 11

50’ of 3” hose
(Gallons)

Answer 11

18.35

Question 12

100’ of 4” hose
(Gallons)

Answer 12

65.25 gallons

Question 13

100’ of 5” hose
(Gallons)

Answer 13

101.94 gallons

Question 14

50 psi nozzle can be increased to ___psi for higher flow rate

Answer 14

65 psi

Question 15

SB nozzles are 80psi, but can be increased to _____psi

Answer 15

100 psi

Question 16

Centrifugal Pumps

Answer 16

Centrifugal pumps - 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.

Question 17

Discharge

Answer 17

Discharge the quantity of water issuing from an opening expressed in gpm.

Question 18

Discharge Pressure

Answer 18

Discharge pressure actual velocity pressure of the water ( measured in psi) for an individual hose line.

Question 19

Discharge Velocity

Answer 19

Discharge velocity the rate at which water travels from an orifice and can be measured using a pitot gauge.

Question 20

Gutter Line

Answer 20

Gutter line-line run directly from a hydrant to an attack pumper .

Question 21

Head Pressure

Answer 21

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

Question 22

Rectangular Shaped Containers
(Formula)

Answer 22

L’ x W’ x D’ x 7.5

Question 23

Smooth Bore Nozzle Reaction

Answer 23

1.57 x d2 x NP

Question 24

Smooth Bore Nozzle Reaction

Answer 24

1.57 x d2 x NP

Question 25

Fog Stream Nozzle Reaction

Answer 25

.0505 x Q x square root of NP

Question 26

ADJUSTABLE GALLONAGE NOZZLE

Answer 26

12 to 60 GPM @100psi

Question 27

22 Red Fog Nozzle

Answer 27

22GPM @75psi

Question 28

Piercing/Penetrating Nozzle

Answer 28

125GPM @ 100psi

Question 29

Distributor Nozzle
- 2 1/2
- 1 1/2

Answer 29

250 GPM @ 100 psi
95 GPM @ 50 psi

Question 30

Cellar Nozzle
-2 1/2
-1 1/2

Answer 30

• 350 GPM @100 psi
• 160 GPM @ 100 psi

Question 31

TFT AUTOMATIC FLOW AND PRESSURES

Answer 31

500 GPM ———-90 psi
750 GPM———110 psi
1000 GPM —— 120 psi
1250 GPM——- 140 psi

Question 32

Akron Adjustable Flow Nozzle

Answer 32

500 GPM——— 100 psi
750 GPM———-110 psi
1000 GPM——-130 psi
1250 GPM——140 psi

Question 33

Elevation Pressure (Theoretical)

Answer 33

4.43 per 10 feet

Question 34

JS-10 Nozzle

Answer 34

100 GPM @ 100psi

Question 35

Foam Eductor Flows

Answer 35

95 to 125 GPM

Question 36

4” Starting Pressure

Answer 36

50 psi

Question 37

3” Starting Pressure

Answer 37

100 psi

Question 38

4” and 3” Starting Pressure

Answer 38

100 psi

Question 39

Dual 4” coefficient

Answer 39

.05

Question 40

MAXIMUM EXPECTED FLOW (Drafting)
- Side Intake

Answer 40

1750 GPM

Question 41

MAXIMUM EXPECTED FLOW (Drafting)
- Rear Intake

Answer 41

1500-1750 GPM

Question 42

MAXIMUM EXPECTED FLOW Front (Drafting)

Answer 42

900 GPM