TCFP DRIVER/ OPERATOR
A fog streams cone ranges from a narrow ___________________
pattern to a wide 90 - degree pattern. - ANSWERS-45-degree angle
when a leak is detected in a fire hose during pumping operations and
the fire hose cannot easily be replaced, a _____________ may be
used to temporarily stop the leak. - ANSWERS-hose jacket
which of the following is NOT one of the three groups of nozzles? -
ANSWERS-Low-pressure master stream nozzles
what type of valves are found on hydrants? - ANSWERS-Gate
A _________________ is equipped with two quarter- turn ball valves
so that the flow of water to each of the split lines can be controlled
independently. - ANSWERS-gated wye
True or False? There are six types of nozzles that are manufactured
for the fire service. - ANSWERS-False
A _____________ is a device that splits one hose stream into two
different hose steams. - ANSWERS-wye
Which size of medium- diameter fire hose is most often used for
heavy interior attack lines? - ANSWERS-2.5 inch
,__________________ nozzles produce fine droplets of water that
absorb heat quickly. - ANSWERS-Fog stream
True or False? Streams from smooth- bore nozzles do NOT absorb
heat as readily as fog streams. - ANSWERS-True
Supply hose must be tested annually at a pressure of at least
______________ and is intended to be used a pressures up to
___________. - ANSWERS-200 psi; 185 psi
Which of the following classifications of fire hose can be used as
either an attack line or supply line? - ANSWERS-Medium- diameter
hose
what is the term for a special type of supply hose that is used to draft
water from a static source such as a river, lake, or portable drafting
basin? - ANSWERS-Hard suction hose
Generally considered to deliver a flow rate of 250 gpm. It takes at
least two firefighters to safely control this size of handline owing to
the combined weight of the hose and the nozzle reaction force. -
ANSWERS-2.5 inch attack hose
Often used to deliver water to master stream device or a fire
department connection. - ANSWERS-3-inch medium- diameter hose
(MDH)
,Must never be used as attack hose unless that usage is recommended
by its manufacturer. - ANSWERS-Large-diameter supply hose (LDH)
Ranges in size from 1 inch to 2 inches in diameter. - ANSWERS-
Small-diameter hose (SDH)
Double female connectors allow the driver/ operator to attach a
____________ coupling to a _____________ coupling. - ANSWERS-
male; male
________________ refers to the pressure required at the nozzle to
deliver the fire stream and flow rate for which the nozzle was
designed. - ANSWERS-Nozzle pressure
What term describes an exact method of hydraulic calculations. -
ANSWERS-Theoretical Hydraulics
Using the subtract 10 method, calculate the pump discharge pressure
for 300 ft of 2.5 inch hose with a 1 inch smooth bore tip flowing 200
gallons/ min with a nozzle pressure of 50 psi. - ANSWERS-145 psi
Using the subtract 10 method, calculate the pump discharge pressure
for 300ft of 2.5 inch hose with a 1-inch smooth-bore tip flowing 200
gallons/ min with a nozzle pressure of 50 psi. - ANSWERS-74 psi
, True or false? The most useful tool in a fire incident is knowledge of
the target structure and a well- developed preincident plan. -
ANSWERS-True
Which of the following is NOT one of the four laws governing how
friction loss behaves? - ANSWERS-Provide all conditions are equal,
friction loss will vary in direct proportion to the diameter of the hose.
Which of the following formulas is used to determine nozzle reaction
in smooth-bore nozzles? - ANSWERS-NR= 1.57 x D² x NP
What is the correct formula used for calculating friction loss in its
simplest form? - ANSWERS-FL= C x Q²x L
Which of the following does NOT influence pump calculations? -
ANSWERS-Pump type
Which of the following refers to the study of the characteristics and
movement of water as it pertains to calculations for fire streams and
fireground operations. - ANSWERS-Hydraulics
Lakes and streams require pulling a draft and are considered
_______________ water source. - ANSWERS-Static
To determine the head pressure, divide the height of the column in
feet by _________ (metric = height in meters divided by
___________). - ANSWERS-2.31; 9.812
A fog streams cone ranges from a narrow ___________________
pattern to a wide 90 - degree pattern. - ANSWERS-45-degree angle
when a leak is detected in a fire hose during pumping operations and
the fire hose cannot easily be replaced, a _____________ may be
used to temporarily stop the leak. - ANSWERS-hose jacket
which of the following is NOT one of the three groups of nozzles? -
ANSWERS-Low-pressure master stream nozzles
what type of valves are found on hydrants? - ANSWERS-Gate
A _________________ is equipped with two quarter- turn ball valves
so that the flow of water to each of the split lines can be controlled
independently. - ANSWERS-gated wye
True or False? There are six types of nozzles that are manufactured
for the fire service. - ANSWERS-False
A _____________ is a device that splits one hose stream into two
different hose steams. - ANSWERS-wye
Which size of medium- diameter fire hose is most often used for
heavy interior attack lines? - ANSWERS-2.5 inch
,__________________ nozzles produce fine droplets of water that
absorb heat quickly. - ANSWERS-Fog stream
True or False? Streams from smooth- bore nozzles do NOT absorb
heat as readily as fog streams. - ANSWERS-True
Supply hose must be tested annually at a pressure of at least
______________ and is intended to be used a pressures up to
___________. - ANSWERS-200 psi; 185 psi
Which of the following classifications of fire hose can be used as
either an attack line or supply line? - ANSWERS-Medium- diameter
hose
what is the term for a special type of supply hose that is used to draft
water from a static source such as a river, lake, or portable drafting
basin? - ANSWERS-Hard suction hose
Generally considered to deliver a flow rate of 250 gpm. It takes at
least two firefighters to safely control this size of handline owing to
the combined weight of the hose and the nozzle reaction force. -
ANSWERS-2.5 inch attack hose
Often used to deliver water to master stream device or a fire
department connection. - ANSWERS-3-inch medium- diameter hose
(MDH)
,Must never be used as attack hose unless that usage is recommended
by its manufacturer. - ANSWERS-Large-diameter supply hose (LDH)
Ranges in size from 1 inch to 2 inches in diameter. - ANSWERS-
Small-diameter hose (SDH)
Double female connectors allow the driver/ operator to attach a
____________ coupling to a _____________ coupling. - ANSWERS-
male; male
________________ refers to the pressure required at the nozzle to
deliver the fire stream and flow rate for which the nozzle was
designed. - ANSWERS-Nozzle pressure
What term describes an exact method of hydraulic calculations. -
ANSWERS-Theoretical Hydraulics
Using the subtract 10 method, calculate the pump discharge pressure
for 300 ft of 2.5 inch hose with a 1 inch smooth bore tip flowing 200
gallons/ min with a nozzle pressure of 50 psi. - ANSWERS-145 psi
Using the subtract 10 method, calculate the pump discharge pressure
for 300ft of 2.5 inch hose with a 1-inch smooth-bore tip flowing 200
gallons/ min with a nozzle pressure of 50 psi. - ANSWERS-74 psi
, True or false? The most useful tool in a fire incident is knowledge of
the target structure and a well- developed preincident plan. -
ANSWERS-True
Which of the following is NOT one of the four laws governing how
friction loss behaves? - ANSWERS-Provide all conditions are equal,
friction loss will vary in direct proportion to the diameter of the hose.
Which of the following formulas is used to determine nozzle reaction
in smooth-bore nozzles? - ANSWERS-NR= 1.57 x D² x NP
What is the correct formula used for calculating friction loss in its
simplest form? - ANSWERS-FL= C x Q²x L
Which of the following does NOT influence pump calculations? -
ANSWERS-Pump type
Which of the following refers to the study of the characteristics and
movement of water as it pertains to calculations for fire streams and
fireground operations. - ANSWERS-Hydraulics
Lakes and streams require pulling a draft and are considered
_______________ water source. - ANSWERS-Static
To determine the head pressure, divide the height of the column in
feet by _________ (metric = height in meters divided by
___________). - ANSWERS-2.31; 9.812
