Plumbing Systems

Module  1: Domestic Water Distribution Systems   

1.  The water provider typically maintains the main isolation valve controlling the flow of water into the property"s domestic water system.

True  or  False

Module 1: Domestic Water Distribution Systems

2.  The water provider's consumption meter typically measures the amount of water entering the building in _______.

a.  Gallons

b.  Cubic feet

c.  Hundreds of cubic feet

d.  Any of the above

Module 1:  Domestic Water Distribution Systems

3.  When a ______ system is used, water is pumped to storage tanks located above the highest fixture served or near the roof.

a.  Gravity tank and pump

b.  Booster pump

c.  Shock absorber

d.  Expansion tank

Module 1:  Domestic Water Distribution Systems

4.  Water leaving gravity tanks decreases in pressure as it falls.

Module 1:  Domestic Water Distribution Systems

5.  Most pumps used in the domestic water distribution system are _________ pumps.

a.  Positive displacement

b.  Rotary

c.  Diaphragm

d.  Centrifugal

Module 1:  Domestic Water Distribution Systems

6.  Pump curve charts ______.

a.  Plot relationships between pump variables

b.  Describe the capabilities and limitations of pumps

c.  Can help to determine if a pump is operating according to design characteristics.

d.  Allof the above

Module 1:  Domestic Water Distribution Systems

7.  The pump casing is a rotating component that requires periodic replacement.

True  or  False

Module 1:  Domestic Water Distribution Systems

8.  A ______ is a direct connection between the pump shaft and the driver shaft.

a.  Flexible-coupled connection

b.  Bolted flange connection

c.  Closed-coupled connection

d.  None of the above

Module 1:  Domestic Water Distribution Systems

9.  Most properties use multiple booster pumps to ______.

a.  Ensure a consistent supply of water regardless of demand

b.  Add a layer of redundancy in case of pump failure

c.  Allow for pump servicing without interrupting water service to the property.

d.  All of the above

Module 1:  Domestic Water Distribution Systems

10.  All pumps have a means to manually start and stop the driver.

True  or False

Module 1:  Domestic Water Distribution Systems

11.  Which of the following choices is NOT a typical feature of water storage tanks?

a.  24-hour sequencing

b.  High and low water level alarms

c.  Sight glasses

d.  Air gaps

Module 1:  Domestic Water Distribution Systems

12.  Sanitary risers and vent risers do not have isolation valves.

True  or  False

Module 1:  Domestic Water Distribution Systems

13.  A pipe's _______ denotes the normal pressure the pipe is designed to withstand.

a.  Class

b.  Schedule

c.  Standard dimension ratio

d.  None of the above

Module 1:  Domestic Water Distribution Systems

14.  As pipe increases, the relative strengh of the pipe of fitting also increases.

True  or  False

Module 1:  Domestic Water Distribution Systems

15.  Most water distribution piping found in commerial office buildings is made of__________

a.  Metal

b.  PVC

c.  Clay

d.  Glass.

Module 1:  Domestic Water Distribution Systems

16.  Which type of pipe fittings are used when the connections must occasionally be disassembled for maintenace?

a.  Threaded fittings

b.  Bolter flange fittings

c. Welded fittings

d.  Copression fittings

Module 1:  Domestic Water Distribution Systems

17.  Gate valves are not suited for throttling purposed,.

True  or  False

Module 1:  Domestic Water Distribution Systems

18.  Pressure-reducing stations are needed in buildings with booster pump  system but are not neccessary in buildings that feature gravity tanks.

True  or  False

Module 1:  Domestic Water Distribution Systems

19 Pressure-reducing stations are usually located ________.

a.  Near the gravity tanks

b.  Near the intersection of some branch lines and the main supply riser

c.  On every branch line

d.  Under sinks

Module 1:  Domestic Water Distribution Systems

20.  __________ can cause pipes to shake violently against their supports. 

a.  Velocity shock

b.  Victaulic hammer

c.  Hydraulic shock

d.  Hydraulic hammer

Module 2:  Domestic Water Heating Systems

1.  A single property may use more than one type of water hearter to meet all of its domestic hot water needs.

True  or  False

Module 2:  Domestic Water Heating Systems                  

2.  Water must be heated to a minimum temperature of 100 degrees F to kill incubating bacteria colonies.

True  or  False

Module 2:  Domestic Water Heating Systems

3.  140-degree F water can cause a third degree burn in ______.

a.  About 1 second

b.  Less than 3 seconds

c.  Less than 5 seconds

d.  About 30 seconds

Module 2:  Domestic Water Heating Systems

4.  Which of the following locations is MOST likely to require water heated to a temperature of 180 degrees F?

a.  Lavatory sinks

b.  Commercial dishwashers

c.  Hose bibs

d.  Tenant showers

Module 2:  Domestic Water Heating Systems

5.  The purpose of  a _______ is to ensure that water is heated before leaving the tank by forcing cold water to the bottom of the tank.

a.  Cold water inlet

b.  Thermostat

c.  Sacrificial anode

d.  Dip tube

Module 2:  Domestic Water Heating Systems

6.  When the internal pressure or temperature rises above a safe operating level for the water heater, a safety feature known as the _____ is actuated to relive the tank pressure and water temperature.

a.  Pressure and temperature relief valve

b.  Thermocouple

c.  Infrared sensing device

d.  None of the above

Module 2:  Domestic Water Heating Systems

7.  Which of the following components in NOT included in the construction of an electric water heater?

a.  Supply line

b.  Holding tank

c.  Exhaust flue

d.  Thermostat

Module 2:  Domestic Water Heating Systems

8.  Gas water heaters often utilize which of the following safety features?

a.  Pressure and temperature relief valve

b.  Thermocouple

c.  Infrared sensing device

d.  All of the above

Module 2:  Domestic Water Heating Systems

9.  Hines-managed properties utilize gas water heaters more commonly than electric water heaters.

True  or  False

Module 2:  Domestic Water Heating Systems

10.  Gas water heaters require a continuous source of air for combustion.

True  or  False

Module 2:  Domestic Water Heating Systems

11.  A(n)________ consists of adjacent liquid-filled plates or tubes surrounded by liquid to transfer heat.

a.  Electric water heater

b.  Gas water heater

c.  Heat exchanger

d.  Tankless water heater

Module 2:  Domestic Water Heating Systems

12.  Which of the following is NOT used as a heat source for a heat exchanger?

a.  Resistance-type immersion heating element

b.  Steam from a community energy system

c.  Hot water from a central plant boiler

d.  None of the above

Module 2:  Domestic Water Heating Systems

13.  The use of storage tanks in conjunction with heat exchangers depends on the demand for hot water.

True  or  False

Module 2:  Domestic Water Heating Systems

14.  A high-capacity tankless water heater is the most common type of water heating system used to supply hot water for base-building services. 

True  or  False

Module 2:  Domestic Water Heating Systems

15.  A tankless water heater heats water only on demand and immediately delivers the hot water to the end-use device.

True  or  False

Module 2:  Domestic Water Heating Systems

16.  Circulation systems can be utilized in conjunction with water heaters to ___________.

a.  Keep hot water available at end-use devices

b.  Alleviate the need to drain the cooled water from the supply line to get hot water

c.  Reduce the number of water heaters required to supply a building

d.  All of the above

Module 2:  Domestic Water Heating Systems

17.  Circulation pumps may be controlled by a _________.

a.  Time clock

b.  Flow switch

c.  Pressure sensor

d.  Pressure regulator

Module 3:  Plumbing Fixtures and Devices

1.  Siphoning toilets use less water than non-siphoning toilets.

True  or  False

Module 3:  Plumbing Fixtures and Devices

2.  A non-siphoning toilet is also referred to as a _______ toilet. 

a.  Jet

b.  Washdown

c.  Blowdown

d. Cantilever

Module 3:  Plumbing Fixtures and Devices

3.  In the United States, the Energy Policy Act of 1992 mandates that the common flush toilet must use no more than _______ U.S.  gallons of water per flush. 

a.  1.28

b.  1.6

c.  2.6

d.  None of the above

Module 3:  Plumbing Fixtures and Devices

4.  Low-flow toilets permit the user to choose between two amounts of water depending on wherher the waste is liquid or solid. 

True  or  False

Module 3:  Plumbing Fixtures and Devices

5.  A tank system with a pressure-assist valve uses a pressure tank located within its main tank to assist with flushing.

True  or  False

Module 3:  Plumbing Fixtures and Devices

6.  Since ________ valves connect directly to the water supply, the connection pipe from the flush valve to the basin has a vacuum breaker installed to protect against backflow.

a.  Flapper

b.  Pressure-assist

c.  Cartridge

d.  Flushometer

Module 3:  Plumbing Fixtures and Devices

7.  Drainpipes on basins accessible to users with disabilities must be insulated to comply with ADA requirements.

True  or  False

Module 3:  Plumbing Fixtures and Devices

8.   A ________ faucet has separate handles connected to cylindrical stems.  When the handles are turned, the stems are raised or lowered.

a.  Disc

b.  Cartridge

c.  Ball

d.  Compression

Module 3:  Plumbing Fixtures and Devices

9.  Drinking fountains with self-contained refrigeration systems cool the water at one or more locations for distribution to drinking fountains at other locations.

True  or False

Module 3:  Plumbing Fixtures and Devices

10.  During an ice machine's _________ cycle, the temperature of the evaporator plates is raised until the ice detaches from the plates.

a.  Fill

b.  Freeze

c.  Harvest pump-out

d.  Harvest

Module 3:  Plumbing Fixtures and Devices

11.  __________ regulations require eyewash stations and emergency showers in areas of a property where the eyes or body of a person may be exposed to injurious corrosive materials or biological or chemical substances.

a.  Occupational Safety and Health Admisistration (OSHA)

b.  American Society of Mechanical Engineers (AMSE)

c.  American National Standards Institute (ANSI)

d.  U.S. Department of Interior (DOI)

Module 3:  Plumbing Fixtures and Devices

12.  The term WATER HARDNESS refers to the level of ______ found in the water supply.

a.  Sulfur

b.  Hazardous materials

c.  Unwanted minerals

d.  All of the above

Module 3:  Plumbing Fixtures and Devices

13.  Hard water _________.

a.  has a hardness of 7 grains/gallon or greater

b.  Forms a scale of calcium and magnesium that can clog pipes, seize valves, and inhibit heat transfer

c.  Has a tendency to coagulate rather than break down soap

d.  All of the above

Module 3:  Plumbing Fixtures and Devices

14.  During a water softening system's __________ phase, water flow through the resin tank reverses to rinse the beads and flush sediment into the drain.

a.  Backwash

b.  Recharge

c.  Rinse

d.  None of the above

Module 4:  Sewer and Storm Water Systems

1.  The property's sewer system utilizes a sump station to remove sewage from all levels of the building located above the municipal sewer line.

True  or  False

Module 4:  Sewer and Storm Water Systems

2.  What is the primary purpose of the vent system?

a.  To move water from the building's perimeter to the municipal storm system.

b.  To expel air and gases from the sewer system piping

c.  To provide access to the interior of sewer system piping

d.  To Filter materials that should not enter the municipal sewer or storm water lines

Module 4:  Sewer and Storm Water Systems

3.  Sysmptoms of an air-locked or vapor bound sewer system include:

a.  Sewage discharging into the storm system

b.  Fouled piping, controls, sensors, and/ or cables

c.  Sewage discharging back into the source devices

d.  All of the above

Module 4:  Sewer and Storm Water Systems

4.  Municipal storm water systems typically release waste to _________.

a.  A subsoil drainage system

b.  A storm water riser with branch piping

c.  A municipal waste treatment facility

d.  Natural waterways without treatment

Module 4:  Sewer and Storm Water Systems

5.  Traps used in conjunction with plumbing fixtures that drain to the sewer system prevent which of the following?

a.  An air-locked or vapor bound system

b.  Sewer system blockages

c.  Odors from entering occupied spaces

d.  Slowing draining waste

Module 4:  Sewer and Storm Water Systems

6.  The water used to seal traps can evaporate over time, especially in areas where drain use is infrequent.

True  or  False

Module 4:  Sewer and Storm Water Systems

7.  The majority of cleanouts are installed in vertical stacks because blockages are more common in the main vertical piping.

True  or  False

Module 4:  Sewer and Storm Water Systems

8.  Which tenant use would most likely require an interceptor?

a.  A busy full-service restaurant

b.  Employee showers

c.  A small tenant kitchenetee

d.  All of the above

Module 4:  Sewer and Storm Water Systems

9.  Waste collected above the municipal sewer and storm lines flows to below-grade sump stations before it is forced into municipal lines via pumps. 

True  or  False

Module 4:  Sewer and Storm Water Systems

10.  In what part of the building are sump pits most likely located?

a.  The main utility vault

b.  The roof

c.  The basement

d.  The garage

Module 4:  Sewer and Storm Water Systems

11.  A sewage sump station that contains grease is an indication that:

a.  A grease trap in the system is not functioning properly

b.  The float controls in the sump station are not working properly

c.  All of the above

d.  None of the above

Module 4:  Sewer and Storm Water Systems

12.  A vertical pump utilizes a motor and pump assembly contained within one sealed housing.

True  or  False

Module 4:  Sewer and Storm Water Systems

13.  The housing of a submersible pump is submerged in the pit, and the motor is mounted to a plate above the water level.

True  or  False

Module 4:  Sewer and Storm Water Systems

14.  When pumps are used in sewer sump pits, they are equipped with impellers that provide cutting, chopping, or grinding action to assist with removal of solids.

True  or  False

Module 4:  Sewer and Storm Water Systems

15.  A __________ typically has several sleeve bearings located along the shaft.

a.  Submersible pump

b.  Vertical pump

c.  Sump pit check valve

d.  All of the above

Module 4:  Sewer and Storm Water Systems

16.  Typically found in older installations, ______ tend to close quickly and forcibly upon reversal of flow, thereby increasing the potential for water hammer.

a.  Single-disc swing check valves

b.  Double-disc swing check valves

c.  Silent check valves

d.  Check sleeves

Module 4:  Sewer and Storm Water Systems

17.  Because their discs will not seal if they land against debris, _______ are used maninly with storm water systems.

a.  Single-disc swing check valves

b.  Double-disc swing check valves

c.  Silent check valves

d.  Check sleeves

Module 4:  Sewer and Storm Water Systems

18.  Because they contain no mechanical components, ______ are able to seal around trapped debris.

a.  Single-disc swing check valves

b.  Double=disc swing check valves

c.  Silent check valves

d.  Check sleeves

Module 4:  Sewer and Storm Water Systems

19.  Retention and detention basins are more common at suburban properties than at properties in central business districts.

True  or  False

Module 5:  Landscape Irrigation Systems

1.  Why are landscape irrigation systems divided into zones?

a.  To make troubleshooting easier

b.  To maintain sufficent water pressure

c.  So that groups of plants can be watered based on similar plantmoisture needs

d.  All of the above

Module 5:  Landscape Irrigation Systems

2.  A time clock will open and close the valve that controls water flow to a zone based on real-time weather information.

True  or  False

Module 5:  Landscape Irrigation Systems

3.  The building automatic control system can be programmed to open and close the supply valve to a zone based on the time of day.

True  or  False

Module 5:  Landscape Irrigation Systems

4.  Landscape irrigation systems may be supplied by _______.

a.  Reclaimed water

b.  Domestick water

c.  Storm or surface water

d.  All of the above

Module 5:  Landscape Irrigation Systems

5.  Interior landscape irrigation piping is typically made of metal, and exterior piping is typically made of PVC.

True  or  False

Module 5:  Landscape Irrigation Systems

6.  Water remains in irrigation system piping until a valve opens to permit water flow through the delivery mechanism.

True  or  False

Module 5:  Landscape Irrigation Systems

7.  All of the following types of irrigation nozzles are examples of high-volume delivery mechanisms EXCEPT ______.

a.  Spray nozzle

b.  Rotary nozzle

c.  Misting nozzle

d.  Bubbler nozzle

Module 5:  Landscape Irrigation Systems

8.  Which delivery mechanism is least likely to be used in conjunction with an automated landscape irrigation system?

a.  Micro sprinkler

b.  Rotary nozzle

c.  Soaker hose

d.  Garden hose

Module 5:  Landscape Irrigation Systems

9.  Which area of the United States is most llikely to require a winterization process that involves purging the system with compressed air?

a.  Miami, FL

b.  Cleveland, OH

c.  Houston, TX

d.  Los Angeles, CA

Module 5:  Landscape Irrigation Systems

10.  When winterizing the irrigation system, which step is preformed first?

a.  Drain the backflow prevention device

b.  Drain the system

c.  Isolate the main water supply

d.  Purge the system with compressed air

Module 6:  Water Wells and Dewatering Systems

1.  Water wells can serve as the primary or backup water supply for systems and devices that do not require potable water.

True  or  False

Module 6:  Water Wells and Dewatering Systems

2.  Well water can be used to supply all of the following systems or devices EXCEPT _________.

a.  Landscape irrigation systems

b.  HVAC makeup water systems

c.  Toilets or urinals

d.  Water heating systems

Module 6:  Water Wells and Dewatering Systems

3.  Since well water is less expensive than treated municipal water, it receives preference for unse in _______.

a.  HVAC makeup water systems

b.  Sanitary systems

c.  Landscape irrigation systems and decorative fountains

d.  All of the above

Module 6:  Water Wells and Dewatering Systems

4.  Since a well typically draws water from a natural groundwater source, the amount of water used by a property may be restricted by local authorities and state laws governing subsidence control and resource conservation.

True  or  False

Module 6:  Water Wells and Dewatering Systems

5.  Dewatering is the process of actively removing water from the soil around the building's perimeter  and below the foundation system for the purpose of _____  .

a.  Supplying all non-potable water system  and devices

b.  Water conservation

c.  Controlling the building's water infiltration

d.  All of the above

Module 6:  Water Wells and Dewatering Systems

6.  Ejector dewatering systems improve the stability of fine soils by using high-pressure water flow to create a _______ that draws groundwater from the aquifer.

a.  Siphon jet

b.  Partial vacuum

c.  Venturi nozzle

d.  Perforated trench

Module 6:  Water Wells and Dewatering Systems

7.  A subsoil drainage system reuses extracted groundwater during the dewatering process.

True  or  False