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Mobile Water Supply Questions and Answers
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Mobile Water Supply Questions and Answers
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Mobile Water Supply Questions and Answers"C" in the formula FL = C Q^2 L represent the:
A. hose diameter coefficient
B. hose length divided by 100
C. elevation change
D. flow rate divided by 100 - ANSWER-A. hose diameter coefficient
"C" in the formula Fl = C Q2 L represent the:
A. hose diameter coefficient
B. Hose length divided by 100
C. flow rate divided by 100
D. elevation change - ANSWER-A. hose diameter coefficient
A _____ strainer must have at least 24 inches of water above this type of strainer or the
water above the strainer will whirlpool
A. traditional strainer
B. floating strainer
C. low-level strainer - ANSWER-A. traditional strainer
A ______ can rest on the bottom of a pool or tank with a minimum of two inches of
water above to prevent whirlpooling
A. traditional strainer
B. floating strainer
C. low-level strainer - ANSWER-C. low-level strainer
A ______ strainer may get around the 24-inch minimum depth with this type of strainer
but the filter can only draw water from the bottom.
A. traditional strainer
B. floating strainer
C. low-level strainer - ANSWER-B. floating strainer
A hose has a flow rate of 500 gpm with a friction loss of 4 psi. If the flow rate increase to
1,000 gpm, then the friction loss will increase to:
A 8 psi
B. 12 psi
,C. 16 psi
D. 24 psi - ANSWER-C. 16 psi
A major advantage of a positive displacement pump over a centrifugal pump is that it
can:
A. pump water on both the forward and backward stroke
B. be used with both fog and solid stream nozzles
C. power high pressure fire steams with multi-stage models
D. pump air, making it self-priming - ANSWER-D. pump air, making it self-priming
A major advantage of large diameter hoses is their:
A. flexibility when making hydrant connections
B. uses as supply lines
C. use in drafting from static water supplies
D. rigidity allowing fire apparatus to drive over them - ANSWER-B. uses as supply lines
A major advantages of medium diameter hoses is their:
A. flexibility for uses as an attack, relay or supply line
B. availability in long lengths
C. use in drafting from static water supplies
D. rigidity allowing fire apparatus to drive over them - ANSWER-A. flexibility for uses as
an attack, relay or supply line
A priming device works by:
A. creating a partial vacuum
B. centripetal force
C. centrifugal force
,D. creating compression within a rotating chamber - ANSWER-A. creating a partial
vacuum
A single portable water tank works on fires that require:
A. more than an hour to extinguish
B. relatively low overall flow rats
C. more than one MWS apparatus at the scene
D. less personnel at he incident - ANSWER-B. relatively low overall flow rats
According to NFPA 1901, a discharge pressure relief valve must operate within...
A. 10 seconds after discharge pressure rise 30psi above the set level
B. 15 seconds after discharge pressure rises 15psi above the set level
C. 20 seconds after discharge pressure rises 20 psi above the set level
D. 3 seconds after discharge pressure rises 10 psi above the set pressure - ANSWER-
A. 10 seconds after discharge pressure rise 30psi above the set level
All of the following are important reasons for maintaining inspection documentation on
an MWS apparatus EXCEPT:
A. verifying that you are inspecting the correct apparatus
B. providing evidence during equipment accident investigations
C. providing proof for warranty and claims concerning the apparatus
D. determining when the equipment is due for replacement - ANSWER-A. verifying that
you are inspecting the correct apparatus
All of the following are methods of water discharge used at the dump site EXCEPT:
A. draining
B. pump on the mobile water supply apparatus
C. pumping and dumping
D. dump valve - ANSWER-A. draining
ALL of the following are methods of water discharge used at the dump sites EXCEPT:
A. draining
B. pump on the mobile water supply apparatus
C. pumping and dumping
D. dump valve - ANSWER-A. draining
, All of the following are potential water sources for an apparatus fire pump EXCEPT:
A. swimming pool
B. pressurized water from hydrant
C. municipal storm drain
D. the onboard tank - ANSWER-C. municipal storm drain
All of the following are types of portable water tanks EXCEPT:
A. folding tanks
B. self-supporting tanks
C. unassembled metal frame tanks
D. locking tanks - ANSWER-D. locking tanks
All of the following are types of portable water tanks EXCEPT:
A. self-supporting tanks
B. locking tanks
C. folding tanks
D. unassembled metal frame tanks - ANSWER-B. locking tanks
All of the following factors must be included when determining the total pressure loss
(TPL) except:
A. elevation pressure loss/gain
B. appliance pressure loss
C. hose friction loss
D. pump pressure loss - ANSWER-D. pump pressure loss
All of the following statements about driving an MWS apparatus through areas of
restricted horizontal and vertical clearances are true except:
A. using side mirrors
B. Judge your MWS apparatus clearance around obstructions
C. Make sure you can see your spotter
D. use appropriate turn signals - ANSWER-D. use appropriate turn signals
Allowing an MWS apparatus engine to idle over an extended period of time can lead to
all of the following EXCEPT:
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