Plumbing 1
ABOUT PLUMBING
- 1.
- A kind of G.I. fitting that has one end external threads, while the other end has internal threads.
- A.
STREET ELBOW or TEE
- B.
Wye
- C.
Elbow
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.
- A.
Bushing
- B.
Reducer
- C.
Fitting
Correct Answer
A. Bushing - 3.
- A stop valve in a service pipe close to its connection with a water main.
- A.
Gate valve
- B.
Corporation cock
- C.
Check valve
- D.
Globe valve
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?]
- A.
Gooseneck
- B.
Corporation cock
- C.
Ball cock
- D.
Long neck
Correct Answer
A. Gooseneck - 5.
- refers to the public water system laid underground along the streets where the house service is connected.
- A.
Main service
- B.
Water source
- C.
Water main
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.
- A.
Gatevalves
- B.
Checkvalves
- C.
Globe valves
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.
- A.
Solvent
- B.
Teflon
- C.
Packaging
- D.
Electrical
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:
- A.
A. Over loaded fixture unit in the soil stack
- B.
B. Change in the atmospheric pressure in the pipe
- C.
C. Wrong choice of vent type
- D.
D. Inadequate drain pipe
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.
- A.
A. tail piece
- B.
B. branch
- C.
C. clean out
- D.
D. stub out
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.
- A.
A. reciprocating pump
- B.
B. centrifugal pump
- C.
C. piston pump
- D.
D. turbine pump
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.
- A.
A. yoke vent
- B.
B. circuit vent
- C.
C. stack vent
- D.
D. relief vent
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.
- A.
A. waste pipe
- B.
B. vent pipe
- C.
C. soil pipe
- D.
D. house trap
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:
- A.
A. gate valve
- B.
B. angle valve
- C.
C. ball valve
- D.
D. globe valve
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?
- A.
A. Relief vent
- B.
B. Yoke vent
- C.
C. Loop vent
- D.
D. Circuit vent
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
- A.
DUG WELLS
- B.
DEEP WELLS
- C.
HOLE WELLS
- D.
FOX HOLE
Correct Answer
A. DUG WELLS -
- 16.
. The vertical supply pipe which extends upward from one floor to the next is called a_________
- A.
Service pipe
- B.
Riser
- C.
Vent
- D.
Stack vent
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.
- A.
Chemical powder
- B.
Chemical treatments
- C.
Bacteria
Correct Answer
B. Chemical treatments -
- 18.
. A reservoir, tank or vessel for storing or holding water or other liquids
- A.
CISTERN/ CISTERN TANK
- B.
WATER TANK
- C.
WATER DAM
- D.
COFERDAM
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.
- A.
UPFEED SYSTEM
- B.
DOWN FEED SYSTEM
- C.
PRESSURE SYSTEM
- D.
DIRECT SYSTEM
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.
- A.
UPFEED SYSTEM
- B.
DOWN FEED SYSTEM
- C.
PRESSURE SYSTEM
- D.
DIRECT SYSTEM
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.
- A.
A. Pressure relief valve
- B.
B. Pressure reducer
- C.
C. Pressure reducing valve
- D.
D. Pressure regulator
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
- A.
A. coupling reducer
- B.
B. bushing reducer
- C.
C. elbow reducer
- D.
D. tee reducer
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.
- A.
A. bell reducer
- B.
B. tee reducer
- C.
C. elbow reducer
- D.
D. coupling reducer
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.
- A.
A. Elbow reducer
- B.
B. Bushing reducer
- C.
C. Coupling reducer
- D.
D. Tee reducer
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.
- A.
A. 4”x2” Wye and 2 1/8” bend combination
- B.
B. 4”x4” Tee
- C.
C. 4”x2” Tee
- D.
D. 4”x4” Wye and 4 1/8” bend combination
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?
- A.
A. 110 liters
- B.
B. 100 liters
- C.
C. 120 liters
- D.
D. 140 liters
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.
- A.
A. sump pump
- B.
B. jet pump
- C.
C. submersible pump
- D.
D. turbine pump
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.
- A.
A. submersible pump
- B.
B. jet pump
- C.
C. jack or piston pump
- D.
D. reciprocating pump
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.
- A.
A. centrifugal pump
- B.
B. submersible pump
- C.
C. jet pump
- D.
D. turbine pump
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.
- A.
A. reciprocation pump
- B.
B. sump pump
- C.
C. jack pump
- D.
D. centrifugal pump
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:
- A.
A. for convenience in installing the pipe
- B.
B. to facilitate air movement with lesser air resistance
- C.
C. for purposes of economy
- D.
D. to allow any waste to drain into the drain pipe
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?
- A.
A. check valve
- B.
B. ball valves
- C.
C. globe valve
- D.
D. angle 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?
- A.
A. Choice in the system of water distribution
- B.
B. Insufficiency in the size of the water service and distribution pipe
- C.
C. Too many fixtures opened simultaneously
- D.
D. Use of PVC or other plastic pipes
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?
- A.
A. On every hose bibb
- B.
B. On water supplies to pressurized tank
- C.
C. On the water service pipe near the source connection
- D.
D. On the main water distribution pipe near the water service
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.
- A.
A. 132 liters per minute
- B.
B. 112 liters per minute
- C.
C. 155 liters per minute
- D.
D. 126 liters per minute
Correct Answer
A. A. 132 liters per minute -
- 36.
1. The general term for the hot or cold water pipes containing potable water
- A.
A. water plumbing pipes
- B.
B. water distribution pipes
- C.
C. hot or cold water line
- D.
D. water supply pipes
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:
- A.
A. storeroom
- B.
B. inside a mechanical/electrical room
- C.
C. a landing of an enclosed stairway
- D.
D. at any private room or rentable space
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.
- A.
A. 120 cms.
- B.
B. 130 cms.
- C.
C. 122 cms
- D.
D. 102 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.
- A.
A. 6 feet
- B.
B. 5 feet
- C.
C. 4 feet
- D.
D. 3 feet
Correct Answer
B. B. 5 feet -
- 40.
1. The minimum height of fire service connection from the grade line is ____ cms.
- A.
A. 50 cms.
- B.
B. 100 cms.
- C.
C. 46 cms.
- D.
D. 35 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.
- A.
A. 51 mm (2”)
- B.
B. 76 mm (3”)
- C.
C. 38 mm (1 1/2”)
- D.
D. 64 mm (2 1/2”)
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
- A.
A. Water service pipe
- B.
B. NAWASA
- C.
C. Main pipe
- D.
D. Water utility pipe
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?
- A.
A. carbon filtration
- B.
B. aeration
- C.
C. ultraviolet radiation
- D.
D. reverse osmosis
Correct Answer
D. D. reverse osmosis -
- 44.
1. What does PE pipe stands for?
- A.
A. polyethylene pipe
- B.
B. polythylene pipe
- C.
C. polyvinyl extra pipes
- D.
D. plastics extra pipe
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?
- A.
A. pressure reducing valve
- B.
B. vacuum breaker valve
- C.
C. air volume control valve
- D.
D. pressure relief valve
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?
- A.
A. Fire Department House Connection
- B.
B. Combination Standpipe
- C.
C. Dry Standpipe
- D.
D. Wet Standpipe
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?
- A.
A. Nipple
- B.
B. None of the three
- C.
C. Union
- D.
D. Coupling
Correct Answer
A. A. Nipple -
- 48.
1. What is the minimum size of a trap or branch for a lavatory?
- A.
A. 1 1/4”
- B.
B. 1 3/4”
- C.
C. 1 1/2”
- D.
D. 2”
Correct Answer
A. A. 1 1/4” -
- 49.
1. What is the minimum size of a trap or branch of a residential kitchen?
- A.
A. 1 1/2”
- B.
B. 1 3/4”
- C.
C. 1 1/4”
- D.
D. 2”
Correct Answer
A. A. 1 1/2” -
- 50.
1. What is the size of supply valve for tank type water closet?
- A.
A. 3/4”
- B.
B. 1/2”
- C.
C. 3/8”
- D.
D. 1”
Correct Answer
C. C. 3/8” -
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Mar 20, 2022Quiz Edited by
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