WT 6
問題一覧
1
A pH below 7 indicates _____.
Acidic
2
Suspended solids are removed from the water by gravity settling and deposition
Sedimentation
3
Pipes installed to provide flow of air to or from drainage system or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure
Vent System
4
What might be the reason why riprap is placed at the end of a storm drainage pipe?
to dissipate the energy of water
5
Size of downspout for a 350sqm roof area in a place with prevalent rainfall rate of 102 mm.
102 mm
6
The hot water system that is an efficient type, generally used in building of extreme heights.
Overhead Feed and Gravity Return System
7
When the well is excavated in the confined aquifer, and the water in the well reach over the water table but not on the surface of the earth. Such a well known as an _____.
Artesian Well
8
The type of valve incorporated in corporation stop.
Gate Valve
9
This level of water supply is also referred as communal faucet system.
Level 2
10
The distance between a water heater and the union on the water lines shall not be more than _____.
12"
11
What is the purpose of a weir outlet?
To control the overflow of stormwater
12
What is a treatment for water acidity?
Passing through marble filter
13
The minimum size of a water service pipe is _____.
19 mm
14
When copper and steel contact each other, especially when dampness is present, a chemical action called _____ occurs.
Electrolysis
15
Water Code of the Philippines
PD 1067
16
The presence of ____ causes bad taste and odor in water.
Algae
17
Water above the filter sand that provides hydraulic head for the process
Supernatant
18
Filtration through activated carbon purifier filtration is a correction for the presence of _____ in the water.
Taste or Odor
19
In areas with high rainfall intensity, which driveway material can be prone to flash flood?
asphalt
20
85 Kpa = _____ feet
28
21
Water for domestic use comes from these source except _____.
sea water
22
The pressure required to test water piping.
150% working pressure
23
A sanitary sewer that conveys sanitary waste to a dispersal plant.
Intercepting Sewer
24
It refers to the transmission of pathogens through vehicles such as water, food, and air.
Vehicle
25
The dip tube on a cold-water supply should terminate _____ above the bottom of the tank.
8''
26
The water which comes from lavatories, floor drains, laundry tubs is referred to as _____.
Grey Water
27
Water Quality Guidelines and General Effluent Standards of 2016
DENR AO 2016-08
28
Water connection size for flushometer-tank WC
10 mm
29
DFU of Urinal stall, separate trap
2
30
Which process is mostly associated with purification of water?
Evaporation
31
A tank made of heavy-duty stainless sheet of diameter varying from 60 to 130 cm and not more than 5 meters long.
Storage Tank
32
Characterized by a low Reynold number. This occurs when the fluid flows in infinitesimal parallel layers with no disruption between them.
Laminar Flow
33
The smallest diameter pipe that can be installed in a DWV system is _____.
1 1/4"
34
The potable water system or part thereof shall be filled with water-chlorine solution containing not less than ____ of chlorine and allowed to stand for 3 hours.
200 ppm
35
Heat transfer occurs through electromagnetic waves without involving particles.
Radiation
36
ASTM of PVC Sewer Pipe and Fittings
ASTM D2729
37
The following are physical traits of water except _____.
Dissolved Oxygen
38
Hot water consumption for factories
4 to 6 gpph
39
Most practical pump used for hot water system
Centrifugal Pump
40
A mechanical device used to circulate hot water to the plumbing fixtures. Recommended for large building where difficulty of providing natural circulation of hot water is encountered
Pump Circuit System
41
The method used for transferring heat in a gravity domestic hot-water circulation system.
Convection
42
Where is a stormwater outfall typically found?
rivers
43
Hepatitis B can be transmitted through _____.
Body Fluid Contact
44
What is the area called "zone of saturation" in a well?
the area below the water table
45
Refers to the maximum and minimum pressure at which proper function of the water supply system can be maintained.
Critical Pressure
46
This tank holds a salt solution that flushes the mineral tank, replacing calcium and magnesium ions with sodium.
Brine Tank
47
Agency that set the criteria for the quality of drinking water from meteoric surface or underground sources.
National Standards for Drinking Water
48
A well dug with the use of earth augers
Bored well
49
It is used for measuring pore water pressures. It is also used to measure underground water pressure.
piezometer
50
The transition from the solid phase to the gas phase without passing through an intermediate liquid phase.
Sublimation
WT 1
WT 1
ユーザ名非公開 · 4回閲覧 · 50問 · 2ヶ月前WT 1
WT 1
4回閲覧 • 50問 • 2ヶ月前ユーザ名非公開
WT 2
WT 2
ユーザ名非公開 · 48問 · 2ヶ月前WT 2
WT 2
48問 • 2ヶ月前ユーザ名非公開
WT 3
WT 3
ユーザ名非公開 · 50問 · 2ヶ月前WT 3
WT 3
50問 • 2ヶ月前ユーザ名非公開
WT 7
WT 7
ユーザ名非公開 · 50問 · 2ヶ月前WT 7
WT 7
50問 • 2ヶ月前ユーザ名非公開
WT 8
WT 8
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WT 8
50問 • 2ヶ月前ユーザ名非公開
WT 9
WT 9
ユーザ名非公開 · 50問 · 2ヶ月前WT 9
WT 9
50問 • 2ヶ月前ユーザ名非公開
問題一覧
1
A pH below 7 indicates _____.
Acidic
2
Suspended solids are removed from the water by gravity settling and deposition
Sedimentation
3
Pipes installed to provide flow of air to or from drainage system or to provide a circulation of air within such system to protect trap seals from siphonage and backpressure
Vent System
4
What might be the reason why riprap is placed at the end of a storm drainage pipe?
to dissipate the energy of water
5
Size of downspout for a 350sqm roof area in a place with prevalent rainfall rate of 102 mm.
102 mm
6
The hot water system that is an efficient type, generally used in building of extreme heights.
Overhead Feed and Gravity Return System
7
When the well is excavated in the confined aquifer, and the water in the well reach over the water table but not on the surface of the earth. Such a well known as an _____.
Artesian Well
8
The type of valve incorporated in corporation stop.
Gate Valve
9
This level of water supply is also referred as communal faucet system.
Level 2
10
The distance between a water heater and the union on the water lines shall not be more than _____.
12"
11
What is the purpose of a weir outlet?
To control the overflow of stormwater
12
What is a treatment for water acidity?
Passing through marble filter
13
The minimum size of a water service pipe is _____.
19 mm
14
When copper and steel contact each other, especially when dampness is present, a chemical action called _____ occurs.
Electrolysis
15
Water Code of the Philippines
PD 1067
16
The presence of ____ causes bad taste and odor in water.
Algae
17
Water above the filter sand that provides hydraulic head for the process
Supernatant
18
Filtration through activated carbon purifier filtration is a correction for the presence of _____ in the water.
Taste or Odor
19
In areas with high rainfall intensity, which driveway material can be prone to flash flood?
asphalt
20
85 Kpa = _____ feet
28
21
Water for domestic use comes from these source except _____.
sea water
22
The pressure required to test water piping.
150% working pressure
23
A sanitary sewer that conveys sanitary waste to a dispersal plant.
Intercepting Sewer
24
It refers to the transmission of pathogens through vehicles such as water, food, and air.
Vehicle
25
The dip tube on a cold-water supply should terminate _____ above the bottom of the tank.
8''
26
The water which comes from lavatories, floor drains, laundry tubs is referred to as _____.
Grey Water
27
Water Quality Guidelines and General Effluent Standards of 2016
DENR AO 2016-08
28
Water connection size for flushometer-tank WC
10 mm
29
DFU of Urinal stall, separate trap
2
30
Which process is mostly associated with purification of water?
Evaporation
31
A tank made of heavy-duty stainless sheet of diameter varying from 60 to 130 cm and not more than 5 meters long.
Storage Tank
32
Characterized by a low Reynold number. This occurs when the fluid flows in infinitesimal parallel layers with no disruption between them.
Laminar Flow
33
The smallest diameter pipe that can be installed in a DWV system is _____.
1 1/4"
34
The potable water system or part thereof shall be filled with water-chlorine solution containing not less than ____ of chlorine and allowed to stand for 3 hours.
200 ppm
35
Heat transfer occurs through electromagnetic waves without involving particles.
Radiation
36
ASTM of PVC Sewer Pipe and Fittings
ASTM D2729
37
The following are physical traits of water except _____.
Dissolved Oxygen
38
Hot water consumption for factories
4 to 6 gpph
39
Most practical pump used for hot water system
Centrifugal Pump
40
A mechanical device used to circulate hot water to the plumbing fixtures. Recommended for large building where difficulty of providing natural circulation of hot water is encountered
Pump Circuit System
41
The method used for transferring heat in a gravity domestic hot-water circulation system.
Convection
42
Where is a stormwater outfall typically found?
rivers
43
Hepatitis B can be transmitted through _____.
Body Fluid Contact
44
What is the area called "zone of saturation" in a well?
the area below the water table
45
Refers to the maximum and minimum pressure at which proper function of the water supply system can be maintained.
Critical Pressure
46
This tank holds a salt solution that flushes the mineral tank, replacing calcium and magnesium ions with sodium.
Brine Tank
47
Agency that set the criteria for the quality of drinking water from meteoric surface or underground sources.
National Standards for Drinking Water
48
A well dug with the use of earth augers
Bored well
49
It is used for measuring pore water pressures. It is also used to measure underground water pressure.
piezometer
50
The transition from the solid phase to the gas phase without passing through an intermediate liquid phase.
Sublimation