Pump ops Test 1 Questions with Correct
Answers
Pump discharge pressure equation
NP + FL + A + E
PSI for all fog nozzles
100 psi
PSI for all smooth bore handline
50 psi
PSI for a master stream
80 psi
1 3/4 hose friction loss (hand method) 100 gpm
12 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 125 gpm
24 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 150 gpm
36 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 175 gpm
48 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 200 gpm
60 psi per 100 ft hose
, How do you calculate FL for 2 1/2 inch hose?
Take GPM, drop the last number and subtract 10.
2 1/2 in hose FL for 200 gpm
10 psi per 100 ft hose
2 1/2 in hose FL for 300 gpm
20 psi per 100 ft hose
2 1/2 in hose FL for 550 gpm
45 psi per 100 ft hose
What is the method to determine the FL for 3 in hose?
(GPM/100) squared
3 in hose FL when flowing 400 gpm
16 psi per 100 ft
3 in hose FL when flowing 500 gpm
25 psi per 100 ft
What is the method to calculate FL using 4 in hose?
(GPM/100) squared, divide by 5
4 in hose FL when flowing 500 gpm
5 psi per 100 ft
4 in hose FL when flowing 700 gpm
10 psi per 100 ft
Answers
Pump discharge pressure equation
NP + FL + A + E
PSI for all fog nozzles
100 psi
PSI for all smooth bore handline
50 psi
PSI for a master stream
80 psi
1 3/4 hose friction loss (hand method) 100 gpm
12 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 125 gpm
24 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 150 gpm
36 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 175 gpm
48 psi per 100 ft hose
1 3/4 hose friction loss (hand method) 200 gpm
60 psi per 100 ft hose
, How do you calculate FL for 2 1/2 inch hose?
Take GPM, drop the last number and subtract 10.
2 1/2 in hose FL for 200 gpm
10 psi per 100 ft hose
2 1/2 in hose FL for 300 gpm
20 psi per 100 ft hose
2 1/2 in hose FL for 550 gpm
45 psi per 100 ft hose
What is the method to determine the FL for 3 in hose?
(GPM/100) squared
3 in hose FL when flowing 400 gpm
16 psi per 100 ft
3 in hose FL when flowing 500 gpm
25 psi per 100 ft
What is the method to calculate FL using 4 in hose?
(GPM/100) squared, divide by 5
4 in hose FL when flowing 500 gpm
5 psi per 100 ft
4 in hose FL when flowing 700 gpm
10 psi per 100 ft