WorksheetsPractical 10
Total questions: 99
Worksheet time: 50mins
Name
Class
Date
1.
These pipes are shown as a series of units consisting of a long dash and two short dashes.
a)
Vent pipe
b)
Hot water pipe
c)
Cold water pipe
d)
Drain pipe
2.
What pipe is represented on drawings with alternating long and short dashes?
a)
Cold water pipe
b)
Drain pipe
c)
Hot water pipe
d)
Vent pipe
3.
What pipe is represented by a line consisting of a series of short dashes?
a)
Vent pipe
b)
Vacuum pipe
c)
Drain pipe
d)
Gas pipe
4.
What is the minimum gauge number of galvanized sheet metal that could be used as a rainwater downspout or conductor if it is to be located on the exterior side of a low-height building?
a)
Gauge 33
b)
Gauge 26
c)
Gauge 24
d)
Gauge 22
5.
Fixture connections that require the removal of an access panel for servicing are considered
a)
Not accessible
b)
Exposed
c)
Accessible
d)
Readily accessible
6.
Under what Administrative Order is the Philippine Standard for Drinking Water 2007?
a)
No. 0012
b)
No. 0010
c)
No. 0018
7.
Revised effluent regulation of 1990.
a)
DENR DAO 36
b)
DENR DAO 38
c)
DENR DAO 34
d)
DENR DAO 35
8.
Any of various chiefly aquatic, eukaryotic, photosynthetic organisms, ranging in size from single-celled forms to giant kelp.
a)
Protozoan
b)
Algae
c)
Plankton
d)
None
9.
The physical or chemical quality of water that conforms to the appearance, taste, and odor to satisfy consumer's drinking water acceptability.
a)
Acceptability
b)
Conformity
c)
Adequacy
d)
None
10.
The process of adding the element chlorine to water for disinfection to make it fit for human consumption as drinking water.
a)
Sedimentation
b)
Chlorination
c)
Flocculation
d)
Agitation
11.
Water treatment process that promotes the aggregation of small particles into larger particles that can be subsequently removed by sedimentation and/or filtration.
a)
Coagulation
b)
Chlorination
c)
Flocculation
d)
Sedimentation
12.
The length of time water supply is held in direct contact with a treating agent, e.g., chlorine solution.
a)
Detention time
b)
Contact time
c)
Timing
d)
Coagulation time
13.
A general term referring to the introduction of materials not normally found in water that make the water less desirable or unfit for its intended use.
a)
Contamination
b)
Bitter
c)
Sour
d)
Disinfection
14.
A substance used to enhance the cleansing action of water, which acts similarly to soap but is made from chemical compounds rather than fats and lye.
a)
Disinfection
b)
Detergent
c)
Chemical
d)
Allergy
15.
Water treatment designed to remove disease-causing microorganisms. The efficacy of disinfection is often assessed by measuring the coliform group of indicator organisms.
a)
Disinfection
b)
Contamination
c)
Infection
d)
Allergy
16.
Water intended for direct human consumption or use in food preparation. Where high-quality waters are scarce, the quality of water used for other domestic purposes need not be as high as that of drinking water.
a)
Drinking water
b)
Wastewater
c)
Spring water
d)
Seawater
17.
An outflowing of water from a natural body of water or from a sewage treatment facility.
a)
Effluent
b)
Influent
c)
Wastewater
d)
Potable water
18.
Water that occurs below the surface of the Earth, where it occupies spaces in soils or geologic strata.
a)
Surface water
b)
Groundwater
c)
Freshwater
d)
Seawater
19.
Any machine, piping, or tubing part that can attach or connect two or more larger parts in a plumbing system.
a)
Fitting
b)
Valve
c)
Appurtenance
d)
None of these
20.
Minimum penalty for violating RA 9275.
a)
P5,000.00/day
b)
P10,000.00/day
c)
P15,000/day
d)
P20,000.00
21.
In accordance with the IRR of the Clean Water Act of 2004, how much should be the permit fee if an applicant has a discharge volume per day of more than 150 cubic meters/day and the waste has heavy metals?
a)
P3,300.00
b)
P3,500.00
c)
P3,900.00
d)
P3,700.00
22.
A rod-shaped, non-spore-forming gram-negative bacteria capable of growth in the presence of bile salts and able to ferment lactose with the production of acid, gas, and aldehyde within 24-48 hours at 37°C.
a)
Coliform Organisms
b)
Algae
c)
Coliform and Algae
d)
None of the above
23.
_____ refers to the general term referring to the introduction of materials not normally found in water that make the water less desirable or unfit for its intended use.
a)
Pollution
b)
Saturation
c)
Contamination
d)
None of the above
24.
______: The length of time water supply is held in direct contact with a treating agent, e.g., chlorine solution.
a)
Period
b)
Saturation time
c)
Contact time
d)
None of the above
25.
A protected well or a developed spring with an outlet but without a distribution system, generally adaptable for rural areas where the houses are thinly scattered. A Level I facility normally serves 15 to 25 households, and its outreach must not be more than 250 meters from the farthest user. The yield or discharge is generally from 40 to 140 liters per minute.
a)
Level I
b)
Level II
c)
Level III
d)
None of these
26.
A system composed of a source, a reservoir, piped distribution network, and communal faucets, located no more than 25 meters from the farthest house. The system is designed to deliver 40 to 80 liters per capita per day to an average of 100 households, with one faucet per 4 to 6 households. It is generally suitable for rural and urban areas where houses are densely clustered to justify a simple pipe system.
a)
Level I
b)
Level II
c)
Level III
d)
None of these
27.
A system with a source, a reservoir, a piped distribution network, and household taps. It is generally suited for densely populated areas. This level of facility requires a minimum treatment of disinfection.
a)
Level I
b)
Level II
c)
Level III
d)
None of these
28.
Subgroup of coliform bacteria that has a high positive correlation with fecal contamination associated with all warm-blooded animals. These organisms can ferment lactose at 44.50 C and produce gas in a multiple tube procedure (EC Confirmation) or acidity with a Membrane Filter procedure.
a)
Sewage coliform
b)
Fecal coliforms
c)
Excreta coliform
d)
None of these
29.
Can be constructed with hand tools or power tools, a depth of about 15 meters (50 ft), and can have the greatest diameter that a space may allow.
a)
Dug wells
b)
Deep wells
c)
Hole wells
d)
Foxhole
30.
Any physical or chemical process of reducing the concentration of divalent cations (including calcium and magnesium) in the water supply.
a)
Water purification
b)
Water softening
c)
a & b
d)
None of these
31.
The limit of lead content in potable water.
a)
15%
b)
10%
c)
8%
d)
None of these
32.
What is the mercury limit (mg/L) in potable water according to the PNSDW of 2007?
a)
0.01
b)
0.02
c)
0.07
d)
0.001
33.
What is the benzene limit (mg/L) in potable water according to the PNSDW of 2007?
a)
0.01
b)
0.02
c)
0.07
d)
0.001
34.
What is the cyanide limit (mg/L) in potable water according to the PNSDW of 2007?
a)
0.01
b)
0.02
c)
0.07
d)
0.001
35.
What is the minimum volume of a water sample for testing as per the PNSDW of 2007?
a)
120 ml
b)
200 ml
c)
100 ml
d)
80 ml
36.
What do you call the vertical distance between the top dip and the crown weir of a trap?
a)
Overflow
b)
Crown
c)
Invert
d)
Trap seal
37.
Stormwater refers to?
a)
Rainwater, surface runoff
b)
Liquid plus human waste
c)
Waste from laundry, sink, etc.
d)
Domestic sewage
38.
Which fitting or fitting combination is best used at the base of a soil or waste stack?
a)
1/4 bend
b)
2 1/2 bend
c)
Short sweep and 1/4 bend
d)
Wye branch & 1/8 bend
39.
Which of the following testing methods is most recommended for a sanitary piping system?
a)
Hydrostatic test
b)
Water pressure test
c)
Smoke test
d)
Air pressure test
40.
Which type of support may be used on vertical pipes and stacks?
a)
Bracket
b)
Metal strap
c)
Trapeze
d)
Clevis
41.
Which of the following is considered the most efficient type of venting system?
a)
Combination waste and vent
b)
Group vent
c)
Wet vent
d)
Individual vent
42.
Every exposed trap must:
a)
Not be able to retain a large amount of wastewater
b)
Not be provided with a removable cleanout plug
c)
Have inadequate trap seal in order to cause trap seal loss.
d)
Be self-cleaning.
43.
Which of the following is an insanitary type of water closet?
a)
Hopper type
b)
Plunger type
c)
Pan type
d)
All of these
44.
Plastic pipes are manufactured from?
a)
Rubber-based plastic
b)
Thermoset plastic and thermoplastic
c)
Thermoplastic plastic
d)
None of the above
45.
This refers to the supply pipe between the fixture supply pipe and the water distributing pipe.
a)
Building supply pipe
b)
Fixture supply
c)
Water service pipe
d)
None of these
46.
Which of the following materials is not recommended for use in a water supply system application?
a)
Concrete pipe
b)
Plastic pipe
c)
Galvanized steel pipe
d)
Brass pipe
47.
Which of the following affects the flow of water in a pipe?
a)
Size of pipe
b)
Internal surface condition of pipes
c)
Number of turns or changes in direction of pipes
d)
All of these
48.
Which of the following is an objectionable type of trap?
a)
Bell trap
b)
Full S trap
c)
Bag trap
d)
All of these
49.
Which type of filtration process for water is not included?
a)
Diatomaceous earth
b)
Distillation
c)
Pressure sand
d)
Slow sand
50.
What is the minimum required flow pressure for a water closet equipped with a flushometer valve?
a)
8 psi
b)
10 psi
c)
15 psi
d)
25 psi
51.
Where could we find a pop-up waste?
a)
Water closet
b)
Bathtub
c)
Lavatory
d)
Both b and c
52.
What material property characteristic does cast iron pipe have?
a)
Ductility
b)
Malleability
c)
Brittleness
d)
Flexibility
53.
Which joint pipe is commonly used on galvanized steel pipe?
a)
Screwed joint
b)
Flange joint
c)
Welded joint
d)
Solvent cement welded joint
54.
Which of the following is the heaviest galvanized iron pipe?
a)
Schedule 40
b)
Schedule 10
c)
Schedule 60
d)
Schedule 80
55.
Vent stack is also known as?
a)
Stack vent
b)
Main vent
c)
Yoke vent
d)
Vent system
56.
Which of the following tools is used to cut external threads of a pipe?
a)
Pipe threader
b)
Tap
c)
Reamer
d)
Hacksaw
57.
Which of the following tools is used to remove or tighten the head of a plug?
a)
Basin wrench
b)
Pipe wrench
c)
Crescent wrench
d)
Tap
58.
What is the correct order of valves or devices in a water service and building supply system?
a)
Check valve, gate valve, water meter
b)
Water meter, check valve, gate valve
c)
Gate valve, check valve, water meter
d)
Gate valve, water meter, check valve
59.
A typical compression-type tap is generally made of what kind of valve?
a)
Gate valve
b)
Check valve
c)
Globe valve
d)
Butterfly valve
60.
Where do you use a crowfoot?
a)
Vent piping system
b)
Storm drainage system
c)
Water supply system
d)
Sanitary piping system
61.
Galvanized steel pipes are generally measured by their:
a)
Inside diameter
b)
Outside diameter
c)
Number of threads
d)
Developed length
62.
The word P-trap is synonymous with:
a)
Gooseneck
b)
Drum trap
c)
Bell trap
d)
Full S trap
63.
What type of vent is used in conjunction with a loop vent?
a)
Circuit vent
b)
Individual vent
c)
Looped vent
d)
Unit vent
64.
Crimping is the process of ____ fitting to a pipe:
a)
Cutting
b)
Measuring
c)
Threading
d)
Jointing
65.
When brazing, the alloys shall have a melting temperature of at least __ degrees F.
a)
800
b)
840
c)
1000
d)
1200
66.
Two-inch horizontal copper tubing drain pipe shall be supported at:
a)
4-foot intervals
b)
6-foot intervals
c)
10-foot intervals
d)
12-foot intervals
67.
The building drain from the front building may be extended to the rear building when both buildings are located:
a)
On an interior (when a driveway cannot be used)
b)
300 ft from the public sewer
c)
200 ft from the public sewer
d)
On a corner lot
68.
That part of the lowest piping of a drainage system that receives the discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to a point 2 ft. outside the building wall is a:
a)
Building drain
b)
Building sewer
c)
Waste pipe
d)
Soil stack
69.
Fixture connections that require the removal of an access panel for servicing are considered:
a)
Accessible
b)
Readily accessible
c)
Not accessible
d)
Exposed
70.
A room equipped with a shower or bathtub is a:
a)
Toilet room
b)
Bathroom
c)
Shower room
d)
Washroom
71.
A vertical vent that is a continuation of the drain to which it connects is a:
a)
Circuit vent
b)
Relief vent
c)
Continuous vent
d)
Branch vent
72.
A horizontal drain that is sized to provide free movement of air above the flow line of the drain is called a:
a)
Continuous waste system
b)
Durham waste and vent system
c)
Combination waste and vent system
d)
Solvent waste and vent system
73.
The length along the centerline of the pipe and fittings is the:
a)
Diagonal length
b)
Diameter length
c)
Circumferential length
d)
Developed length
74.
A device integrated within an air accumulator vessel that is designed to discharge a predetermined quantity of water to fixtures for flushing purposes is a(an):
a)
Expansion tank
b)
Surge tank
c)
Flushometer tank
d)
Day tank
75.
What do you call the main water pipe that delivers potable water to a building?
a)
Water connector
b)
Water service
c)
Water supply
d)
Water distributor
76.
For a discharge capacity in the excreta drainage system of 1.0 to 1.89 per second, what is its assigned equivalent fixture unit when there is an intermittent flow in the system?
a)
3
b)
2
c)
4
d)
6
77.
What type of valve in a water system combines to protect against excessive temperature and pressure build-ups?
a)
Temperature and pressure relief valve
b)
Stop valve
c)
Tempering valve
d)
Temperature relief valve
78.
What interior pipes are used to convey stormwater from a roof drain to a point of disposal?
a)
Leaders
b)
Conductors
c)
Wet stacks
d)
Stacks
79.
What delivers water under pressure?
a)
Ejector
b)
Sump pump
c)
Pressure controller
d)
Centrifugal pump
80.
What type of sewage has not received any treatment?
a)
Crude
b)
Oxidized
c)
Clarified
d)
Carbonized
81.
Valves up to and including 51 mm in size should be made of what materials?
a)
Galvanized iron
b)
Cast iron
c)
Brass
d)
Copper
82.
What do you call a pipe with adjacent reverse bends and shaped like the letter "S"?
a)
Double bend
b)
Double hub
c)
Increaser
d)
Sanitary cross
83.
What type of valve is used for all the outlets in a standpipe?
a)
Ball
b)
Check
c)
Gate
d)
Globe
84.
What do you call the downward fall of a pipe?
a)
Grade
b)
Inclined
c)
Slope
d)
Slant
85.
From where can liquid waste be directly disposed of into the ground?
a)
Chemical laboratory
b)
Church sacristy
c)
Toilet
d)
Restaurant sink
86.
Which of the following does NOT belong to a sump pump system?
a)
Sump pit
b)
Sump pump
c)
Discharge piping
d)
Hinged covers
87.
What do you call a hemp or old hemp rope soaked in oil or tar to make it waterproof?
a)
Sisal
b)
Manila
c)
Abaca
d)
Oakum
88.
When was NAMPAP registered with the Securities and Exchange Commission?
a)
1925
b)
1942
c)
1937
d)
1935
89.
What tank is integral with a water closet, urinal, or similar fixtures for flushing or removing excrements?
a)
Flush
b)
Septic
c)
Drain
d)
Cistern
90.
How many equivalent water supply fixture units does a flush tank type of water closet for private use have?
a)
4
b)
2
c)
3
d)
5
91.
How do you classify pipes that discharge into a drainage system but are not directly connected to it?
a)
Complex wastes
b)
Indirect wastes
c)
Special wastes
d)
Direct wastes
92.
What do you call an auxiliary vent which provides additional circulation of air in or between a drainage system?
a)
Common vent
b)
Relief vent
c)
Island vent
d)
Branch vent
93.
What type of tube, made of plastic material and colored black, is used as a water service connection from the main to the meter?
a)
ABS pipe
b)
Polyethylene pipe
c)
UPVC pipe
d)
Polybutylene pipe
94.
What is the process by which suspended matter in sewage settles and is deposited by gravity?
a)
Filtration
b)
Clarification
c)
Dilution
d)
Sedimentation
95.
What is a group vent pipe?
a)
Circuit vent
b)
Drain
c)
Continuous vent
d)
Cross connection
96.
When a trench is backfilled, at what intervals must the fill material be compacted?
a)
Every 4 inches
b)
Every 12 inches
c)
Every 6 inches
d)
Every 8 inches
97.
If the potable water supply is being connected to a non-potable water source, with what reduced pressure device should connections be made?
a)
Backflow preventer
b)
Air gap
c)
Vacuum breaker
d)
Double check valves
98.
What do you call a combination of elbows or bends that brings one section of pipe out of line but into a line parallel with the other section of the pipe?
a)
Offset
b)
Crown vent
c)
Drainage turn
d)
Pitch
99.
What pipe conveys potable water from a building supply to a plumbing fixture?
a)
Water Distribution
b)
Water riser
c)
Water line
d)
Water stack
100 %
