MASTER PLUMBER PAST BOARD EXAM QUESTIONS SET 3

Which of the following is NOT a basic component to a plumbing system?

A. The drainage and vent system

B. Water service pipe and distributing pipes

C. Pollution Control

D. Plumbing fixtures

C

What do you call the installation of all pipes in the plumbing system that is in

partitions and under floors?

A. Tempering

B. Roughing-in

C. Concealed plumbing

D. Fixturing

B

What will be the basis in the design of water piping system in localities where the water pressure is fluctuating all throughout the day?

A. Time of the day when the maximum pressure is available

B. Number of households in the area using water

C. Minimum pressure available

D. Maximum pressure available

C

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

D

Through what means must waste of food handling equipment discharge?

A. Vertical gap

B. Grease interceptor

C. Indirect Waste pipe

D. Direct connection

C

What is a group vent pipe?

A. Circuit vent

B. Drain

C. Continuous vent

D. Cross connection

A

When was NAMPAP registered with the Securities and Exchage Commission?

A. 1925

B. 1942

C. 1937

D. 1935

D

A horizntal 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

C

What should be made of connections between a potable water supply and an

automatic fire sprinkling machine?

A. With vacuum breaker

B. With relief valves

C. With check valve

D. With valve regulator

C

Q.10) What type of concealed connections on fixtures shall be provided with access panel or utility at least 0.3m in its least dimension for easy inspection and repair?

A. Hubless

B. Flanged

C. Slip joint

D. Ball and socket

C

Fixture connections that require the removal of an access panel for servicing are considered ____.

A. accessible

B. readily accessible

C. not accessible

D. exposed

A

What is the minimum elapsed time required that the pressurized water be kept

in the pipe system for the water test?

A. 15 min

B. 10 min

C. 30 min

D. 1 hour

A

What is that portion of rainfall or other precipitation which runs off over the

surface of the ground called?

A. Surface water

B. Rain water

C. Run-off water

D. Ground water

A

How many pipes that discharge into a drainage system but which are not

connected directly to the drainage system clasiffied?

A. Complex wastes

B. Indirect wastes

C. Special wastes

D. Direct wastes

B

Which of the following types of work required a plumbing permit?

A. The replacement of a faulty gate valve

B. The relpacement of an electric water heater

C. The clearance of the drain stoppage

D. The replacement of the faucet stem

B

What is a liquid waste that contains animal or vegetable matter in suspension or solution?

A. Sewer

B. Sewage

C. Domestic waste

D. Culinary waste

B

What tank is integral with water closet, urinal, or similar fixtures for flushing or

removing excrements in the fixture?

A. Flush

B. Septic

C. Drain

D. Cistern

A

What must the interceptors used in bottling establishment be capable of

separating from the other solids before discharging he waste into the drainage system?

A. Oil

B. Flammable materials

C. Bottled fluids

D. Broken glass or other solids

D

What must be fitted on a fixture that is equipped with threads for a garden

hose?

A. Check valve

B. Backflow preventer

C. Air gap

D. Vacuum breaker

D

What do you call the downward fall of a pipe?

A. Grade

B. Inclined

C. Slope

D. Slant

A

What are intended to be protected by vents?

A. Fixture outlets

B. Drains

C. Traps

D. Trap seals

D

Which of the following also serves as drains?

A. Relief vents

B. Common vents

C. Wet vents

D. Dry vents

C

What tube is made of plastic material and colored black whose cross-sectional shape is normally oval and is denoted by its outside diameter and is normally used as water service connection from the main to the meter.

A. ABS pipe

B. Polyethylene pipe

C. UPVC pipe

D. Polybutylene pipe

D

What is the minimum height of raised letters on an iron or bronze sign that will

read "Connection to Dry Standpipe"

A. 25 mm

B. 3/4 inch

C. 20 mm

D. 30mm

A

Unless prohited by structural conditions, what is the reference of each vertical

vent pipes before offsetting horizontally to join the stack vent or vent stack?

A. Invert of trap

B. Highest flood level rim of fixture

C. Water level inside the trap

D. Air gap of fixture

B

Which of the following types of traps allowed?

A. Traps which depend upon moving parts to maintain a seal

B. P-traps

C. Crown-vented trap

D. Bell traps

B

What do you call a drainage piping that extends from the trap of a fixture to

appoint connection with another drain pipe?

A. Horizontal stack

B. Branch supply

C. Trap Arm

D. Fixture drain

C

Who was the President of the Republic of the Philippines who signed the

"Plumbing Law of the Philippines"?

A. Joseph Estrada

B. Diosdado Macapagal

C. Ramon Magsaysay

D. Ferdinand Marcos

C

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

A

What do you call the pipe or tubing that connects the outlet of a plumbing

fixture to the trap?

A. Outflow

B. Tailpiece

C. Head Tubing

D. Connector

B

What do you call a combination of elbows or bends which 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

A

What is the standard working pressure for a water heater?

A. 140 psi

B. 125 psi

C. 100 psi

D. 75 psi

B

What do you call a water supply pipe connecting the fixtures with the fixture

branch?

A. Corporation

B. Service

C. Fixture supply

D. Special

C

What delivers water under pressure?

A. Ejector

B. Sump pump

C. Pressure controller

D. Centrifugal pump

D

What is the receptacle wherein liquids are retained for a sufficient period of

time to allow settleable materials to deposit?

A. Catch basin

B. Rainwater tank

C. Cistern tank

D. Weir

A

What device is used to prevent backflow into a potable water supply?

A. Backflow valve drainage

B. Backwater valve

C. Backwater preventer

D. Backflow preventer

D

What screened vent shall be used to vent the covers of gravity storage tank of

potable water supply?

A. Return-bend pipe

B. Upright pipe

C. Horizontal nipple

D. Circuit vent

A

What is represented by a solid line broken with a single dot or dash in piping

diagrams?

A. Cold water

B. Hot water

C. Vent pipe

D. Drainage pipe

A

What interior pipes are used to convey storm water from a roof drain to appoint of disposal?

A. Leaders

B. Conductors

C. Wet stacks

D. Stacks

B

Connections between drain and floor outlet plumbing fixtures must be made

with which of the following?

A. Mechanical joints

B. Electromeric seal

C. Schedule-40 joints

D. Floor flanges

D

What is a recession in a wall for holding pipes and conduits passing from floor

to floor?

A. Vent

B. Court

C. Chase

D. Yard

C

In water supply and distribution, what type of fillway valve should be used to

control or more openings?

A. Ball valve

B. Butterfly valve

C. Globe valve

D. Gate valve

D

What system describes soil or waste system where all pipings are of threaded

pipe, tubing or other such rigid construction using recessed drainage fittings to correspond to the types of piping?

A. Durham

B. Schultz

C. Smith

D. Drake

A

After how many days shall a plumbing permit expire and become null and void if the plumbing works authorized therein have not been started?

A. 365

B. 60

C. 30

D. 120

D

What is the minimum number of water closet for 16 to 35 permanent female

employees in assembly places such as the theaters, auditoriums and convention halls?

A. 2

B. 4

C. 5

D. 3

D

How many threads per inch has a cleanout having a size of 76 mm had?

A. 8

B. 10

C. 5

D. 6

A

How do you call an auxiliary vent which provides additional circulation of air in or between a drainage system classified?

A. Common vent

B. Relief vent

C. Island vent

D. Branch vent

B

what device is present in a water heater that allows the emptying or discharge of excessive pressure

A. Thermostat

B. Relief valve

C. Aquastat

D. Boiler blowoff

B

Valve up to and including 51 mm in size should be made of what materials?

A. Galvanized iron

B. Cast iron

C. Brass

D. Copper

C

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

A

Grease interceptors must be equipped with devices to control the rate of which of the following?

A. Heat Transference

B. Air flow

C. Waste flow

D. Water flow

D

What is the ideal inside diameter of cesspools?

A. 10 ft

B. 3 meters

C. Not more than 5 meters

D. Not more than 6 ft

D

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

D

What type of valve that will be used for all the outlets in a stand pipe

A. Ball

B. Check

C. Gate

D. Globe

C

The trap of a kitchen sink may NOT accept the waste of which of the following?

A. Clothes washer

B. Garbage disposer

C. Dishwasher

D. Continuous waste

A

what sewage includes the wastes from metal and chemical plants, oil refineries, laundries. diary plants and breweries?

A. Residential

B. Commercial

C. Industrial

D. Institutional

C

What part of the trap of trapped fixture being served, must individual vents be

connected?

A. Fixture drain

B. Top

C. Bottom

D. Fixture branch

A

From where can liquid waste be disposed off directly into the ground?

A. chemical laboratory

B. church sacrum

C. toilet

D. restaurant sink

B

How many equivalent water supply fixture unit has the flush tank type of water

closet that is for private use?

A. 4

B. 2

C. 3

D. 5

C

What feature in water supply is NOT advisable to plumbing fixtures, devices

and opportunities?

A. Bacterial quality

B. Adequate pressure

C. Sufficient volume

D. Without undue noise

A

What is the least diameter (in mm) of building water service pipe that is allowed by the plumbing Code?

A. 19

B. 12.5

C. 10

D. 25

A

What type of surface must plumbing fixtures should NOT have?

A. Concealed fouling surface

B. Smooth, impervious purposes

C. China surfaces

D. Stainless steel surfaces

A

What do you call the vertical vent pipe installed primarily to provide circulation of air to and from any part of the drainage system?

A. Common vent

B. Relief vent

C. Vent Stack

D. Stack vent

C

What pipe carries potable water from the water meter or other source of water supply to a building or other point of use or distribution on the lot

A. Building supply

B. Liquifier

C. Water distributor

D. Water regular

A

What pressure exist without any flow motion?

A. Static

B. Stagnate

C. Adiabatic

D. Pore Water

A

What is the term used which implies siphonage in piping system?

A. Deoxygenation

B. Carbonation

C. Vacuum

D. Flushing

C

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

C

What type of sewage has not received any treatment?

A. Crude

B. Oxidized

C. Clarified

D. Carbonized

A

A room equipped with a shower or bathtub is a ___.

A. toilet room

B. bathroom

C.shower room

D. washroom

B

What is the process whereby steel and iron pipes rust?

A. Decay

B. Deoxidation

C. Ferrule

D. Tuberculation

D

If the potable water supply is being connected to a non-potable water source, with what reduced pressure device should connections be made?

A. Back flow preventer

B. Air gap

C. Vacuum breaker

D. Double check valves

A

Which of the following vents does NOT carry liquid or water-borne wastes?

A. Dual

B. Dry

C. Unit

D. Wet

B

What do you call an approved tank or pit which receives sewage or wastewater below the normal grade and is emptied by mechanical means?

A. Lateral

B. Sump

C. Damp

D. Dumping

B

Which of the following is a common form of protection from corrosion for pipes passing through concrete?

A. Protective concreting

B. Protective coating

C. Protective handling

D. Protective wrapping

D

what do you call the main water pipe which delivers potable water to a building.

A. Water connector

B. Water service

C. Water supply

D. Water distributor

B

Which of the follwing is NOT allowed in the construction of a storm water

drainage system?

A. Schedule-40 plastic fittings

B. Cast-iron fittings

C. Drainage fittings that are commonly used for sanitary drainage

D. Fittings that retard the flow of storm water

D

What do you call the water that stands in or passes through the ground?

A. Artesian

B. Surface

C. Deep well

D. Ground

D

Which of the following does NOT constitute a clean out?

A. Removable fixture trap

B. Removable plug or cap

C. Water faucet

D. Water closet

C

What is the combination of elbows or bends in aline of piping, which bring one section of the pipe out of line parallel with the original section?

A. Sanitary piping

B. Piping system

C. Offset

D. Circuit piping

C

What device is often used to connect an appliance to a gas source?

A. Flexible connector

B. Iron pipes

C. PVC pipe

D. Gas hose

A

What is the process by which suspended matter in sewage subsidies and is

deposited by gravity?

A. Clarification

B. Filtration

C. Dilution

D. Sedimentation

D

What valve of faucet closes automatically when released manually?

A. Timed shut-off

B. Slope valve

C. Supply valve

D. Quick closing valve

D

What do you call a waste arrangement that connects multiple compartments of a set of fixtures, such as double-bowl kitchen sink, to a single trap?

A. A series waste

B. An island waste

C. A continuous waste

D. A collecticve waste

C

What building drains conveys storm water but not sewage?

A. Combined drain

B. Storm drain

C. Sanitary drain

D. Surface drain

B

What portion of an underground drainage system CANNOT drain by gravity

into the building sewer?

A. Building subdrain

B. Building drain

C. Building supply

D. Building sewer

A

What is represented by a solid line broken with two dots or dashes in piping

diagrams?

A. Drainage pipe

B. Vent pipe

C. Cold water

D. How water

D

The length along the centerline of the pipe and fittings is the ___

A. diagonal length

B. diameter length

C. circumferential length

D. developed length

D

What do you call a pipe with a adjacent reverse bends and shaped like the letter "S"?

A. Double bend

B. Double hub

C. Increaser

D. Sanitary cross

A

What type of water closet is installed in such a way that it does not touch the

floor?

A. Hanger

B. Wall-hung

C. Carrier

D. Handy

B

If ever it is impractical to install the horizontal drainage piping following the

required minimum slope due to some reasonable constraints, what is the least

required slope that is allowed?

A. 0.5%

B. 1.5%

C. 2.0%

D. 1.0%

D

What does NAMPAP mean

A. National Master Plumbing Association of the Philippines

B. National Agency of Master Plumbing in the Philippines

C. National Master Plumbers Association of the Philippines

D. National Association of Masters Plumber of the Philippines

C

What valve is similar to a compression cock but has a screw outside for a

connection of water hose?

A. Tap

B. Key cock

C. Hose bib

D. Faucet

C

what is the minimum allowed uniform gauge pressure in the piping system if an air test shall be made?

A. 34.5 kPa

B. 20 psi

C. 17.7 psi

D. 120 psi

A

which of the following is NOT an element in the computation of the size of grease interceptors?

A. Diameter of outlet pipe

B. Diameter of inlet pipe

C. Waste flow rate

D. Storage factor

B

Which of the following is required in the installation of a storm drainage

system?

A. 90 degrees bends

B. 45 degrees bends

C. Blind plugs

D. Cleanouts

d

Which of the following commonly carries both storm water or sewage?

A. Mixed drain

B. Subsoil drain

C. Combined sewer

D. Sanitary sewer

C

Which of the following is an impairment of the quality of potable water which

creates a hazard to public health through poisoning or the spread of disease?

A. Imbalance

B. Risk danger

C. Backflow

D. Contamination r

D

What do you call a receptacle installed to collect and drain store water from an open area?

A. Combination Sewer

B. Split drain

C. Area drain

D. Floor drain

C

What do you call the vertical distance between the crown weir and the top of the dip of a trap?

A. Airbreak

B. Airgap

C. Trap seal

D. Critical level

C

A device integrated within an air accumulator vessel that is desgned 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

C