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MST - BU Plumbing P1

Total questions: 110

Worksheet time: 55mins

Name
Class
Date
1.

Which figure is used to start or stop fluid flow in a major water line?

a)

Figure E

b)

Figure A

c)

Figure C

d)

Figure D

2.

Which figure is also known as a sluice valve?

a)

Figure A

b)

Figure E

c)

Figure C

d)

Figure B

3.

Which figure features a spherical closure and a handle that does NOT rotate more than 90 degrees?

a)

Figure C

b)

Figure A

c)

Figure B

d)

Figure D

4.

Which figure is commonly used to connect to a water closet?

a)

Figure D

b)

Figure C

c)

Figure E

d)

Figure A

5.

Which figure represents a one-way valve?

a)

Figure B

b)

Figure D

c)

Figure E

d)

Figure C

6.

Which type of jointing method is commonly used for HDPE pipes?

a)

Rubber ring seals

b)

Solvent cement

c)

Threaded jointing

d)

Electrofusion welding

7.

What does HDPE stand for?

a)

High density polyethylene

b)

High density polyvinyl chloride

c)

High density polypropylene

d)

High density polyurethane

8.

What is the typical life expectancy of HDPE pipes?

a)

40 to 50 years

b)

30 to 40 years

c)

10 to 30 years

d)

50 to 100 years

9.

Which of the following is NOT true about HDPE pipes?

a)

Resistant to many chemicals

b)

Suitable for dynamic soil conditions

c)

High impact resistance

d)

Low flow capacity

10.

What is the standard color of HDPE plumbing pipes?

a)

Blue

b)

White

c)

Green

d)

Black

11.

The following questions pertain to Topic 01: Water Source, Supply, and Distribution. These wells are dug using earth augers and are usually less than 30 meters deep. They are used when the soil is free of boulders and will not cave in. The diameter ranges from 2 to 30 inches. The well is lined with metal, vitrified tile, or concrete.

a)

Dug wells

b)

Bored wells

c)

Drilled wells

d)

Driven wells

12.

What is used for water treatment?

a)

Chloride

b)

Sodium chloride

c)

Cyanide

d)

Hydrogen peroxide

13.

Where is the water meter located?

a)

Right after the main distribution line connection

b)

Beside the water pump

c)

Within the RROW, right before the property line

d)

None of the above

14.

When water travels up a vertical pipe and stops, why does it stop?

a)

Gravity and friction overcome the pressure

b)

Internal pressure equals outside pressure

c)

Because of pressure

d)

None of the above

15.

What is installed in a fixture to regulate excessive water pressure?

a)

Pressure regulator

b)

Floor drain

c)

Gate valve

d)

Check valve

16.

What is the minimum supply pipe diameter for a tank-type water closet?

a)

3/8"

b)

1"

c)

3/4"

d)

1/2"

17.

What color identifies pipes containing water?

a)

Blue

b)

Gray

c)

Yellow

d)

Green

18.

Which material should NOT be used for a water main pipe?

a)

Galvanized iron

b)

Ceramic

c)

Stainless steel

d)

PVC

19.

Which type of pipe is NOT recommended for a water line?

a)

Copper

b)

Lead

c)

Galvanized iron

d)

None of the above

20.

What is the recommended size, in gallons, for a water tank that will serve a 2-story residence with 7 occupants?

a)

300

b)

500

c)

450

d)

350

21.

Copper pipes are classified as what?

a)

Rigid

b)

Flexible

c)

Rigid or soft

d)

Soft

22.

Which type of pipe is susceptible to UV rays?

a)
Cast iron
b)

GI Pipe

c)

PVC

d)

Lead

23.

What is the primary disadvantage of using galvanized iron (G.I.) pipes in plumbing?

a)

High cost

b)

Prone to corrosion

c)

Fragility

d)

Not flexible

24.

Which of the following is commonly used for underground water lines in the Philippines due to its resistance to corrosion, but is fragile, has limited PSI capacity, and its connections are weak?

a)

Copper

b)

PVC

c)

G.I.

d)

Cast iron

25.

Which of the following is a characteristic of PPRC pipes commonly used in the Philippines for water supply lines?

a)

High cost and prone to corrosion

b)

Resistant to chemicals, corrosion, and high temperatures

c)

Fragile with limited pressure capacity

d)

Cannot be used for hot water supply

26.

What do you call a control valve used to shut off the water supply to a building in emergencies, operated by a key through a curb box?

a)

Curb cock

b)

Corp cock

c)

Valve cock

d)

Stop cock

27.

Which valve is used to control or maintain the flow of water in one direction only?

a)

Gate valve

b)

Check valve

c)

Backflow arrester

d)

None of the above

28.

Which valve comes after the water meter?

a)

Gate valve

b)

Check valve

c)

Butterfly valve

d)

None of the above

29.

Which of the following valves controls both the water temperature and flow in a shower?

a)

Thermostatic valve

b)

Flushometer valve

c)

Angle valve

d)

Shower valve

30.

Which valve is commonly used to control the flow of water by opening, closing, or throttling the flow in a pipeline?

a)

Globe valve

b)

Ball valve

c)

Gate valve

d)

Butterfly valve

31.

In high-rise buildings, why is there a need to resize water supply pipes?

a)

Because different fixtures have different supply requirements

b)

To account for the difference in pressure from the service to the supply fixtures

c)

To save money

d)

So that it does not interfere with other piping

32.

What principle governs the sizing of pipes in plumbing system design?

a)

The bigger the pipe, the higher the pressure; the smaller the pipe, the lower the pressure

b)

The smaller the pipes, the higher the pressure

c)

The pressure is the same regardless of pipe size

d)

The pressure of pipes depends only on the material used

33.

In a plumbing system, where is the highest pressure?

a)

The fixtures closest to the supply riser have the highest pressure

b)

The fixture farthest from the supply riser has the highest pressure

c)

The fixture at the lowest elevation has the highest pressure

d)

Pressure is the same at all fixtures because it’s in a single line

34.

What factor primarily affects the sizing of water supply pipes in a multi-story building?

a)

The type of fixtures being used

b)

The height of the building and the pressure needed

c)

The type of pipe material

d)

The building’s location

35.

What is the main reason for increasing pipe size in a building's water supply system?

a)

To reduce water consumption

b)

To provide a larger volume of water flow

c)

To make the pipes more visually appealing

d)

To reduce the cost of installation

36.

Which part of Manila is served by Manila Water?

a)

West

b)

East

c)

North

d)

South

37.

Which part of Manila is served by Maynilad?

a)

East

b)

West

c)

South

d)

North

38.

Which of the following is NOT a recommended material for rooftop water tanks?

a)

Stainless Steel

b)

Fiberglass

c)

Plastic

d)

Galvanized Steel

39.

What is the minimum number of floors that requires an Elevated Water Tank (EWT)?

a)

5 Floors

b)

10 Floors

c)

8 Floors

d)

12 Floors

40.

What is the minimum required distance between a well and a drainage or sanitary system?

a)

0.6 m

b)

1.5 m

c)

15.2 m

d)

45.7 m

41.

Which valve is suitable for embedding in soil?

a)

Ball

b)

Globe

c)

Butterfly

d)

Check

42.

Which of the following is NOT a regulating valve?

a)

Diaphragm

b)

Gate

c)

Globe

d)

Ball

43.

Which linear valve is used for regulating water flow?

a)

Butterfly

b)

Globe

c)

Ball

d)

Check

44.

Which of the following valves is best for water containing solid waste?

a)

Gate

b)

Globe

c)

Check

d)

Butterfly

45.

What is the minimum required slope for a water pipe?

a)

1%

b)

2%

c)

3%

d)

None

46.

What is used to join HDPE pipes?

a)

Rubber gasket

b)

Electrofusion

c)

Solvent cement

d)

Mechanical clamp

47.

What is used to join PPR pipes?

a)

Threaded Adapter

b)

Electrofusion

c)

Compression Fitting

d)

Clamp

48.

What is used to join PVC pipes?

a)

Rubber ring

b)

Heat welding

c)

Solvent

d)

Flanged joint

49.

What is used to join Hubless pipes?

a)

Rubber coupling and gear clamps

b)

Solvent

c)

Teflon tape

d)

Screwed joint

50.

What is used to join Concrete pipes?

a)

Rubber gasket

b)

Mortar

c)

PVC cement

d)

Epoxy

51.

A flexible type of pipe known for being the only plastic tubing suitable for use with hot or cold-water pressure systems. It is also recognized for its excellent chemical resistance to acids and alkalis but is not suitable for fuel oil, gasoline, or kerosene distribution systems.

a)

Polybutylene

b)

PVC

c)

uPVC

d)

Polyethylene

52.

What is the minimum size of the supply pipe distributing the main line to the primary branch?

a)

75 mm

b)

50 mm

c)

100 mm

d)

150 mm

53.

Which of the following practices is considered illegal?

a)

Using a booster pump to draw water directly from the main line and distributing it to buildings

b)

Tapping directly from the water main to fixture units

c)

Providing a cistern to supply water to buildings

d)

Tapping directly from the water main to individual cistern tanks per building

54.

In a three-storey residential building, where is the water pressure the highest?

a)

Second floor

b)

Underground

c)

Ground floor

d)

At the vertical pipe

55.

What type of valve is typically installed at the entry point of a water service line to control the entire building’s supply?

a)

Gate valve

b)

Check valve

c)

Ball valve

d)

Pressure-reducing valve

56.

What is the greenish stain that forms on copper pipes or tubes over time?

a)

Patina

b)

Rust

c)

Scale

d)

Corrosion

57.

What hand tool is used to flare pipes?

a)

Hammer

b)

Flare tool

c)

Crippling tool

d)

Welding rod

58.

Which valve provides fine and precise control of flow?

a)

Angle valve

b)

Ball valve

c)

Needle valve

d)

Check valve

59.

What tool is used to remove burrs from the inside of a cut pipe?

a)

Reamer

b)

Pipe wrench

c)

Plunger

d)

Flare Tool

60.

What valve is typically installed at the base of water tanks to prevent backflow?

a)

Ball valve

b)

Foot valve

c)

Needle valve

d)

Angle valve

61.

Using Figure 02-A, identify the different types of plumbing materials used in buildings. What is Figure A called?

a)

45-degree elbow

b)

30-degree elbow

c)

90-degree elbow

d)

None of the choices

62.

Using Figure 02-A, identify the different types of plumbing materials used in buildings. What is Figure B called?

a)

Pipe clamp

b)

Coupling

c)

Connector

d)

Elbow

63.

What is Figure C called?

a)

Towel shelves

b)

Towel rack

c)

Towel hook

d)

None of the above

64.

Using Figure 02-A, identify the different types of plumbing materials used in buildings. What is Figure D called?

a)

Gate valve

b)

Shower valve

c)

Globe valve

d)

Check valve

65.

Using Figure 02-A, identify the different types of plumbing materials used in buildings. What is Figure E called?

a)

Siamese connection

b)

Fire hydrant

c)

Twin connection

d)

Dry standpipe

66.

What is the material composition of Figure A?

a)

Brass

b)

Stainless steel

c)

G.I.

d)

PVC

67.

What is the material composition of Figure B?

a)

Brass

b)

Stainless steel

c)

G.I.

d)

PVC

68.

What is the material composition of Figure C?

a)

Brass

b)

Stainless steel

c)

Copper

d)

PVC

69.

What is the material composition of Figure D?

a)

Brass

b)

Stainless steel

c)

Copper

d)

PVC

70.

What is the material composition of Figure E?

a)

Brass

b)

Stainless steel

c)

Copper

d)

PVC

71.

Which figure is used for waste disposal?

a)

Figure D

b)

Figure A

c)

Figure C

d)

Figure B

72.

Using Figure 02-C, identify the different types of fixtures used in buildings. Which figure shows a tailpiece?

a)

Figure A

b)

Figure D

c)

Figure E

d)

Figure C

73.

Which figure is used for washing dishes?

a)

Figure A

b)

Figure C

c)

Figure E

d)

Figure D

74.

Using Figure 02-C, identify the different types of fixtures used in buildings. Which figure represents a standard basin?

a)

Figure E

b)

Figure B

c)

Figure D

d)

Figure C

75.

Which figure is used for washing clothes?

a)

Figure B

b)

Figure D

c)

Figure C

d)

Figure A

76.

What device in Figure A is used to instantly heat water at the point of use, commonly in showers?

a)

Tank-type water heater

b)

Immersion heater

c)

Single point water heater

d)

Water Filter

77.

What valve in Figure B is typically installed underground to control water flow from a main line, often for maintenance shut-off?

a)

Gate valve

b)

Curb stop

c)

Ball valve

d)

Pressure regulator

78.

What equipment in Figure C uses sunlight to heat water for domestic use, often mounted on rooftops?

a)

Heat pump

b)

Electric water heater

c)

Solar water heater

d)

Boiler unit

79.

What device in Figure D prevents pipe damage and noise by absorbing sudden changes in water pressure?

a)

Foot valve

b)

Relief valve

c)

Water hammer arrestor

d)

Check valve

80.

What mechanism in Figure E automatically regulates water level in tanks by opening and closing the inlet valve?

a)

Ball valve

b)

Overflow valve

c)

Float valve

d)

Level sensor

81.

What type of pipe is best used for grease traps?

a)

Stainless steel

b)

Brass

c)

PVC

d)

G.I.

82.

Which type of pipe fitting should be used if you want to increase the water pressure?

a)

Long sweep elbow

b)

45-degree bend

c)

Reducer

d)

Coupling

83.

What is a 180-degree bend in a pipe called?

a)

Elbow

b)

Return bend

c)

Drop elbow

d)

Wye

84.

Which coupling device is used to connect two pipes that cannot be turned, consisting of two internally threaded end pieces tightened around the pipe ends and an externally threaded center piece that draws the end pieces together as it is rotated?

a)

Reducer

b)

Union

c)

Nipple

d)

Coupling

85.

Which type of fitting is used for a yoke vent?

a)

1/8 bend fitting

b)

Tee fitting

c)

Wye fitting

d)

1/4 bend fitting

86.

Why don’t water closets need a P-trap?

a)

It’s connected to the floor drain

b)

It’s impractical

c)

It is already built-in

d)

It’s more expensive

87.

What part of the P-trap should the trap seal cover?

a)

Top of dip to top of crown weir

b)

Bottom of crown weir to top of dip

c)

Bottom of dip to top of dip

d)

Top of dip to top of crown weir

88.

Which plumbing fixture does NOT have a water-saving feature?

a)

1.5-gallon flush water closet

b)

Lavatory with pop-up

c)

Flow-limiting valve

d)

Waterless urinal

89.

For a T&B on the ground floor, which should be connected directly under the floor drain?

a)

Sleeve

b)

P-trap

c)

Elbow

d)

Nipple

90.

What is the BEST fixture for a public comfort room?

a)

Gate valve

b)

Flushometer

c)

Faucet

d)

Globe valve

91.

Which pipe fitting is used to join two straight lengths of pipe?

a)

Nipple

b)

Coupling

c)

Bushing

d)

Plug

92.

What is a sanitary tee?

a)

It is used in a drainage system

b)

It has a specific flow pattern

c)

Both a and b

d)

None of the above

93.

What is the typical slope for a waste pipe?

a)

1%

b)

2%

c)

3%

d)

4%

94.

Which fitting is threaded on the outside and used to connect pipes or fittings?

a)

Coupling

b)

Nipple

c)

Tee

d)

Teflon

95.

According to the NPC, pipe supports should be placed every?

a)

3.00 m

b)

1.50 m

c)

2.00 m2.00 m

d)

4.00 m

96.

T & S is the abbreviation for_

a)

Tub and shower

b)

Toilet and shower

c)

Toilet and sink

d)

Temperature and safety

97.

WC is the abbreviation for_

a)

Toilet

b)

Waste collector

c)

Water collector

d)

Wall chase

98.

FD is commonly used as an abbreviation for?

a)

Fixture design

b)

Fixture designation

c)

Floor design

d)

Floor drain

99.

A gooseneck spout is used on?

a)

Shower faucets

b)

Sink faucets

c)

Tub faucets

d)

None of the above

100.

Which faucet is best used outside, especially in a garden?

a)

Treaded faucet

b)

Garden faucet

c)

Hose bibb

d)

External faucet

101.

There are several reasons why soil stacks are not allowed in columns. Which of the following is NOT a reason?

a)

Pipes will interfere with the reinforcing bars

b)

The size of the column will be too large

c)

Cracks and leaks cannot be detected

d)

The gas emitted will deteriorate the concrete

102.

Which type of pipe conveys the discharge from water closets or similar fixtures?

a)

Soil pipe

b)

Soil stack

c)

Vent stack

d)

Wet pipe

103.

Which of the following should NOT be placed in line with a beam?

a)

Water closet

b)

Kitchen sink

c)

Lavatory

d)

All of the above

104.

Which material should be used for sanitary pipes?

a)

PEX

b)

PP

c)

GI

d)

uPVC

105.

What is the typical size of a pipe connected to sinks for its drain and trap arm?

a)

3"

b)

2 1/2"

c)

2"

d)

3 1/2"

106.

Excavated soil should not be placed any closer than?

a)

300 mm

b)

600 mm

c)

900 mm

d)

1200 mm

107.

What is the minimum size of a floor drain cover?

a)

3" x 3"

b)

4" x 4"

c)

2" x 2"

d)

None of the above

108.

What do you call a panel placed in the wall to provide access to valves and fittings?

a)

Access panel

b)

Wall panel

c)

Utility outlet

d)

Black box

109.

What do you call the recess in walls intended for pipes?

a)

Chase

b)

Duct

c)

Sleeve consultancy

d)

Raceway

110.

In a plumbing system, if pipes are like electrical wires, what is the equivalent of switches?

a)

Tee

b)

Valves

c)

Elbows

d)

Coupling

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