Fire Apparatus
Driver/Operator (IAFC/NFPA
3rd Edition) QUESTIONS AND
CORRECT DETAILED
ANSWERS (VERIFIED
ANSWERS)
Significance of
15.5
8
2
.8
.08 - answer Coefficients for
1 3/4"
2"
2 1/2"
3"
5"
Flow for smooth-bore tip @ 50 psi
1"
1 1/8"
1 1/4" - answer 200 gpm
250 gpm
300 gpm
,Fiction loss in all appliances when flow is 350 gpm or greater -
answer 10 psi
PDP formula - answer PDP = NP + FL
Elevation pressure formula for multistory buildings - answer EP = 5
psi x (number of stories - 1)
Fog nozzle reaction formula - answer NR = 0.0505 x gpm x sq root of
NP
The method that determines FL in 2 1/2" hose only and for flows of
160 gpm or greater - answer Subtract 10 method
Elevation pressure formula for a grade - answer EP = 0.5H
Pressure regulating valves are installed on standpipe risers where
static pressures exceed ... psi. - answer 175 psi
These valves are installed on standpipe risers where static
pressures exceed 175 psi - answer Pressure-regulating valves
NFPA ... , Standard for the Insulation of Sprinkler Systems - answer
13
GPM formula for smooth-bore nozzle - answer GPM = 29.7 x d
squared x sq root of NP
Flow for smooth-bore tip @ 80 psi
1 3/4"
, 2" - answer 800 gpm
1050 gpm
This method is a quick method for calculating FL per 100 ft in 3" and
5" hose line only - answer Condensed Q method
Smooth-bore nozzle reaction formula - answer NR = 1.57 x d
squared x NP
If the water tank has a certified capacity of less than 500 gallons
(2000 liters), the piping and valve arrangement must be capable of
delivering water to the pump at a minimum rate of ... gpm (1000 L/
min). - answer 250
What are the two types of centrifugal pumps? - answer Single stage
(one impeller) and Multistage (two or more impellers)
Per NFPA 1901, a 3000 GPM rated pump must deliver ... % of rate
capacity at 200 psi net pump pressure. - answer 70%
.... are typically used as the priming pump for a centrifugal pump. -
answer Rotary Gear Pumps
The fire pump must be capable of delivering a minimum capacity
of ... - ... gpm at ... psi or more than ... gpm at ... psi - answer 250 -
3000 gpm @ 150 psi
3000 gpm @ 100 psi
What are the two types of positive-displacement pumps? - answer
Positive and Rotary
Driver/Operator (IAFC/NFPA
3rd Edition) QUESTIONS AND
CORRECT DETAILED
ANSWERS (VERIFIED
ANSWERS)
Significance of
15.5
8
2
.8
.08 - answer Coefficients for
1 3/4"
2"
2 1/2"
3"
5"
Flow for smooth-bore tip @ 50 psi
1"
1 1/8"
1 1/4" - answer 200 gpm
250 gpm
300 gpm
,Fiction loss in all appliances when flow is 350 gpm or greater -
answer 10 psi
PDP formula - answer PDP = NP + FL
Elevation pressure formula for multistory buildings - answer EP = 5
psi x (number of stories - 1)
Fog nozzle reaction formula - answer NR = 0.0505 x gpm x sq root of
NP
The method that determines FL in 2 1/2" hose only and for flows of
160 gpm or greater - answer Subtract 10 method
Elevation pressure formula for a grade - answer EP = 0.5H
Pressure regulating valves are installed on standpipe risers where
static pressures exceed ... psi. - answer 175 psi
These valves are installed on standpipe risers where static
pressures exceed 175 psi - answer Pressure-regulating valves
NFPA ... , Standard for the Insulation of Sprinkler Systems - answer
13
GPM formula for smooth-bore nozzle - answer GPM = 29.7 x d
squared x sq root of NP
Flow for smooth-bore tip @ 80 psi
1 3/4"
, 2" - answer 800 gpm
1050 gpm
This method is a quick method for calculating FL per 100 ft in 3" and
5" hose line only - answer Condensed Q method
Smooth-bore nozzle reaction formula - answer NR = 1.57 x d
squared x NP
If the water tank has a certified capacity of less than 500 gallons
(2000 liters), the piping and valve arrangement must be capable of
delivering water to the pump at a minimum rate of ... gpm (1000 L/
min). - answer 250
What are the two types of centrifugal pumps? - answer Single stage
(one impeller) and Multistage (two or more impellers)
Per NFPA 1901, a 3000 GPM rated pump must deliver ... % of rate
capacity at 200 psi net pump pressure. - answer 70%
.... are typically used as the priming pump for a centrifugal pump. -
answer Rotary Gear Pumps
The fire pump must be capable of delivering a minimum capacity
of ... - ... gpm at ... psi or more than ... gpm at ... psi - answer 250 -
3000 gpm @ 150 psi
3000 gpm @ 100 psi
What are the two types of positive-displacement pumps? - answer
Positive and Rotary
