Water
MOBILESupplyWATER
and Drainage Systems
SUPPLY
PRACTICE TEST USAF
MWS FIRE |2026 QUESTIONS AND CORRECT
DETAILED ANSWERS |ALREADY GRADED A+
|2026 LATEST UPLOAD
1. What is the primary function of the horizontal supply main in a building's water
distribution system?
To connect individual fixtures to the drainage system
To serve as the main conduit for distributing water throughout the building
To purify water before it reaches the fixtures
To store excess water for future use
2. Samples for raw water characterization should be collected where?
8-12 inches below the proposed water intake or as close as possible
4-6 inches below the proposed water intake or as close as possible
8-12 inches below the proposed water intake or as far as possible
4-6 inches below the proposed water intake or as far as possible
3. Which type of water heater uses a tank to store heated water for immediate use?
Tankless Water Heater
Solar Water Heater
Storage Water Heater
Heat Pump Water Heater
4. A steel drive-well point is fitted on one end of the pipe section and driven to earth.
Driven well
Drilled well
Bored well
, Dug well
5. A pipe, normally underground, that carries wastewater and refuse is a :
Sewer
Trap
, Stack
Soil pipe
6. What is the primary function of a direct water supply system in relation to cold water
taps?
To provide hot water at a constant temperature
To deliver cold water directly under pressure
To store water for later use
To filter water before distribution
7. This makes use of water to flush and transport the waste material to the collection
system, thus requiring a continuous water supply
Water-reliant systems
Non water-reliant systems
8. What is a characteristic feature of a dug well?
Typically constructed using heavy machinery
Commonly reaches depths of approximately 15 meters
Requires advanced drilling techniques
Primarily used for industrial water supply
9. A pipe or conduit for carrying sewage and wastewater
Sewer
Sewerage
Pipe
Drainage
10. A gravity circulation system works based on the principle of ______ _.
Natural conduction that causes a difference in temperature between the
supply and return.
Conservation of energy, energy in the supply is not lost in the return.
, A difference in density between the water supply and water return.
Pressure in the expansion tank causes a force on the return piping system
causing flow.
11. What is the primary function of a pressure tank in a water supply system?
To filter impurities from water
To store water under pressure for delivery
To increase the temperature of water
To remove excess water from drainage systems
12. In a gravity-fed hot water system, how is hot water delivered to various fixtures within
a building?
By using a force pump to push water upwards
Through a network of pressurized pipes
Via gravitational force from a higher elevation
By utilizing a jetted well system
13. The upper surface of shallow groundwater is called a(n)
aquiclude.
aquifer.
unconfined aquifer.
water table.
14. It is a phenomenon that occurs in a pressurized water supply system when flow is
halted abruptly by the rapid closure of a valve or faucet?
Water hammer
Pressure loss
Friction loss
Air hammer
MOBILESupplyWATER
and Drainage Systems
SUPPLY
PRACTICE TEST USAF
MWS FIRE |2026 QUESTIONS AND CORRECT
DETAILED ANSWERS |ALREADY GRADED A+
|2026 LATEST UPLOAD
1. What is the primary function of the horizontal supply main in a building's water
distribution system?
To connect individual fixtures to the drainage system
To serve as the main conduit for distributing water throughout the building
To purify water before it reaches the fixtures
To store excess water for future use
2. Samples for raw water characterization should be collected where?
8-12 inches below the proposed water intake or as close as possible
4-6 inches below the proposed water intake or as close as possible
8-12 inches below the proposed water intake or as far as possible
4-6 inches below the proposed water intake or as far as possible
3. Which type of water heater uses a tank to store heated water for immediate use?
Tankless Water Heater
Solar Water Heater
Storage Water Heater
Heat Pump Water Heater
4. A steel drive-well point is fitted on one end of the pipe section and driven to earth.
Driven well
Drilled well
Bored well
, Dug well
5. A pipe, normally underground, that carries wastewater and refuse is a :
Sewer
Trap
, Stack
Soil pipe
6. What is the primary function of a direct water supply system in relation to cold water
taps?
To provide hot water at a constant temperature
To deliver cold water directly under pressure
To store water for later use
To filter water before distribution
7. This makes use of water to flush and transport the waste material to the collection
system, thus requiring a continuous water supply
Water-reliant systems
Non water-reliant systems
8. What is a characteristic feature of a dug well?
Typically constructed using heavy machinery
Commonly reaches depths of approximately 15 meters
Requires advanced drilling techniques
Primarily used for industrial water supply
9. A pipe or conduit for carrying sewage and wastewater
Sewer
Sewerage
Pipe
Drainage
10. A gravity circulation system works based on the principle of ______ _.
Natural conduction that causes a difference in temperature between the
supply and return.
Conservation of energy, energy in the supply is not lost in the return.
, A difference in density between the water supply and water return.
Pressure in the expansion tank causes a force on the return piping system
causing flow.
11. What is the primary function of a pressure tank in a water supply system?
To filter impurities from water
To store water under pressure for delivery
To increase the temperature of water
To remove excess water from drainage systems
12. In a gravity-fed hot water system, how is hot water delivered to various fixtures within
a building?
By using a force pump to push water upwards
Through a network of pressurized pipes
Via gravitational force from a higher elevation
By utilizing a jetted well system
13. The upper surface of shallow groundwater is called a(n)
aquiclude.
aquifer.
unconfined aquifer.
water table.
14. It is a phenomenon that occurs in a pressurized water supply system when flow is
halted abruptly by the rapid closure of a valve or faucet?
Water hammer
Pressure loss
Friction loss
Air hammer
