WATER SUPPLY SYSTEMS COMPREHENSIVE EXAM 2026
QUESTIONS AND SOLUTIONS RATED A+
✔✔Grid systems should include what four components? - ✔✔Primary feeders
Secondary feeders
Distributers
and Circulating Feed
✔✔Where are Private Water supplies usually found? - ✔✔Large commercial, industrial,
or institutional properties
✔✔What three thingsaffet the performace of a water piping system? - ✔✔Piping
materials
Pipe Diameter
Piping arrangements
✔✔What are generally the materials used in piping? - ✔✔Cast Iron
Ductile Iron
asbestos cement
Steel
Polyvinyl Chloride (PVC)
Plastic
Concrete
✔✔3 types of Piping arrangements - ✔✔Loop system
Grid System
Dead-end system
✔✔What do water main valves do? - ✔✔They provide the ability to isolate portions of
the systems
✔✔What are the two types of fire hydrants? - ✔✔Wet Barrel
Dry Barrel
✔✔What is the NFPA code for water supply systems? - ✔✔NFPA 1142
✔✔Third principle of friction loss - ✔✔
✔✔ What are the ways water can extinguish fire? - ✔✔Primary way- cooling/ absorbing
heat from the fire
Smothering- occurs when oxygen is excluded from the fire
✔✔What is Specific Heat? - ✔✔Specific heat is the heat absorbing capacity of a
substance, which means the amount of heat required to change a unit quantity of a
substance by 1 degree in temperature.
QUESTIONS AND SOLUTIONS RATED A+
✔✔Grid systems should include what four components? - ✔✔Primary feeders
Secondary feeders
Distributers
and Circulating Feed
✔✔Where are Private Water supplies usually found? - ✔✔Large commercial, industrial,
or institutional properties
✔✔What three thingsaffet the performace of a water piping system? - ✔✔Piping
materials
Pipe Diameter
Piping arrangements
✔✔What are generally the materials used in piping? - ✔✔Cast Iron
Ductile Iron
asbestos cement
Steel
Polyvinyl Chloride (PVC)
Plastic
Concrete
✔✔3 types of Piping arrangements - ✔✔Loop system
Grid System
Dead-end system
✔✔What do water main valves do? - ✔✔They provide the ability to isolate portions of
the systems
✔✔What are the two types of fire hydrants? - ✔✔Wet Barrel
Dry Barrel
✔✔What is the NFPA code for water supply systems? - ✔✔NFPA 1142
✔✔Third principle of friction loss - ✔✔
✔✔ What are the ways water can extinguish fire? - ✔✔Primary way- cooling/ absorbing
heat from the fire
Smothering- occurs when oxygen is excluded from the fire
✔✔What is Specific Heat? - ✔✔Specific heat is the heat absorbing capacity of a
substance, which means the amount of heat required to change a unit quantity of a
substance by 1 degree in temperature.
