USAF Mobile Water Supply (MWS) Fire Practice Test

These questions are part of the practice quiz. Start practicing

• Parking brake holds on what grade?
• In a shuttle operation, how far does the MWS shuttle water in each leg?
• The side mirrors on an MWS apparatus are used to
• Which of the following is one of the Pre-Service tests?
• In order of capacity from least to greatest, which hydrant color sequence is correct?
• Which net discharge pressure corresponds to 70% discharge?
• Which statement accurately lists the three primary performance tasks candidates will be tested on?
• Which statement indicates a steering problem?
• A major advantage of large diameter hoses is their:
• Weekly checks include Pump and Intake Strainers. Which option lists one of the weekly checks?
• Which factor is NOT included when determining total pressure loss (TPL)?
• Which of the following is NOT a main factor to consider when selecting a drafting site?
• For water shuttle operations, what is the BEST choice for fill and dump route of travel?
• Daily Checks include Pump primer, pressure control, drive control, hose lines, cooling, fuel tank, suppression and all valves. Which item is included in daily checks?
• Transmission fluid should be checked:
• Which combination of records is used to track engine performance over time?
• Which of the following is a Pre-Service Test?
• What is the Total Flow rate calculation?
• What net discharge pressure corresponds to 100% discharge?
• Which of the following statements about approaching an intersection is not true?
• After testing PTO control and placing the transmission in the recommended gear for stationary PTO operation, what should the speedometer read?
• Which statement about hydrant grid systems is true?
• Identify TWO types of apparatus required to operate an effective water shuttle:
• Which statement is true about IFSTA's recommendation for pumpers in water shuttle operations?
• Using the hand method, friction loss for 100 ft of 2.5 inch hose at 300 gpm is approximately:
• Which of the following is a pressure test point used in the pressure control service test?
• MDH supply lines are used for filling what?
• Which step comes immediately before chocking the wheels in the stationary PTO operation sequence?
• Name the three factors of an MWS Apparatus.
• On large diameter water lines, gate valves are most often controlled by which device?
• Fill site pumpers should have a minimum pump capacity of?
• What is the most efficient method of unloading MWS apparatus loads?
• Which sequence correctly orders the steps for stationary operation of a PTO-driven fire pump?
• Which action best describes the SERIES/PRESSURE position for a multi-stage pump?
• Water pressure is defined as what?
• hydrants are used in firefighting as what?
• Identify an example of abiding by state, local, and departmental driving requirements.
• NFPA 1901 defines which standard?
• What is the first step when performing a Tank to Pump test?
• If you were pumping a pumper operating at the top of a 75-foot hill, the adjustment you must make to the PDP to account for the elevation pressure is to:
• A major advantage of medium diameter hoses is their:
• Periodic documentation should capture which item?
• What is the recommended approach when approaching an intersection with no signs or signals and a clear path?
• What is the capacity of the MWS tank used in the nurse tanker scenario?
• Which test evaluates the hardware's ability to withstand pressure prior to service?
• Hydrants use?
• Which of the following is NOT a water source used for firefighting?
• The LDH supply line is used for filling. How many connections are required?
• Before you drive an MWS apparatus across a bridge, you should:
• The dumpsite pumper in an MWS setup draws water from which source?
• A steering wheel rotation more than how many degrees without front tires turning indicates steering problems?
• Which of the following is an example of a factor used to determine total flow rate for MWS efficiency?
• What is the lowest acceptable fuel gauge reading?
• Which of the following is NOT included in daily checks?
• Which statement is true regarding static water sources?
• What does the pre-service test measure on an apparatus?
• What is an advantage of electronic governors over mechanical governors?
• Setting up multiple portable water tank operation requires how many personnel?
• What is the size for Medium Diameter hose?
• For drafting, the pump's rated capacity requires how many inches of water above the traditional strainer?
• Identify a hydrant color and the action to take before connecting to the fire pump in a large incident.
• The operation where the dumpsite pumper drafts water from the portable water tank that supplies the attack apparatus is called:
• Weekly checks include Pump gearbox and packing glands. Which option lists this item?
• Which of the following is NOT a reason to know the shape and size of your MWS apparatus?
• What is the best explanation for characteristics for an MWS Apparatus?
• Which rapid dump system type uses gravity to discharge water?
• Which unit is used to express total flow rate in MWS calculations?
• What is the most efficient method for transferring water between portable water tanks?
• Apparatus carrying more than 2,500 gallons are best used for which purpose?
• NFPA 1911 requires a MWS apparatus equipped with a fire pump to be service tested:
• Which statement about gravity dump systems is true?
• Which of the following is NOT a Large Diameter hose size?
• When inspecting an MWS Apparatus, how many sides does it have?
• The acceptable difference between measured flow and pitot readings is commonly no more than:
• NFPA 1911 requires service testing for an MWS apparatus equipped with a fire pump at least how often?
• Which valve component on large diameter lines is most commonly used to control flow?
• In the net discharge pressure chart, 150 psi corresponds to what percentage of discharge?
• In general, friction loss in hoses tends to what as hose length increases?
• What is the primary extinguishing agent?
• Which statement about friction loss is false?
• During drafting, how far below the water surface must the strainer be located?
• At 20 mph, MWS Apparatus must stop within:
• Which statement about static water sources is most accurate?
• Which statement best defines water pressure?
• Which of the following demonstrates a correct driving action at an intersection with a STOP sign?
• Which statement is not part of the recommended procedure when approaching obstructions in the roadway?
• Which of the following is a correct practice for driving maneuvers near obstructions?
• Why should piping, pump, and booster lines be drained before storage?
• Which statement about automatic transmission apparatus is also true?
• If some MWS apparatuses being filled have MDH tank fill intakes and others have LDH tank fill intakes, what is the best hose lay for the fill site operation?
• The first step in a pump and roll operation with a PTO-driven fire pump is to
• What is the total distance traveled by the MWS in a complete shuttle cycle?
• What is the minimum required intake pressure for an apparatus being resupplied?
• Who conducts the Pre-Service test for MWS apparatus?
• One MWS Apparatus parks next to the attack apparatus supplying it with a discharge line or by having the attack apparatus draft directly from the MWS internal tank describes which operation?
• What is the first step for tank to pump test?
• When connecting hard suction hose for drafting, how long should it be?
• For drafting, what is the minimum water depth required?
• Determine the friction loss in 500 feet of 4 inch hose flowing 500 gpm.
• Increasing the number of portable tanks in a water shuttle operation primarily affects the ability to achieve higher flow rates.
• The three parts of the pressure control test require you to close the flowing valves one at a time in no less than how many seconds and no more than how many seconds?
• The gauge and flowmeter test difference should be no more than:
• Why is it important to monitor the water level in the onboard tank?
• Engine inspection has an how many item checklist?
• The tank-to-pump flow rate test measures minimum flow standards of which standard?
• Under what condition are personnel allowed to move the MWS apparatus before it stops to begin moving?
• What is the primary purpose of portable water tanks in water shuttle operations?
• Before performing a quick fill operation, why should the tank vents be opened?
• IFSTA minimum pumpers for water shuttle operations?
• IFSTA recommends water shuttle operations use at least ______ pumpers.
• Which items are checked for leaks during the vacuum test?
• The priming device test threshold applies to pumps with capacity less than how many gpm?
• Which of the following is one of the three test points used in the pressure control service test?
• When maneuvering an MWS apparatus around obstructions in the roadway, which statement is incorrect?
• In pump and roll operations, which step should be performed before moving the vehicle?
• Which of the following is a Large Diameter hose size?
• For fill site operations to be successful, which action is recommended?
• In the priming test for pumps with capacity under 1,500 gpm, the priming device should be able to lift water through how many feet of hard suction?
• Firefighter Vadala thinks people will be most impressed if the engine is actually running; however, his supervisor informs him that not only is this unsafe but engine idling for an extended period of time could lead to?
• You arrive at the fill site, while another MWS apparatus is being filled at the filling source. What should you do?
• Which statement best reflects the route choice for minimizing pumping effort in a water shuttle between fill and dump sites?
• Which of the following is the Fire Pump service test?
• In drafting, what is the correct interpretation of the LIFT used for calculating intake height?
• Which statement describes the correct measurement unit for vacuum in a vacuum service test?
• When drafting from a static water source, what action helps prevent losing prime?
• Where is residual pressure typically measured in a hydrant operation?
• Which statement accurately reflects the drafting head requirement for maintaining rated capacity?
• When using MWS apparatus, one disadvantage of the direct pumping method is
• PDP stands for what in fire pump operation?
• If hydrants are coded Red, Orange, Green, Light Blue, which color represents the greatest capacity?
• Most MWS apparatus carry water in which range?
• An important feature of most screw-on intake pressure relief valves is that they
• During the vacuum test, after removing foreign material from the hard suction hose, what is the next step?
• An MWS Apparatus that pumps the water from their tank directly into the fire pump of the attack pumper is called:
• During the MWS apparatus service test, what is the acceptable atmospheric air temperature range?
• Which of the following is a disadvantage of a nurse tanker in a water shuttle operation besides longer dumping time?
• When using a static body of water as your water source during fire apparatus service testing, the water surface must not be more than how many feet above the centerline of the pump intake, and the water must be at least how many feet deep?
• During inspections, which elements should be identified and monitored?
• Which statement about static water sources is NOT true?
• When approaching an underpass or low clearance, what should you verify?
• Which net discharge pressure corresponds to 50% discharge?
• How much water do MWS apparatus typically carry?
• A hose with 500 gpm friction loss 4 psi, if flow increases to 1000 gpm, the friction loss becomes?
• The MWS apparatus dumps water into what kind of tank?
• Which of the following is true regarding determining total pressure loss?
• The fill rate of an MWS is determined by
• Which item is NOT among the four Pre-Service tests?
• Which option is NOT a factor of an MWS Apparatus?
• In the shuttle calculation, what is the make-and-break time at the fill site?
• In drafting terminology, LIFT is defined as what distance?
• Best definition of water pressure?
• If using a multi-stage pump for pumping from an internal tank or hydrant, which position gives you maximum pressure for a short period?
• You're presented with a column of water three feet by three feet, with a height of one foot, the water pressure of this column equals:
• Identify the two most important reasons for maintaining good MWS apparatus records.
• What is the required deflection at the mid-point of the drive belt?
• Friction loss is affected by flow rate.
• During drafting, the water surface must be no more than how many feet below the centerline of the pump intake?
• When maneuvering around obstructions in the roadway, which action is not recommended?
• During non-flow conditions, static pressure is usually higher than residual pressure.
• What is the friction loss in 100 feet of 2 ½ inch hose flowing 400 gpm?
• To prevent freezing damage when a stall door cannot be fixed until the next day, what action should you take?
• What is the role of the portable water tank in the MWS setup?
• Why should tank vents be open before performing a quick fill operation?
• Why do we drain pipes, the pump, and booster lines to prevent damage from what?
• NOT one of the three factors to determine total flow rate for MWS efficiency?
• Which of the following is NOT a water source used for firefighting?
• Tracking engine performance across time uses data collected in which records?
• Identify a true statement about hydrant grid systems with large supply mains and looping secondary mains.
• Air Brakes must be operational within how many seconds?
• When driving an MWS apparatus through an area with restricted horizontal clearance, you should:
• What is the total flow rate for the MWS under the described shuttle conditions?
• In order to properly drive on a downgrade slope you must execute four steps. These are the first 3 steps. Downshift before entering the grade, make sure the MWS apparatus remains in gear, use brakes and lower gears, identify the step that is missing from the list above.
• Why should an MWS apparatus be started with all electrical switches OFF?
• Which of the following is a disadvantage of a nurse tanker in a water shuttle operation?
• What is the friction loss in 500 feet of 5-inch hose flowing 1250 gpm?
• Weekly checks include Rapid Dump system. Which option lists this item?
• What is the correct equation for elevation pressure loss or gain?
• What is the basic goal of a multiple portable water tank operation?
• If engine speed check shows the MWS apparatus is running at a different speed than rated, you should:
• Name the three factors used to determine total flow rate in MWS efficiency calculations.
• What happens to friction loss if hose diameter increases while maintaining the same flow?
• Which weekly check item relates to hydraulic systems?
• Mandatory steps for driving a MWS apparatus through an intersection without a stop sign or stop light and clear of traffic EXCEPT
• When determining handling time in a flow rate calculation, which components should be included?
• What happens to friction loss as hose diameter increases?
• If the portable tanks at the dumpsite become empty during an emergency, what should the dumpsite pumper do?
• IFSTA recommends water shuttle operations use at least ______ pumpers.
• Which statement best describes a key capability of positive displacement pumps compared to centrifugal pumps?
• Before moving from the acceleration lane onto a limited access highway, the last thing you should do is?
• Which statement describes Direct Pumping Operations?
• The most efficient way to operate a dump site is to use a water shuttle operation is to use a:
• A major advantage of a positive displacement pump over a centrifugal pump is that it can
• What size is the standard direct fill connection on the MWS apparatus?
• NFPQ 1002 defines the standard for what?
• In a water shuttle, what supplies the attack apparatus?
• Which item should you beware of during inspections, in addition to identifying people and actions?
• When incident flow rates exceed 300 gpm, which setup should be used?
• Draft from a static source, open booster line to prevent losing prime. Which action best matches this guidance?
• Apparatus carrying less than 2,500 gallons are best for which operation?
• Which of the following is included as one of the four Pre-Service tests?
• Given 100 feet of 3-inch hose with 2½ inch couplings flowing 500 gpm, what is the friction loss?
• Which operation features the MWS supplying water to the attack apparatus via discharge line or draft from its internal tank?
• During priming device testing for pumps under 1500 gpm, the vacuum must be able to lift water 10 feet through 20 feet of hard suction hose in how many seconds?
• What is the primary purpose of the 2 inch diameter requirement for the MWS pump line when a pump is installed?
• Which statement about an automatic transmission apparatus is true?
• Which step is performed first in the stationary PTO operation sequence?
• Identify the intake configuration that provides the best flow rate for a 4-inch direct fill connection.
• Which color represents the second smallest hydrant capacity?
• What is a recommended strategy for cooling an overheating fire pump?
• Both the fill site time and the dump time include the time spent
• In a nurse tanker operation without a shuttle, identify how the MWS apparatus could supply the attack apparatus.
• What is the minimum hydrostatic test pressure?
• TPL calculation: which is NOT included?
• An apparatus with capacity greater than 2,500 gallons is best suited for which application?
• Which factors are included in determining the total flow rate during shuttle operations?
• At a dump site with one portable water tank, the dump site spotter should signal you to stop at the spot where the dump valve is aligned with which component?
• To meet fire incidents requiring relatively high flow rates (more than 300 gpm), what arrangement is recommended?
• Which factor is NOT included when determining the total pressure loss (TPL)?
• Identify a primary responsibility of the make and break personnel at a fill site during fill site operations.
• During a vacuum service test, after the engine is shut off, the mercury column should fall no more than 10 inches in five minutes.
• All statements about parking an MWS apparatus near a railroad track are true except:
• In gravity dump systems, the dump valve may be closed manually or by what device?
• If MWS is equipped with a fire pump, the pump line must be capable of delivering what flow and be what diameter?
• Driver operator Bluth is supplying water to an incident involving a structure fire at the far end of a cul-de-sac, the dump site is just inside the cul-de-sac, she needs to return to the fill site for more water. Her best bet at this point is to:
• Which of the following best describes using portable water tanks in high-flow incidents?
• Which statement best describes fill site readiness after connections and hose layout?
• In the context of static water sources, which statement is true?
• Priming device test for a pump less than 1500 gpm requires the priming device to create the necessary vacuum in how many seconds to lift water 10 feet through 20 feet of hard suction hose?
• How does atmospheric pressure at 10,000 feet compare to sea level?
• The tank-to-pump test is used to confirm minimum flow standards between the tank and pump as per which NFPA standard?
• Medium Diameter hoses come in which sizes?
• What length of hard suction is recommended for drafting?
• Which feature makes a pumper best suited for use as a fill site pumper?
• A Pre-Service test is performed by?
• During the vacuum service test, the system vacuum and pump priming device should achieve a column of mercury of at least
• What does NFPA 1911 cover?
• How many Pre-Service tests are listed?
• What does the 80% fullness refer to in the pump line specification?