Posted: October 27th, 2022

Fire Protection Hydraulics and Water Supply

Fire Protection Hydraulics and Water Supply
Fire Protection Hydraulics and Water Supply
1. A pump operator calculated eight psi of friction loss for each 100 toes of hose. What can be the overall friction loss for 350 toes of hose?

24

28

16

20
5 factors
QUESTION 2
1. Utilizing the predetermined coefficient chart, what’s the coefficient for a Three-inch hose with Three-inch couplings?

zero.67

zero.05

zero.eight

zero.1
5 factors
QUESTION Three
1. Whereas fixing the friction-loss formulation FL = C Q2 L, which of the next precisely displays tips on how to resolve for C Q2 L, with 200 toes of 1.75-inch hose flowing at 150 gallons a minute?

15.5(200/100)2(150/100)

15.5(150)2

15.5/(150)2

15.5(150/100)2(200/100)
5 factors
QUESTION four
1. Within the friction loss formulation FL = C Q2 L, L represents the worth for what?

Line diameter in inches multiplied by 100

Line diameter in inches divided by 100

Size of hose in toes divided by 100

Size of hose in toes multiplied by 100
5 factors
QUESTION 5
1. When pumping a standpipe, what’s common rule PDP that shouldn’t be exceeded until the system is designed to deal with a better stress if wanted?

150 psi

175 psi

200 psi

225 psi
5 factors
QUESTION 6
1. What’s the commonplace nozzle stress to a grasp stream fog nozzle?

100

150

80

50
5 factors
QUESTION 7
1. Within the friction loss formulation FL = C Q2 L, FL represents the worth for what?

Fluid loss

Friction loss

Flux loss

Circulation loss
5 factors
QUESTION eight
1. What’s the friction loss for all grasp stream home equipment?

zero

10

25

35
5 factors
QUESTION 9
1. Whereas fixing the Condensed Q friction-loss formulation for 5-inch hose, which of the next precisely displays tips on how to resolve for Q2 when flowing 1000 gpm?

(1000/100)2

2(1000/100)2

(1000/10)2

2(10/100)2
5 factors
QUESTION 10
1. Handline smooth-bore nozzles are generally rated at what nozzle stress?

45 psi

80 psi

50 psi

100 psi
5 factors
QUESTION 11
1. Calculate the overall friction loss by utilizing the next particulars:

Three-inch hose with 2.5-inch couplings
Quantity = 200 GPM
Hose Size = 300 toes

four.08

four.80

eight.04

9.60
10 factors
QUESTION 12
1. You’re working at a high-rise construction hearth, and you’re the pump operator of an engine firm that’s pumping on to the tip of aerial equipment that has a pre-piped waterway. Calculate the pump discharge stress by utilizing the next particulars:

5-inch hose
Quantity = 500 GPM
Hose Size = 400 toes
Fog Nozzle on the Aerial Tip
Aerial Machine Raised 100 toes

133

158

183

233
10 factors
QUESTION 13
1. Calculate the overall friction loss utilizing the condensed Q technique by utilizing the next particulars (spherical to the closest complete quantity):

5-inch hose
Quantity = 800 GPM
Hose Size = 500 toes
System: Q2/15

four

12

21

64
10 factors
QUESTION 14
1. Calculate the pump discharge stress by utilizing the next particulars:

2.5-inch hose
Quantity = 300 GPM
Hose Size = 200 toes
Nozzle Stress = 50

68

70

86

90

QUESTION 15
1. Calculate the overall friction loss with the next particulars:

1.75-inch hose
Quantity = 150 GPM
Hose Size = 200 toes

50

69.75

75.69

108

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