DRIVER OPERATOR LATEST
MOBILE WATER SUPPLY
EXAM
What is the minimum required intake pressure of the apparatus being
resupplied? - ANSWERS-20 psi
Static pressure is the available pressure at a discharge point without
water flowing. Once water starts flowing from a hydrant, friction loss
usually reduces static pressure to? - ANSWERS-Residual pressure
A hose has a flow rate of 500 gpm with a friction loss of 4 psi, if the
flow rate increases to 1000 gpm, then the friction loss will increase to??
- ANSWERS-16 psi
The hand method provides a fair estimate of? - ANSWERS-hose friction
loss
The condensed Q formula for a 4in hoseline is? - ANSWERS-
FL=Q^2/15
Hard suction hoses generally have a diameter of between? - ANSWERS-
4 and 6 inches
END OF
PAGE
1
, DRIVER OPERATOR LATEST
MOBILE WATER SUPPLY
EXAM
A major advantage of a positive displacement pump over a centrifugal
pump is that it can? - ANSWERS-pump air, making it self priming
One advantage that electronic governors have over mechanical ones is
that electronic ones can? - ANSWERS-maintain pressure in all other
discharge lines if only one line trips the governor
An important feature of most screw on intake pressure relief valves is
that they? - ANSWERS-Have bleeder valves to vent air when a
connected line is being charged.
To transfer pressure, a piston positive displacement pump uses the
principle? - ANSWERS-of the incompressibility of a liquid
To disengage the pump on PTO driven pumps, begin by? - ANSWERS-
reducing the engine speed to idle
When you disengage a midship transfer driven pump, reduce the engine
speed to idle, place the transmission in neutral, and then - ANSWERS-
wait until the pump drive shaft spins down
END OF
PAGE
2
, DRIVER OPERATOR LATEST
MOBILE WATER SUPPLY
EXAM
One recommended strategy for cooling an overheating fire pump is to? -
ANSWERS-Circulate water back to the tank
Before performing a quick fill operation you should make sure the tank
vents are open because failure to have adequate venting during this
operation could result in? - ANSWERS-A dramatic pressure failure of
the tank.
You've been asked to help prepare a pre incident plan for water shuttle
operations that could be needed at a farm in your jurisdiction. The BEST
choice for a fill site is? - ANSWERS-A large pond in a park three miles
away where MWS apparatuses can enter one way and exit another.
Identify TWO types of apparatus required to operate an effective water
shuttle? - ANSWERS-Pumper or fire apparatus
MWS apparatus
END OF
PAGE
3
MOBILE WATER SUPPLY
EXAM
What is the minimum required intake pressure of the apparatus being
resupplied? - ANSWERS-20 psi
Static pressure is the available pressure at a discharge point without
water flowing. Once water starts flowing from a hydrant, friction loss
usually reduces static pressure to? - ANSWERS-Residual pressure
A hose has a flow rate of 500 gpm with a friction loss of 4 psi, if the
flow rate increases to 1000 gpm, then the friction loss will increase to??
- ANSWERS-16 psi
The hand method provides a fair estimate of? - ANSWERS-hose friction
loss
The condensed Q formula for a 4in hoseline is? - ANSWERS-
FL=Q^2/15
Hard suction hoses generally have a diameter of between? - ANSWERS-
4 and 6 inches
END OF
PAGE
1
, DRIVER OPERATOR LATEST
MOBILE WATER SUPPLY
EXAM
A major advantage of a positive displacement pump over a centrifugal
pump is that it can? - ANSWERS-pump air, making it self priming
One advantage that electronic governors have over mechanical ones is
that electronic ones can? - ANSWERS-maintain pressure in all other
discharge lines if only one line trips the governor
An important feature of most screw on intake pressure relief valves is
that they? - ANSWERS-Have bleeder valves to vent air when a
connected line is being charged.
To transfer pressure, a piston positive displacement pump uses the
principle? - ANSWERS-of the incompressibility of a liquid
To disengage the pump on PTO driven pumps, begin by? - ANSWERS-
reducing the engine speed to idle
When you disengage a midship transfer driven pump, reduce the engine
speed to idle, place the transmission in neutral, and then - ANSWERS-
wait until the pump drive shaft spins down
END OF
PAGE
2
, DRIVER OPERATOR LATEST
MOBILE WATER SUPPLY
EXAM
One recommended strategy for cooling an overheating fire pump is to? -
ANSWERS-Circulate water back to the tank
Before performing a quick fill operation you should make sure the tank
vents are open because failure to have adequate venting during this
operation could result in? - ANSWERS-A dramatic pressure failure of
the tank.
You've been asked to help prepare a pre incident plan for water shuttle
operations that could be needed at a farm in your jurisdiction. The BEST
choice for a fill site is? - ANSWERS-A large pond in a park three miles
away where MWS apparatuses can enter one way and exit another.
Identify TWO types of apparatus required to operate an effective water
shuttle? - ANSWERS-Pumper or fire apparatus
MWS apparatus
END OF
PAGE
3
