Deck 5: Water and Wasterwater Systems

Question 1

On average, purchase costs account for about __________ percent of water costs; disposal costs account for the remaining __________ percent.

A)90; 10
B)75; 25
C)50; 50
D)20; 80

Answer 1

C

Question 2

The balance between acidity and alkalinity in a swimming pool is established by using a test kit to measure the:

A)pH of the water.
B)algae content of the water.
C)amount of leaching from the pool's plaster/tile walls.
D)amount of sunlight that reaches the bottom of the pool.

Answer 2

A

Question 3

A restaurant's storm sewer system disposes of:

A)rainwater.
B)waste water from the restaurant itself.
C)gray water.
D)a and c

Answer 3

A

Question 4

Which of the following systems is generally the most expensive option for heating water?

A)oil
B)natural gas
C)steam
D)electric resistance

Question 5

The device that submeters water used for cooling towers, irrigation, and swimming pools, so that this water can be deducted from the property's water disposal (sewer) bill, is known as a:

A)backflow preventer.
B)deduct meter.
C)water separator.
D)water trap.

Question 6

Water is "softened" by:

A)replacing hardness-causing minerals with sodium.
B)adding calcium and magnesium to the water.
C)heating it.
D)adding low levels of manganese and iron to the water.

Question 7

Water-filled sections of pipe within a building's wastewater system that keep sewer gases and odors from entering the building are called:

A)risers.
B)gas-flow preventers.
C)sanitary pipes.
D)traps.

Question 8

How do heat pump water heaters work?

A)They burn a fuel and transfer the heat that is generated to the water being heated.
B)They extract heat from the air within a space, the outside air, or a water source.
C)They run steam through a coil that transfers the heat from the steam to the water.
D)They compress the water until the water reaches the desired temperature.

Question 9

Which of the following statements about mixing valves is true?

A)They are usually not part of a guestroom water system component (such as a shower control valve).
B)They are used to mix untreated water with the chemicals that make the water drinkable.
C)They are designed to protect water users from being burned or scalded by hot water.
D)They are used in hotel swimming pools to properly mix the chemicals that make the pool water safe for swimming.

Question 10

The owner of the St.Paul Motor Inn in Minnesota is expanding the property and wants to install a new indoor swimming pool.To prevent heat loss, the owner plans to install the pool in as air-tight an enclosure as possible.As the facilities manager at the inn, you have been researching the swimming pools and pool heaters on the market.Based on what you've learned, you decide to recommend that the property should not purchase a directly fired heater for the new indoor pool, because directly fired water heaters:

A)cause algae overgrowth, which leads to severe maintenance problems.
B)cannot maintain a warm-enough pool temperature in your cold northern climate.
C)have been blamed for incidents of carbon monoxide poisoning when used for indoor pools.
D)are likely to provide uneven heating of the pool water, which would make swimmers uncomfortable.