MWS CDC QUESTIONS WITH
ACCURATE ANSWERS
A hose diameter increases correct answer Friction loss decreases
A hose has a flow rate of 500gpm with a friction loss of 4psi. If the flow rate
increases to 1000gpm , then the friction loss will increase to: correct answer 16psi
A priming device works by: correct answer Creating a partial vacuum
According to NFPA 1901, a discharge pressure relief valve must operate within:
correct answer 10 sec after discharge pressure rises 30psi above the set level
All of the following are important reasons for maintaining inspection
documentation on an MWS app accept. correct answer Verifying that you are
inspecting the correct apparatus.
All of the following are mandatory steps for driving an MWS app through an
intersection without a stop sign ot stoplight and clear of traffic except correct
answer Bring the app to a complete stop. **
Approach the intersection with caution
check left, right , and left again for oncommmg traffic
Proceed through the intersection cautiously
All of the following are methods of water discharged used at the dump site
except: correct answer Draining
,All of the following are potential water sources for an app fire pump except:
correct answer A municipal storm drain
All of the following are types of portable water tanks except: correct answer
Locking tanks
All of the following factors must be included when determining the total pressure
loss (TPL) except: correct answer Pump pressure loss
All of the following statements about driving an MWS app through areas of
restricted horizontal and vertical clearances are true except. correct answer Use
the appropriate turn signal.
All of the following statements about static water source are true except; correct
answer Always use the closet hydrant to the incident
All of the following statements about static water sources are true except. correct
answer The static water source closest to the incident should always be used first.
***
Pre incident planning must be done to assess the accessibility of static water
sources
Weather can dramatically affect the accessibility and usability of static water
sources.
Safety of the equipment and crew is paramount when choosing a static water
source.
Allowing an MWS apparatus engine to idle over an extended period of time can
lead to all of the following except. correct answer Engine fatigue.
,An important feature of most screw on intake pressue relif valves is that they
correct answer Have bleeder valves to vent air when a conneted line is being
charged
An MWS app should be started with all the switches in teh off position in order to
correct answer Start the engine without a load
An MWS is resupplying 1000gpm to a pumper using 50ft of 5 in hose, the pumper
is in a gully four feet below the location of the MWS. who is correct
The hand method provides a fair estimate of correct answer Hose friction loss
As operations proceed during water shuttles, make and break personnel at the fill
site should be monitored: correct answer Ground conditions
At a fill site, a cone or similar device is used to correct answer Mark the stopping
point for the fill site
At a water shuttle operation, the amount of water dumped is the amount of
water the tank holds less correct answer 10%
At a water shuttle operation, the second and subsequent mobile water supply app
may leave the dumpsite once: correct answer Their entire load has been dumped
Before driving over a guarded railroad crossing during an emergency response
correct answer Look both right and left an and proceed cautiously
, Both the fill site time and dump time includes the time spent correct answer
maneuvering / positioning
C in the formula FL=C Q^2 L represents the: correct answer Hose diameter
coefficient
Correct steps for filling an MWS app correct answer Ensure that make and break
personnel are safely off to the side of the fill site
Position the MWS app until the driver door is parallel to the stop marker
Come to a complete stop and remain in the cab of your app
The make and break personnel connect the fill hose to the direct tank fill intake
The intake valve are open and the gate valve or manifold on the fill hose are
opened.
During a resupply operation which formula is used to determine discharge
pressure correct answer PDP= required intake pressure + TPL
During a resupply operation which formula is used to determine discharge
pressure correct answer PDP= required intake pressure + TPL
During an MWS app inspection, the lowest acceptable fuel gauge reading is
correct answer At least ¾ full
During MWS app service testing, the atmospheric air temp Should be between
0C- 100F correct answer 0C- 100F
ACCURATE ANSWERS
A hose diameter increases correct answer Friction loss decreases
A hose has a flow rate of 500gpm with a friction loss of 4psi. If the flow rate
increases to 1000gpm , then the friction loss will increase to: correct answer 16psi
A priming device works by: correct answer Creating a partial vacuum
According to NFPA 1901, a discharge pressure relief valve must operate within:
correct answer 10 sec after discharge pressure rises 30psi above the set level
All of the following are important reasons for maintaining inspection
documentation on an MWS app accept. correct answer Verifying that you are
inspecting the correct apparatus.
All of the following are mandatory steps for driving an MWS app through an
intersection without a stop sign ot stoplight and clear of traffic except correct
answer Bring the app to a complete stop. **
Approach the intersection with caution
check left, right , and left again for oncommmg traffic
Proceed through the intersection cautiously
All of the following are methods of water discharged used at the dump site
except: correct answer Draining
,All of the following are potential water sources for an app fire pump except:
correct answer A municipal storm drain
All of the following are types of portable water tanks except: correct answer
Locking tanks
All of the following factors must be included when determining the total pressure
loss (TPL) except: correct answer Pump pressure loss
All of the following statements about driving an MWS app through areas of
restricted horizontal and vertical clearances are true except. correct answer Use
the appropriate turn signal.
All of the following statements about static water source are true except; correct
answer Always use the closet hydrant to the incident
All of the following statements about static water sources are true except. correct
answer The static water source closest to the incident should always be used first.
***
Pre incident planning must be done to assess the accessibility of static water
sources
Weather can dramatically affect the accessibility and usability of static water
sources.
Safety of the equipment and crew is paramount when choosing a static water
source.
Allowing an MWS apparatus engine to idle over an extended period of time can
lead to all of the following except. correct answer Engine fatigue.
,An important feature of most screw on intake pressue relif valves is that they
correct answer Have bleeder valves to vent air when a conneted line is being
charged
An MWS app should be started with all the switches in teh off position in order to
correct answer Start the engine without a load
An MWS is resupplying 1000gpm to a pumper using 50ft of 5 in hose, the pumper
is in a gully four feet below the location of the MWS. who is correct
The hand method provides a fair estimate of correct answer Hose friction loss
As operations proceed during water shuttles, make and break personnel at the fill
site should be monitored: correct answer Ground conditions
At a fill site, a cone or similar device is used to correct answer Mark the stopping
point for the fill site
At a water shuttle operation, the amount of water dumped is the amount of
water the tank holds less correct answer 10%
At a water shuttle operation, the second and subsequent mobile water supply app
may leave the dumpsite once: correct answer Their entire load has been dumped
Before driving over a guarded railroad crossing during an emergency response
correct answer Look both right and left an and proceed cautiously
, Both the fill site time and dump time includes the time spent correct answer
maneuvering / positioning
C in the formula FL=C Q^2 L represents the: correct answer Hose diameter
coefficient
Correct steps for filling an MWS app correct answer Ensure that make and break
personnel are safely off to the side of the fill site
Position the MWS app until the driver door is parallel to the stop marker
Come to a complete stop and remain in the cab of your app
The make and break personnel connect the fill hose to the direct tank fill intake
The intake valve are open and the gate valve or manifold on the fill hose are
opened.
During a resupply operation which formula is used to determine discharge
pressure correct answer PDP= required intake pressure + TPL
During a resupply operation which formula is used to determine discharge
pressure correct answer PDP= required intake pressure + TPL
During an MWS app inspection, the lowest acceptable fuel gauge reading is
correct answer At least ¾ full
During MWS app service testing, the atmospheric air temp Should be between
0C- 100F correct answer 0C- 100F
