Pump Ops Exam Questions with Correct Answers 100% Verified by Experts| 2025/2026 Latest
Update
Water is in a liquid state between 32-212 degrees F
What is water's weight? 8.33 lbs per gallon
Specific heat The heat absorbing capacity of a substance
Boiling point The temperature at which a liquid absorbs enough heat to change into a vapor.
Specific gravity the density of liquids as relation to water.
Density of water 1
What is steam expansion rate at boiling point? 1700x
Water exerts a pressure of .434 per ft. of elevation
FL increases as the length of the hose or pipe increases
Close hydrants valves and nozzles slowly to prevent waterhammer
Water systems must have a source, a means of moving, treatment or processing, and
distribution.
Gravity System When the means of moving the water is higher than the distribution system
, What could disable pumping and treatment facilities in a water system? Loss of power and
natural disasters
A grid system provides circulating feeds from several mains
Dead end hydrant A fire hydrant that only receives water from only one direction
In industrial and business districts, water main minimum is 8" crossed by 12" every 600ft
In residential districts, water main minimum is 6" crossed by 8" every 600ft
Main function of a main water line valve is to control the flow of water in distribution piping
OS and Y valves have a threaded stem that controls the gate opening and closing.
What reduces the diameter on the inside of pipes increasing friction loss? Encrustation of
minerals
When using a Wye valve the attack lines should be the same length and diameter
What provides water flow in GPM? Flow meters
The hand method is used to estimate friction loss
The hand method starts with the thumb of the left hand
Update
Water is in a liquid state between 32-212 degrees F
What is water's weight? 8.33 lbs per gallon
Specific heat The heat absorbing capacity of a substance
Boiling point The temperature at which a liquid absorbs enough heat to change into a vapor.
Specific gravity the density of liquids as relation to water.
Density of water 1
What is steam expansion rate at boiling point? 1700x
Water exerts a pressure of .434 per ft. of elevation
FL increases as the length of the hose or pipe increases
Close hydrants valves and nozzles slowly to prevent waterhammer
Water systems must have a source, a means of moving, treatment or processing, and
distribution.
Gravity System When the means of moving the water is higher than the distribution system
, What could disable pumping and treatment facilities in a water system? Loss of power and
natural disasters
A grid system provides circulating feeds from several mains
Dead end hydrant A fire hydrant that only receives water from only one direction
In industrial and business districts, water main minimum is 8" crossed by 12" every 600ft
In residential districts, water main minimum is 6" crossed by 8" every 600ft
Main function of a main water line valve is to control the flow of water in distribution piping
OS and Y valves have a threaded stem that controls the gate opening and closing.
What reduces the diameter on the inside of pipes increasing friction loss? Encrustation of
minerals
When using a Wye valve the attack lines should be the same length and diameter
What provides water flow in GPM? Flow meters
The hand method is used to estimate friction loss
The hand method starts with the thumb of the left hand
