Driver Operator Mobile Water Supply
UPDATED Exam Questions and CORRECT
Answers
What does the C stand for in this equation? FL=CQ - CORRECT ANSWER - Fricition
loss coefficient
Why should you pull short or past the hydrant if you have front or rear suction? - CORRECT
ANSWER - To allow the hose to bend
How far away from the pumper can you safely apply a hose clamp? - CORRECT
ANSWER - 20 ft
Where to position apparatus near rail road tracks? - CORRECT ANSWER - On the same
side of the incidents
How far from a downed power line should you stand away? - CORRECT ANSWER - The
distance between two power lines
Never use a hose clamp on - CORRECT ANSWER - LDH
What to use high expansion foam with - CORRECT ANSWER - High pressure
compressed air
Firefighter at the hydrant on forward lay should have hose, hydrant wrench and - CORRECT
ANSWER - Gate valve
What to use on vertical surfaces - CORRECT ANSWER - Class A dry foam
, What is a grid system? - CORRECT ANSWER - A water supply system that utilizes
lateral feeders for improved distribution
What is the distance between the liquid surface of the foam concentrate and the foam concentrate
inlet to the foam educator? - CORRECT ANSWER - Maximum of 6 ft
What is net discharge pressure? - CORRECT ANSWER - Actual amount of pressure being
produced by the pump; difference between the intake pressure and the discharge pressure
Atmospheric pressure decreases .5 psi per ____ ft - CORRECT ANSWER - 1000 ft
Parallel= - CORRECT ANSWER - Volume mode
Series= - CORRECT ANSWER - Pressure mode
What is Theoretical lift? - CORRECT ANSWER - Scientific height that a column of water
maybe lifter by atmospheric pressure in a true vacuum
At sea level what is the max theoretical lift? - CORRECT ANSWER - 33.9 ft
As elevation increases the height will? - CORRECT ANSWER - Decrease
What is maximum lift? - CORRECT ANSWER - Any amount of water may be raised
through a hard suction hose to a pump; determined by the ability of the pump to create a vacuum
What decibel should firefighters wear gearing protection? - CORRECT ANSWER - 90
decibels
Safest operating pressure for smooth bore nozzle? - CORRECT ANSWER - 50 psi
UPDATED Exam Questions and CORRECT
Answers
What does the C stand for in this equation? FL=CQ - CORRECT ANSWER - Fricition
loss coefficient
Why should you pull short or past the hydrant if you have front or rear suction? - CORRECT
ANSWER - To allow the hose to bend
How far away from the pumper can you safely apply a hose clamp? - CORRECT
ANSWER - 20 ft
Where to position apparatus near rail road tracks? - CORRECT ANSWER - On the same
side of the incidents
How far from a downed power line should you stand away? - CORRECT ANSWER - The
distance between two power lines
Never use a hose clamp on - CORRECT ANSWER - LDH
What to use high expansion foam with - CORRECT ANSWER - High pressure
compressed air
Firefighter at the hydrant on forward lay should have hose, hydrant wrench and - CORRECT
ANSWER - Gate valve
What to use on vertical surfaces - CORRECT ANSWER - Class A dry foam
, What is a grid system? - CORRECT ANSWER - A water supply system that utilizes
lateral feeders for improved distribution
What is the distance between the liquid surface of the foam concentrate and the foam concentrate
inlet to the foam educator? - CORRECT ANSWER - Maximum of 6 ft
What is net discharge pressure? - CORRECT ANSWER - Actual amount of pressure being
produced by the pump; difference between the intake pressure and the discharge pressure
Atmospheric pressure decreases .5 psi per ____ ft - CORRECT ANSWER - 1000 ft
Parallel= - CORRECT ANSWER - Volume mode
Series= - CORRECT ANSWER - Pressure mode
What is Theoretical lift? - CORRECT ANSWER - Scientific height that a column of water
maybe lifter by atmospheric pressure in a true vacuum
At sea level what is the max theoretical lift? - CORRECT ANSWER - 33.9 ft
As elevation increases the height will? - CORRECT ANSWER - Decrease
What is maximum lift? - CORRECT ANSWER - Any amount of water may be raised
through a hard suction hose to a pump; determined by the ability of the pump to create a vacuum
What decibel should firefighters wear gearing protection? - CORRECT ANSWER - 90
decibels
Safest operating pressure for smooth bore nozzle? - CORRECT ANSWER - 50 psi
