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Driver Test > Hydraulics > Flashcards

Hydraulics Flashcards

1
Q

What is the theoretical flow for 1/2

A

53 gpm

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2
Q

What is the theoretical flow for 7/8

A

161 gpm

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3
Q

What is the theoretical flow for 15/16

A

185 gpm

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4
Q

What is the theoretical flow for 1 inch nozzle

A

210 gpm

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5
Q

What is the theoretical flow for 1 and 1/8

A

266 gpm

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6
Q

What is the theoretical flow for 1 and 1/4

A

328 gpm

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7
Q

What is the theoretical flow for 1 and 3/16

A

296 gpm

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8
Q

What is formula for finding like volumes?

A

(SP-RP)100/SP

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9
Q

What is the theoretical flow for a master stream that is 1 1/4

A

415 gpm

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10
Q

What is the theoretical flow for a master stream that is 1 3/8

A

502 gpm

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11
Q

What is the theoretical flow for a master stream that is 1 1/2

A

598 gpm

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12
Q

What is the theoretical flow for a master stream that is 1 3/4

A

814 gpm

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13
Q

What is the theoretical flow for a master stream that is 2in

A

1062

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14
Q

What is the formula for calculating smooth bore nozzle discharge?

A

Gpm= 29.7 x diameter squared x square root of nozzle pressure

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15
Q

What is the square root of 50?

A

7.07

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16
Q

What is the square root of 80?

A

8.94

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17
Q

What is the GPMs and pressure of the decontamination shower?

A

270 GMP at 75 PSI

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18
Q

How long is the booster reels usually?

A

150 feet

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19
Q

What is the flow and nozzle pressure of a booster reel?

A

12 to 60 GPMs at 100 PSI

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20
Q

What is the flow and nozzle pressure of the JS-10 nozzle

A

100 GPMs at 100 PSI

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21
Q

How far from the pump panel should the foam inductor be? How many feet should be past it?

A

50 feet with 200 feet past

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22
Q

What pressure should the foam inductor be pumped?

A

200 PSI at 95 to 125 gpm

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23
Q

What is the formula for determining nozzle reaction of a smooth bore?

A

1.57 X D2 x NP

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24
Q

What is the formula for determining nozzle reaction for a fog nozzle?

A

0.0505 x Q x square root of nozzle pressure

25
Q

What is the friction loss for a 50ft section of 1 3/4 with a fog nozzle?

A

15.3

26
Q

What is the friction loss for a 50ft section of 1 3/4 with a 15/16 nozzle?

A

17.1

27
Q

What is the friction loss for a 50ft section of 2 1/2 with a 1 3/16 nozzle?

A

8.76

28
Q

What is the friction loss for a 50ft section of 2 1/2 with a 1 1/8 nozzle?

A

7.08

29
Q

What is the friction loss for a 50ft section of 2 1/2 with a 1 1/4 nozzle?

A

10.75

30
Q

What is the weight of 1 cubic foot of water?

A

62.5 lbs

31
Q

How many GPMs can the red fog nozzle, commonly used with forestry hose, flow and with that pressure?

A

22 GPMs at 100 psi

32
Q

What pressure and do you flow a 2 1/2 distributed nozzle, and what is its flow?

A

250 gpm at 100 psi

33
Q

What pressure and do you flow a 1 1/2 distributed nozzle, and what is its flow?

A

95 gpm at 50 psi

34
Q

What pressure and do you flow a 1 1/2 cellar nozzle, and what is its flow?

A

160 gpm at 100 psi

35
Q

What pressure and do you flow a 2 1/2 cellar nozzle, and what is its flow?

A

350 gpm at 100 psi

36
Q

What is the mercury monitor maximum inlet pressure?

A

150 PSI

37
Q

What is the coefficient of 5 inch supply line

A

0.08

38
Q

What is the maximum safe PDP during normal operations

A

250 psi

39
Q

When Intake pressure is above what pressure should the pump be ran in pump gear

A

50 psi

Hydraulics manual pg 50

40
Q

What GPMs with the foam inductor flow at 200 psi?

A

95 to 125 GPMs

Hydraulics manual pg 31

41
Q

What is the coefficient for a 1 inch hose?

A

150

42
Q

What is the coefficient for a 1 3/4 inch hose?

A

10 (15.5 per IFSTA)

43
Q

What is the coefficient for a 2 inch hose?

A

8

44
Q

What is the coefficient for a 2 1/2 inch hose?

A

2

45
Q

What is the coefficient for a 3 inch hose?

A

0.8

46
Q

What is the coefficient for a 3 1/4 inch hose?

A

0.34

47
Q

What is the coefficient for a 4 inch hose?

A

0.2

48
Q

What is the coefficient for a 5 inch hose?

A

0.08

49
Q

What is the coefficient for a dual 3 inch hose?

A

0.2

50
Q

What is the coefficient for one 3 and one 4 inch hose?

A

0.09

51
Q

What is the coefficient for dual 4 inch hose?

A

0.05

52
Q

I’m a water relay what is your starting pressure for a 3 inch line

A

100 psi

53
Q

In a water relay what is your starting pressure for a 4 and a 3 inch line

A

100 psi

54
Q

A 50 foot section of 1.75 hose contains how many gallons of water?

A

6.24 gallons

55
Q

A 50 foot section of 1.88 hose contains how many gallons of water?

A

7.20 gallons

56
Q

A 50 foot section of 2.5 hose contains how many gallons of water?

A

12.74 gallons

57
Q

A 50 foot section of 3 inch hose contains how many gallons of water?

A

18.35 gallons

58
Q

A 100 foot section of 4 inch hose contains how many gallons of water?

A

65.25 gallons

59
Q

A 100 foot section of 5 inch hose contains how many gallons of water?

A

101.94 gallons

Driver Test (12 decks)

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