Q.1) Best size of pipe connected to 5 sinks?

A. 3"

B. 2 1/2"

C. 2"

D. 4" (Answer)

Q.2) What is used in water pipelines to absorb the shock caused by water hammering?

A. shock regulator

B. air chamber (Answer)

C. water regulator

D. shock absorber system

Q.3) The minimum slope of a building drain?

A. 1/16 in./ft. (Answer)

B. 1 in. / ft.

C. 1/8 in. /ft.

D. in. /ft.

Q.4) This material is used in threaded pipe connections to prevent leakage

A. polymer

B. elastomeric gasket

C. teflon (Answer)

D. structural polyester thread

Q.5) What is the maximum depth of septic tank?

A. 1.10 m

B. 1.20 m

C. 1.50 m

D. 1.80 m (Answer)

Q.6) A pipe fitting having a large radius of curvature?

A. X11.1

B. X11.2

C. X11.3 (Answer)

D. X11.5

Q.7) A toilet bowl in which the flushing water enters through the rim and sipping action

ignited by a water jet draws the contents of the bowl through the tramway?

A. siphon jet (Answer)

B. siphon vortex

C. reverse trap

D. reverse trap

Q.8) The minimum number of water closet unit required for the female population of an

elementary school?

A. 1 per 75

B. 1 per 35 (Answer)

C. 1 per 50

D. 1 per 100

Q.9) A faucet fitted with nozzle curving downward used as a draw-of trap?

A. firehouse

B. bibcock

C. lavatory faucet (Answer)

D. garden hose

Q.10) A drain connecting one or more fixtures to a solid or waste stack?

A. combined drain (Answer)

B. floor drain

C. circuit drain

D. branch drain

Q.11)

Base on the figure

above, which of the following is a 1/8 bend fitting?

A. a

B. d

C. c

D. b (Answer)

Q.12) What should not be permitted to cross a beam?

A. soil pipe (Answer)

B. electrical wiring

C. water pipe

D. AC ducts

Q.13) When water goes up through a vertical pipe, it stops at a certain height. Why?

A. gravity and friction overcomes the pressure and the water slowly stops

B. the pressure inside the pipe equates to the pressure outside the pipe causing the water

to stop at that point where it apnears (Answer)

C. it's own gravity weight counters its speed of going up

D. all things stops

Q.14) The minimum sized of a trap and waste branch for a size of foot bath?

A. 1 1/4 diameter

B. 2 diameter (Answer)

C. 1,1/2 diameter

D. 1 diameter

Q.15) Minimum size of trap of shower drain?

A. 3

B. 4

C. 2 (Answer)

D. 1 1/2

Q.16) In storm drainage system, it is used to prevent aggregates, debris and other unwanted

objects from entering the drainage system?

A. trap

B. catch basin (Answer)

C. FD

D. storm trap

Q.17) The quality of Galvanized Iron pipes are rated by?

A. class

B. schedule (Answer)

C. thickness

D. gauge

Q.18) Womens urinal fixture?

A. washdown

B. flatback

C. feminine stall urinal

D. Bidet (Answer)

Q.19)

A cross fitting

having a slight curve in each of the 90degree transition to channel the flow from branch

pipes in the direction of the main?

A. X11.1

B. X11.6

C. X11.8 (Answer)

D. X11.9

Q.20) The part of a vent line which connects directly with an individual trap underneath or

behind the fixture and extends to the branch or man pipe at any point higher than the

fixture trap?

A. Blow-pipe

B. VTR

C. Back vent pipe (Answer)

D. Soil pipe

Q.21) A pipe that conveys the discharge of water closets or fixtures having similar functions

with or without the discharges from other fixtures?

A. waste pipe

B. soil pipe (Answer)

C. branch pipe

D. drain pipe

Q.22) Best for sanitary pipes?

A. uPVC (Answer)

B. PeX

C. PP

D. GI

Q.23) A pump used to eject sewage or liquid waste?central sewage booster

A. centrifugal pump

B. sump (Answer)

C. rotary pump

D. central sewage booster

Q.24) A plumbing devices designed to intercept most greases and solids before they enter a

wastewater disposal system. Except for one;

A. trap seal (Answer)

B. grease interceptors

C. grease recovery devices

D. grease converters

Q.25) Where will you least place a downspout?

A. at corner of walls

B. inside columns

C. wall hung

D. in between window openings (Answer)

Q.26) A type of coupling or joining device having internal screw threads or nuts with opposite

screws at the end. By turning the internal screws, it is possible to connect two metal rods

and regulate the length and tension of this rods?

A. vice grip

B. union patente

C. turnstile

D. turnbuckle (Answer)

Q.27) A term used to describe pumps that are interconnected with each other?

A. gang

B. series

C. battery (Answer)

D. none

Q.28) Where traps are used to prevent foul odor from coming out. Which of the following does

not have a water trap?

A. kitchen sink

B. lavatory

C. floor drain

D. bidet (Answer)

Q.29) Where should you place soil-pipes for high-rise structures?

A. pipe chase (Answer)

B. partitions

C. RC wall

D. column

Q.30) What is installed in a fixture to alleviate the effects of too much water pressure?

A. water pressure regulator (Answer)

B. back splash

C. water filtration

D. regulator cup

Q.31) During the site inspection, the architect notices that a soil pipe will cross a beam, whats

the best advice he can do?

A. resize the diameter of the soil pipe, enough that can go across the beam without

affecting it

B. it doesn't matter anyway, let the master plumber handle it.

C. drill a hole of the beam, enough diameter that a pipe could go in and pass through. Just

make sure that the hole is precisely in the middle to avoid the bars to be hit in.

D. simply ask to relocate, it's just a pipe anyway (Answer)

Q.32) What is the most efficient tools for cutting cast iron pipe?

A. handsaw

B. hacksaw

C. chisel and hammer

D. snap cutter (Answer)

Q.33) What is use for water treatment in a swimming pool?

A. chloride (Answer)

B. sodium

C. cyanide

D. hydrochlor

Q.34) Allowable slope of sanitary sewer?

A. 1ft of 1 meter

B. 1/2 in of 1 meter

C. 1/4 of 1meter

D. 1/4 of 1 ft (Answer)

Q.35) Prevents water hammer?

A. water meter seal

B. float valve (Answer)

C. check valve

D. air chamber

Q.36) The minimum sized of a trap and waste branch for a pedestal urinal?

A. 2 diameter (Answer)

B. 2 1/2 diameter

C. 3 diameter

D. 4 diameter

Q.37) It is the line in a single diagram that runs from the fuses to the home run?

A. ground wire

B. riser (Answer)

C. main

D. single fuse diagram

Q.38) What type of materials is used for the base of a septic tank?

A. earth base

B. mass concrete

C. lean concrete

D. reinforced concrete (Answer)

Q.39) What is the best fixture for a public comfort room?

A. gate valve

B. flushometer (Answer)

C. faucet

D. none

Q.40) Standard Water pressure from NAWASA?

A. 60psi (Answer)

B. 120psi

C. 30 psi

D. 40 psi

Q.41) Which is not a rule of a thumb when designing a drainage?

A. as much as possible, pipes must run in a straight line

B. underground drainage line should be on top of compacted soil

C. it should be underneath the driveway (Answer)

D. none

Q.42) A pipe which conveys only liquid waste, free of fecal matter?

A. wet vent

B. waste pipe (Answer)

C. vent pipe

D. soil pipe

Q.43) Opening use to received pipes?

A. vertical shaft

B. pipe chase (Answer)

C. ducts

D. raceway

Q.44) What type of pipe is not recommended for water line?

A. copper

B. lead (Answer)

C. GI

D. iron

Q.45) The minimum size of a swimming pool drain?

A. 3dia.

B. 4dia

C. 2dia (Answer)

D. 6dia

Q.46) Where would you locate water distribution pipe farthest from?

A. large trees (Answer)

B. carport

C. drainage

D. water tank

Q.47) Black steel pipe with galvanized malleable fitting is ideal for?

A. oxygen pipe

B. electrical conduit

C. gas pipe (Answer)

D. water Pipe

Q.48) The minimum size of a trap and waste branch for a shower stall?

A. 2 diameter (Answer)

B. 3 diameter

C. 1 1/2 diameter

D. 1 diameter

Q.49) How do we size sewage pits?

A. volume of solid waste only (Answer)

B. volume of liquid waste

C. volume of solid, liquid and storm

D. none

Q.50) A pipe fitting to join two straight lengths of pipes?

A. coupling (Answer)

B. nipple

C. tee

D. elbow

Q.51) Minimum clearance from the floor of pipes for AC units when crossing a hallway or

corridor?

A. 2.1 m

B. 2.2 m

C. 2.3 m (Answer)

D. 2.4 m

Q.52) What is the standard water consumption (gallon/ person/day) used in a 2 story residence?

A. 30-40 (Answer)

B. 40-60

C. 50-80

D. 90-120

Q.53) When there is a low pressure from the water main, what will you use to supply higher

levels?

A. pneumatic pump

B. sump pump

C. jet pump

D. booster pump (Answer)

Q.54) In the given figure, identify the plumbing fixture in label "8"?

A. 2" 1/4 bend

B. 2" trap assembly

C. 2" 1/4 bend

D. 4" closet bend (Answer)

Q.55) Should not be used for a pipe chase?

A. chb

B. drywall (Answer)

C. shearwall

D. double wall

Q.56) What is the color coding of pipes for potable water?

A. cyan

B. green

C. blue (Answer)

D. light blue

Q.57) What property is used to distinguish between potable and sanitary uPVC pipes?

A. thickness

B. nominal diameter

C. outside diameter

D. color (Answer)

Q.58) How do you connect PPRC?

A. mechanical fastener

B. Solvent

C. fusion welding (Answer)

D. coupling

Q.59) What do you call a control valve used to shut off at the water supply to a building in case

of emergency. It is installed at a water service pipe and operated by means of long key

inserted through a curb box?

A. curb cock

B. corp stop (Answer)

C. cock stop

D. emergency cock

Q.60) There are several reasons why soil stacks are not allowed in columns. Which is not a

reason?

A. pipes will interfere with reinforcing bars

B. the size of the columns will be larger

C. cracks and leaks cannot be detected (Answer)

D. the gas emitted will deteriorate concrete

Q.61) What is the typical slope of a waste pipe?

A. 1%

B. 2% (Answer)

C. 3%

D. 4%

Q.62) Water well yield is a factor considered to determine the size of?

A. fixtures

B. electrical wiring

C. water pipe (Answer)

D. pump

Q.63)

An elbow having

lugs for attachment to wall or joist?

A. X12.1

B. X11.5

C. X11.4

D. X11.2 (Answer)

Q.64) What do you call a liquid waste ( without urine/ industrial waste) discharges into the

sewer?

A. gray water (Answer)

B. storm water

C. black water

D. ground water

Q.65) Which plumbing fixture does not have a water-saving feature?

A. lavatory with pop-up

B. 1.5 gallon flush water closet

C. flow limiting feature (Answer)

D. waterless urinal

Q.66)

A tee shaped pipe

fitting for making a three-way joint?

A. X11.8

B. X11.9

C. X11.6

D. X11.4 (Answer)

Q.67) What pipe should not be buried underground?

A. BI pipe

B. polyethylene pipe (Answer)

C. GI pipe

D. none

Q.68) The minimum number of a urinal fixture required for the male population of both

elementary and secondary school?

A. 1 per 40

B. 1 per 50

C. 1 per 60

D. 1 per 30 (Answer)

Q.69) What can be discharge directly to sewer system?

A. buiding sewer (Answer)

B. oil and grease

C. storm water

D. grey water

Q.70) A general term used for any vertical line of soil, waste, or vent piping?

A. stand pipe

B. riser

C. shaft

D. stack (Answer)

Q.71) What is the minimum trap seal?

A. 1.5"

B. 2" (Answer)

C. 2.5"

D. 3"

Q.72) Fluoride as an addictive in water supply is a chemical for?

A. purify

B. coagulant (Answer)

C. disinfectant

D. dental

Q.73) Base on the figure shown, identify the type of closet at leter "A"?

A. siphon-vortex

B. siphon-jet (Answer)

C. wash-down

D. reverse-trap

Q.74) The minimum distance (in meters) of a well from a septic tank?

A. 15 (Answer)

B. 10

C. 25

D. 20

Q.75) An individual vent for a plumbing fixture located at the downstream of a trap?

A. vent pipe

B. back vent (Answer)

C. branch vent

D. vent through roof

Q.76) Minimum height of siamese connection from ground line?

A. 38mm (Answer)

B. 45mm

C. 500mm

D. 600mm

Q.77) The minimum size of trap and waste branch for a bidet?

A. 3 diameter

B. 1- 1/2 diameter

C. 2 diameter (Answer)

D. 1 diameter

Q.78) How do you connect 2 hub less cast iron pipes?

A. coupling

B. elbow

C. structural compression gasket (Answer)

D. polymer compression gasket

Q.79) One of the first steps in the selection of a suitable water supply source is?

A. water (potability) (Answer)

B. topography

C. budgetary cost

D. water (demand)

Q.80) Maximum distance of clean-out?

A. 5 m (Answer)

B. 6 m

C. 10m center to center

D. 15 m

Q.81) Best location to put the soil pipes?

A. drywall

B. 150mm CHB wall

C. pipe chase (Answer)

D. box-up with the column

Q.82) What is used to shut off flow of water during maintenance?

A. check valve

B. angle valve

C. gate valve (Answer)

D. globe valve

Q.83) Valve permitting a gas or liquid to flow in 1 direction?

A. check valve (Answer)

B. globe valve

C. angle valve

D. gate valve

Q.84) What is the color of pipes for steam?

A. light blue

B. gray

C. blue

D. white (Answer)

Q.85) Alternative to the conventional septic tank?

A. aerobic treatment system (Answer)

B. cistern

C. STP

D. landfill

Q.86)

In the figure above,

which is a flange adaptor?

A. A

B. B

C. C

D. D (Answer)

Q.87) Copper pipes are classified as what main pipe?

A. galvanized iron

B. ceramic (Answer)

C. s/s

D. pvc

Q.88)

A tee having a

slight curve in 90degree bend transition to channel the flow from a branch pipe in the

direction of the main?

A. X11.1

B. X11.9

C. X11.6 (Answer)

D. X11.7

Q.89) In plumbing system, if pipes are electrical wires, what are the equivalent of switches?

A. tee

B. floor drains

C. clean out

D. valve (Answer)

Q.90) The prescribe color coding of piping under refrigerating division of all pipes and fittings?

A. white

B. yellow

C. gray

D. black (Answer)

Q.91) The sewage treatment process that involves the use of hydrochloride to kill pathogenic

bacteria?

A. disinfection (Answer)

B. aeration

C. chlorination

D. hydro-chlorine filtration

Q.92)

Base on the figure

above, which of the following is a 1/4 bend fitting?

A. a (Answer)

B. d

C. c

D. b

Q.93)

Base on the figure

shown, Which of the WC is the noisiest?

A. A

B. B

C. C (Answer)

D. D

Explanation The noisiest is washdown. The answer is correct. Try to see the photo again.

Q.94) Kind of pipe not suited to be exposed to ultraviolet rays?

A. PB

B. iron

C. pvc (Answer)

D. gi

Q.95) A pipe fitting to change in one single direction (course) the flow of water:

A. tee

B. cross tee

C. wye

D. elbow (Answer)

Q.96) Where is water meter located?

A. right after the main distribution line connection (Answer)

B. beside the water pump

C. within RROW, right before the property line

D. right side of the water pump or in it's flow direction

Q.97) What is the color of communication line piping?

A. white

B. orange

C. gray (Answer)

D. silver

Q.98) A piece of pipe threaded outside all through out to connect short runs of two pipe fittings?

A. nipple (Answer)

B. supply pip

C. coupling

D. close nipple

Q.99) Level 3 types of water service refers to?

A. artesian well (Answer)

B. individual shallow well hand up installation

C. public faucet

D. individual house pipes- in connection with meter

Q.100)

In the figure

above, which is a reducing socket?

A. A

B. B (Answer)

C. C

D. D

Q.101) Which wall is best suited if soil pipe will run through it?

A. drywall

B. 6" CHB (Answer)

C. shear wall

D. retaining wall

Q.102)

A. A (Answer)

B. B

C. C

D. D

Q.103) Theater or movie houses water requirement is determined or estimated at 5 galloons of water per day for?

A. total numbers of movie goer per day

B. floor area space of auditorium

C. total number of auditorium seat (Answer)

D. box office record

Q.104) What is the principle of governing the size of pipes in designing plumbing systems?

A. the longer the pipes length to the fixture, the lesser the pressure; the shorter the pipes

length, the greater the pressure is

B. the bigger the pipes diameter, the lesser the pressure; the smaller the pipes diameter ,

the greater the pressure is (Answer)

C. the smaller the pipes diameter the lesser the pressure; the bigger the pipes diameter,

the greater the pressure

D. slopes is the primary consideration and sizes will be considered secondary

Q.105) In high rise buildings, why is there a need to resize water supply pipes?

A. because different fixtures have different supply attachments

B. to use up the difference in pressure from the service to the supply fixtures (Answer)

C. pipes are like trees, main branch are bigger and becomes smaller at ends for carrying

wind loads and storms

D. Pipes having bigger size have bigger pressure and reduce the size for distribution to

fixture for lower pressure

Q.106) There is a septic tank installed on top of a rock by seashore. The tank is exposed on low

tide and covered in sea water during high tide. Which of the following would be an

appropriate water proofing for it?

A. waterproof all surface (Answer)

B. waterproof all interior surface except the floor

C. waterproof all interior surface except the ceiling

D. waterproofing is not necessary, it will just add cost

Q.107) Where are storm sewer usually placed?

A. under the sidewalk on narrow road and under the road on wide road

B. near the curb (Answer)

C. at the center of the road

D. none

Q.108) How could you differentiate between a soil and waste pipe when laid side by side?

A. color

B. material and texture finish

C. thickness

D. diameter (Answer)

Q.109) According to NBC, pipe support should be every,

A. 3 m (Answer)

B. 1.5 m

C. 2 m

D. 4 m

Q.110) In a location where there is no provision for drainage line, what is the next best thing?

A. store waste in the tank and dispose in sanitary fill (Answer)

B. use drain tiles connected to open field

C. connect to the nearest creek

D. any of the above

Q.111) Can you embed a 4" diameter pipe in a 150 wall?

A. no (Answer)

B. yes

Q.112) A pipe fitting shape like letter S?

A. P-trap

B. Double Bend

C. U-trap (Answer)

D. St. Bend

Q.113) A sewage treatment that includes the exposure to air?

A. aerator (Answer)

B. air-dehumidification treatment system

C. exposed STP system

D. SW treatment system

Q.114) What do you call a water-tight receptacle used to store household waste?

A. pit

B. septic vault (Answer)

C. stp

D. house drain

Q.115) A common ingredients for water disinfectant, except for ?

A. Trichlor

B. bichlor (Answer)

C. dichlor

D. Trichloro-S-Triazinetrione

Q.116) Plumbing permit shall be invalid if work has not commenced after a period of?

A. 6 months

B. 1 year (Answer)

C. 180 days

D. none