A+ Exam Guide With Questions and Verified Answers Latest Edition
2025/2026
Terms in this set (135)
Reduced water volume or greater demand than the system can provide.
pressure from hydrants can
result from:
open water
mains. open
isolation valves.
greater demand than the system
can provide.
the use of both wet-barrel and
dry-barrel hydrants in the
same system.
Standard fire hydrants have at two hose outlet nozzles for 2 1/2-inch (65 mm) couplings.
least one large steamer
connection and:
four hose outlet nozzles for 2
1/2-inch (65 mm) couplings.
one smaller steamer
connection. two smaller
steamer connections.
two hose outlet nozzles for 2
1/2-inch (65 mm) couplings.
A dry-barrel hydrant only has the stem nut is operated to open the control valve.
water in it when: (588)
[4.3.15]
the stem nut is operated to
open the control valve.
a water main has broken.
a clapper valve has been opened.
the temperature outside is above
freezing.
,Where are wet-barrel hydrants Climates that do not have long periods of below-freezing temperatures
usually installed? (588)
[4.3.15]
Climates that do not have long
periods of below-freezing
temperatures
Climates that have a higher than
average number of
belowfreezing days
Rural areas without an
alternate water supply
Rural areas where multiple
departments may need to
respond
What should the fire department Place "out-of-service" tags on the hydrant
do when a hydrant is taken out-
of-service? (589)
[4.3.15]
Contact the hydrant
manufacturer Attempt to
repair the hydrant
Remove the stem nut
Place "out-of-service" tags on the
hydrant
A hydrant wrench is primarily remove discharge caps from the hydrant outlets.
used to: (590) [4.3.15]
repair the hydrant if it is out-
of-service. remove discharge
caps from the hydrant outlets.
apply a hose clamp near the hydrant
outlet. tighten hose couplings at
the apparatus
outlets.
Hydrants must be opened and water hammer.
closed slowly in order to
prevent: (592) [4.3.15] friction
loss.
hydrant
,erosion.
loss of
suction.
water
hammer.
What must be done when Verify that all of the water drains out
shutting down a dry-barrel
hydrant? (593) [4.3.15]
Request help from the hydrant
manufacturer
Leave at least 10 percent of the
water in the hydrant
Verify that all of the water
drains out Request help from a
hydrant technician
How can a 41/2-inch (115 mm) Use a reducer coupling
intake hose be connected to a 2
1/2 -inch steamer (65 mm)
connection on the hydrant?
Use a reducer
coupling Attach a
gate valve
Attach a water thief
appliance Use a two-
way coupling
, Lakes, ponds, and rivers are all may provide water through drafting operations.
static water sources that: (595)
[4.3.15]
can be used if chemicals are
added to purify the water.
may provide water through
drafting operations.
may not be used for drafting
because the water is
nonpotable.
should be used as a last resort
because of potential
contaminants.
What are attached to hard- Intake strainers
suction hose during drafting
operations in order to
prevent debris from entering the
pump?
(595) [4.3.15]
Gate valves
Drafting valve
Siamese
appliance Intake
strainers
The three necessary parts of a mobile water supply apparatus to haul the water.
water
shuttle operation are the dump
site at the fire, the fill site at
the water source, and:
(595-596) [4.3.15]
a secondary static water source.
collapsible storage tanks to hold
the water. jet siphon devices.
mobile water supply apparatus
to haul the water.
How should a portable water tank Must allow easy access from multiple directions, but not block
for a other apparatus from the fire scene
mobile water supply operation
be set up? (596-597) [4.3.15]
2025/2026
Terms in this set (135)
Reduced water volume or greater demand than the system can provide.
pressure from hydrants can
result from:
open water
mains. open
isolation valves.
greater demand than the system
can provide.
the use of both wet-barrel and
dry-barrel hydrants in the
same system.
Standard fire hydrants have at two hose outlet nozzles for 2 1/2-inch (65 mm) couplings.
least one large steamer
connection and:
four hose outlet nozzles for 2
1/2-inch (65 mm) couplings.
one smaller steamer
connection. two smaller
steamer connections.
two hose outlet nozzles for 2
1/2-inch (65 mm) couplings.
A dry-barrel hydrant only has the stem nut is operated to open the control valve.
water in it when: (588)
[4.3.15]
the stem nut is operated to
open the control valve.
a water main has broken.
a clapper valve has been opened.
the temperature outside is above
freezing.
,Where are wet-barrel hydrants Climates that do not have long periods of below-freezing temperatures
usually installed? (588)
[4.3.15]
Climates that do not have long
periods of below-freezing
temperatures
Climates that have a higher than
average number of
belowfreezing days
Rural areas without an
alternate water supply
Rural areas where multiple
departments may need to
respond
What should the fire department Place "out-of-service" tags on the hydrant
do when a hydrant is taken out-
of-service? (589)
[4.3.15]
Contact the hydrant
manufacturer Attempt to
repair the hydrant
Remove the stem nut
Place "out-of-service" tags on the
hydrant
A hydrant wrench is primarily remove discharge caps from the hydrant outlets.
used to: (590) [4.3.15]
repair the hydrant if it is out-
of-service. remove discharge
caps from the hydrant outlets.
apply a hose clamp near the hydrant
outlet. tighten hose couplings at
the apparatus
outlets.
Hydrants must be opened and water hammer.
closed slowly in order to
prevent: (592) [4.3.15] friction
loss.
hydrant
,erosion.
loss of
suction.
water
hammer.
What must be done when Verify that all of the water drains out
shutting down a dry-barrel
hydrant? (593) [4.3.15]
Request help from the hydrant
manufacturer
Leave at least 10 percent of the
water in the hydrant
Verify that all of the water
drains out Request help from a
hydrant technician
How can a 41/2-inch (115 mm) Use a reducer coupling
intake hose be connected to a 2
1/2 -inch steamer (65 mm)
connection on the hydrant?
Use a reducer
coupling Attach a
gate valve
Attach a water thief
appliance Use a two-
way coupling
, Lakes, ponds, and rivers are all may provide water through drafting operations.
static water sources that: (595)
[4.3.15]
can be used if chemicals are
added to purify the water.
may provide water through
drafting operations.
may not be used for drafting
because the water is
nonpotable.
should be used as a last resort
because of potential
contaminants.
What are attached to hard- Intake strainers
suction hose during drafting
operations in order to
prevent debris from entering the
pump?
(595) [4.3.15]
Gate valves
Drafting valve
Siamese
appliance Intake
strainers
The three necessary parts of a mobile water supply apparatus to haul the water.
water
shuttle operation are the dump
site at the fire, the fill site at
the water source, and:
(595-596) [4.3.15]
a secondary static water source.
collapsible storage tanks to hold
the water. jet siphon devices.
mobile water supply apparatus
to haul the water.
How should a portable water tank Must allow easy access from multiple directions, but not block
for a other apparatus from the fire scene
mobile water supply operation
be set up? (596-597) [4.3.15]
