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Posted: October 27th, 2022
Fire Protection Hydraulics and Water Supply
Fire Protection Hydraulics and Water Supply
1. A pump operator calculated 8 psi of friction loss for every 100 feet of hose. What would be the total friction loss for 350 feet of hose?
24
28
16
20
5 points
QUESTION 2
1. Using the predetermined coefficient chart, what is the coefficient for a 3-inch hose with 3-inch couplings?
0.67
0.05
0.8
0.1
5 points
QUESTION 3
1. While solving the friction-loss formula FL = C Q2 L, which of the following accurately reflects how to solve for C Q2 L, with 200 feet 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 points
QUESTION 4
1. In the friction loss formula FL = C Q2 L, L represents the value for what?
Line diameter in inches multiplied by 100
Line diameter in inches divided by 100
Length of hose in feet divided by 100
Length of hose in feet multiplied by 100
5 points
QUESTION 5
1. When pumping a standpipe, what is general rule PDP that should not be exceeded unless the system is designed to handle a greater pressure if needed?
150 psi
175 psi
200 psi
225 psi
5 points
QUESTION 6
1. What is the standard nozzle pressure to a master stream fog nozzle?
100
150
80
50
5 points
QUESTION 7
1. In the friction loss formula FL = C Q2 L, FL represents the value for what?
Fluid loss
Friction loss
Flux loss
Flow loss
5 points
QUESTION 8
1. What is the friction loss for all master stream appliances?
0
10
25
35
5 points
QUESTION 9
1. While solving the Condensed Q friction-loss formula for 5-inch hose, which of the following accurately reflects how to solve for Q2 when flowing 1000 gpm?
(1000/100)2
2(1000/100)2
(1000/10)2
2(10/100)2
5 points
QUESTION 10
1. Handline smooth-bore nozzles are commonly rated at what nozzle pressure?
45 psi
80 psi
50 psi
100 psi
5 points
QUESTION 11
1. Calculate the total friction loss by using the following details:
3-inch hose with 2.5-inch couplings
Volume = 200 GPM
Hose Length = 300 feet
4.08
4.80
8.04
9.60
10 points
QUESTION 12
1. You are operating at a high-rise structure fire, and you are the pump operator of an engine company that is pumping directly to the tip of aerial apparatus that has a pre-piped waterway. Calculate the pump discharge pressure by using the following details:
5-inch hose
Volume = 500 GPM
Hose Length = 400 feet
Fog Nozzle at the Aerial Tip
Aerial Device Raised 100 feet
133
158
183
233
10 points
QUESTION 13
1. Calculate the total friction loss using the condensed Q method by using the following details (round to the nearest whole number):
5-inch hose
Volume = 800 GPM
Hose Length = 500 feet
Formula: Q2/15
4
12
21
64
10 points
QUESTION 14
1. Calculate the pump discharge pressure by using the following details:
2.5-inch hose
Volume = 300 GPM
Hose Length = 200 feet
Nozzle Pressure = 50
68
70
86
90
QUESTION 15
1. Calculate the total friction loss with the following details:
1.75-inch hose
Volume = 150 GPM
Hose Length = 200 feet
50
69.75
75.69
108
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