1.
- A kind
of G.I. fitting that has one end external threads, while the other end has
internal threads.
Correct Answer
A. STREET ELBOW or TEE
2.
- A kind
of G.I. fitting used as a reducer from a bigger diameter to a lesser
diameter.
Correct Answer
A. Bushing
3.
- A stop
valve in a service pipe close to its connection with a water main.
Correct Answer
B. Corporation cock
4.
- One
end is 0.30M and the other end is 0.90M long. This prevents the pipe from snapping (breaking?)when
the soil settles. [U-shaped?]
Correct Answer
A. Gooseneck
5.
- refers
to the public water system laid underground along the streets where the
house service is connected.
Correct Answer
C. Water main
6.
- These
valves are used when it is desired that the flow through a pipe be always
in one direction and there is a possibility of a flow taking place in the
opposite direction. One type has a
pivoted flap which is readily pushed open by the pressure of water from
one side but is tightly closed by the force of a reverse flow.
Correct Answer
B. Checkvalves
7.
- To
insure no leakage, a G.I. pipe when threaded has to use lead liquid or ______ tape around the thread before tightening the fittings.
Correct Answer
B. Teflon
8.
1.
A slow draining
of water from a fixture down a plumbing system indicates a poor venting system.
This poor venting system is caused by:
Correct Answer
C. C. Wrong choice of vent type
9.
1.
A term used for a
pipe extension of not more than 2 feet in length, installed at any stack or
branch of a plumbing rough-in for the purpose future tap.
Correct Answer
A. A. tail piece
10.
1.
A type of pump
which comprises essentially an impeller or set of vanes enclosed in a housing
or casing close coupled with the pump motor. Its fundamental principle is it
adds energy in the form of velocity to an already flowing liquid.
Correct Answer
B. B. centrifugal pump
11.
1.
A vent used in a
battery of plumbing fixtures where the vent is installed in front of the last
fixture of the battery.
Correct Answer
B. B. circuit vent
12.
1.
Any pipe in the
plumbing system provided to ventilate a house drainage system and to prevent
trap siphonage and back pressure.
Correct Answer
B. B. vent pipe
13.
1.
Single lever
valves used in kitchen sink and lavatory faucets or at shower valves has gain
popularity in plumbing installation today. This is because these valves are
beautiful and are maintenance-free. These valves work by the principle of a:
Correct Answer
C. C. ball valve
14.
1.
What is a type of
vent applied on installations with multi-branch interval where the vertical
vent pipe takes off in front of the first fixture and connects to a main vent
stack?
Correct Answer
B. B. Yoke vent
15.
-can be constructed with hand tools or power tools-depth of about 15 meters (50 ft)-can have the greatest diameter that a space may allow
Correct Answer
A. DUG WELLS
16.
. The vertical supply
pipe which extends upward from one floor to the next is called a_________
Correct Answer
B. Riser
17.
. Water is treated by giving ________________ to
kill the harmful bacteria present and to cure the turbid taste or “mud taste”,
remove clay, salts, iron, etc. commonly used treating liquids is chlorine.
Correct Answer
B. Chemical treatments
18.
. A reservoir, tank
or vessel for storing or holding water or other liquids
Correct Answer
A. CISTERN/ CISTERN TANK
19.
. Water is
distributed from the normal water pressure coming from the public water main,
for low rise buildings.
Correct Answer
A. UPFEED SYSTEM
20.
. By gravity, water
is distributed from overhead water tanks and is supported either by structural
frames or on the roof decks. Fixtures
are below the gravity tank. These
elevated tanks are installed when normal water supply from main public service
pipes is not frequent and when normal pressure from city main is not enough to
force the water to the highest fixtures.
Correct Answer
B. DOWN FEED SYSTEM
21.
1.
A device used to
control an incoming high water pressure into the water distribution system by
mechanical means so as to bring it to a working pressure of 80 psi.
Correct Answer
C. C. Pressure reducing valve
22.
1.
A female GI pipe
reducer fitting used in a straight pipe connection where the fitting’s both
ends are threaded inside
Correct Answer
A. A. coupling reducer
23.
1.
A female GI
threaded pipe reducer fitting use to connect a reducing branch from a main
water distribution.
Correct Answer
B. B. tee reducer
24.
1.
A female GI
threaded pipe reducer fitting use to connect a reducing branch pipe at an
angle.
Correct Answer
A. A. Elbow reducer
25.
G1.
A fitting
installed at a branching tee from a horizontal soil branch to a horizontal
waste branch.
Correct Answer
D. D. 4”x4” Wye and 4 1/8” bend combination
26.
1.
A residence with
12 family members requires 3.6 cu. meters of cold water daily with peak demand.
What is the maximum hot water probable hourly demand?
Correct Answer
C. C. 120 liters
27.
1.
A suitable and
economical type of water pump for a 200 ft. driven wall to deliver 10gpm
against 200 ft. The Develop Height (TDH) where the motor and pump is located is
at the surface.
Correct Answer
B. B. jet pump
28.
1.
A type of pump
for driven well from 150 ft to 200 ft which works by a principle of venturi
where water of high pressure is pump into the well to draw water upwards
through the return pipe.
Correct Answer
B. B. jet pump
29.
1.
A type of pump
which delivers high water discharge with high pressure drawn from a shallow
source like a cistern, best suited as fire pump or transfer pump. The pump
motor is installed on the surface for easy maintenance coupled with a shaft to
turn the impellers, which is submerged below.
Correct Answer
A. A. centrifugal pump
30.
1.
A type of water
pump with its pump motor installed on the surface attached to a lift and push
rod to activate a submerged piston.
Correct Answer
A. A. reciprocation pump
31.
1.
Branch vents are
required to have at least a slope 1/4” /feet. The purpose of which is:
Correct Answer
D. D. to allow any waste to drain into the drain pipe
32.
1.
In a water
distribution system, locations such as supply pipe to every water heater
requires a full open valve. Which of the following in the list is a full open
valve?
Correct Answer
D. D. angle valve
33.
1.
In a water system
with constant water supply supplying series of plumbing fixtures, water supply
drop is experience when the fixtures in the series are simultaneously opened.
Which poor design in the plumbing system causes this?
Correct Answer
B. B. Insufficiency in the size of the water service and distribution pipe
34.
1.
It is customary
that a full open type of valve is used in several locations in a water
distribution system. Which location in the following list DOES NOT require one?
Correct Answer
A. A. On every hose bibb
35.
1.
Minimum water
delivery in liters per minute for an outlet of a wet standpipe at a residual
pressure or 1.8 kilos per sq. mts.
Correct Answer
A. A. 132 liters per minute
36.
1.
The general term
for the hot or cold water pipes containing potable water
Correct Answer
C. C. hot or cold water line
37.
1.
The location of a
fire hose cabinet connected to a standpipe for buildings shall be at every floor
level above the first floor at:
Correct Answer
C. C. a landing of an enclosed stairway
38.
1.
The maximum
height of a fire service connection from the grade line is ______ cms.
Correct Answer
C. C. 122 cms
39.
1.
The maximum
horizontal developed length between the trap seal and the vertical vent inlet
at the trap arm.
Correct Answer
B. B. 5 feet
40.
1.
The minimum
height of fire service connection from the grade line is ____ cms.
Correct Answer
C. C. 46 cms.
41.
1.
The standard size
of an outlet of a dry standpipe located for each floor is ___mm. diameter.
Correct Answer
D. D. 64 mm (2 1/2”)
42.
1.
The term used to
the main water pipe delivering potable water to a building is called
Correct Answer
A. A. Water service pipe
43.
1.
Water as
delivered by NAWASA is no longer safe for drinking because of several
contaminants from the water source present in the environment. It is now
therefore imperative that water to be safe for drinking has to undergo water
purification in several stages. Because of several contaminants, water
undergoes several stages. What is a stage in water purification, which removes
mineral deposits, salts, heavy metal, totally dissolves solids while some
useful minerals are retained?
Correct Answer
D. D. reverse osmosis
44.
1.
What does PE pipe
stands for?
Correct Answer
A. A. polyethylene pipe
45.
1.
What is a device
installed on top of a pressure tank used to protect against hydrostatic
collapse due to suction or negative pressure resulting from back-siphonage in a
downfeed water distribution system?
Correct Answer
D. D. pressure relief valve
46.
1.
What is a fire
line system without a constant water supply and is equipped with a fire service
inlet and outlet connection and installed exclusively for the use of the Fire
Service?
Correct Answer
C. C. Dry Standpipe
47.
1.
What is a GI
fitting to join two threaded fittings as close as possible but not exceeding 3
inches?
Correct Answer
A. A. Nipple
48.
1.
What is the
minimum size of a trap or branch for a lavatory?
Correct Answer
A. A. 1 1/4”
49.
1.
What is the
minimum size of a trap or branch of a residential kitchen?
Correct Answer
A. A. 1 1/2”
50.
1.
What is the size
of supply valve for tank type water closet?
Correct Answer
C. C. 3/8”