IDENTIFY TYPES OF PIPING MATERIALS
1.0 Use --------------- above and below ground. This pipe comes in different lengths,
and cutting may be necessary to allow threading.
A. Flexible Copper Tubing
B. Rigid Copper Tubing
C. Galvanized Steel Pipe
D. Rigid Plastic Pipe
2.0 ----------------- comes in 10- and 20-foot lengths and is used only above ground. Types K,
L, and M have the same outside diameter to accept fittings. The inside diameters for K, L, and
M are different.
A. Galvanized Steel Pipe
B. Rigid Copper Tubing
C. Flexible Copper Tubing
D. Rigid Plastic Pipe
3.0 ---------------- comes in coils of 60 or 100 feet. Types of K and L can be used above
and below ground. Both types have the advantage of bending with the use of a bending
tool for installation.
A. Rigid Copper Tubing
B. Flexible Copper Tubing
C. Galvanized Steel Pipe
D. Rigid Plastic Pipe
4.0 ---------------- in 10- and 20-foot lengths and is used above and below ground. Type PVC
is used for cold water supply lines. Type CPVC is used for cold and hot water lines and is
temperature-rated up to 180 degrees.
A. Rigid Plastic Pipe
B. Rigid Copper Tubing
C. Flexible Copper Tubing
D. Galvanized Steel Pipe
5.0 -----------------. This comes in coils of 100 feet and is used above ground only. Type PB is
used for cold and hot water lines and is temperature-rated from 180 to 200 degrees. Type PE
is used only for cold water lines.
A. Rigid Plastic Pipe
B. Rigid Copper Tubing
C. Flexible Copper Tubing
D. Flexible Plastic Pipe
6.0
What is the pipe engagement for a 1 1/2-inch threaded steel pipe?
A. 5/8
B. ½
C. 9/16
D. 3/8
7.0 How many turns does it take to operate a 3” double-disk valve?
A. 9
B. 8
C. 7.5
D. 10
8.0 How many turns does it take to operate a 4” double-disk valve?
A. 16.5
B. 15.5
C. 16.0
D. 14.5
9.0A galvanized steel pipe can be cut with a __________ and a __________.
A. Reamer and a pipe cutter
B. Pipe cutter and a knife
C. Pipe cutter and a hacksaw
D. Reamer and a knife
10.0 Remove burrs from the inside ends of a galvanized pipe with a __________.
A. knife
B. Reamer
C. hacksaw
D. pipe cutter
11.0 When threading a galvanized pipe, back off the stock handle __________turn after each complete
turn around the pipe.
A. One-quarter turn
B. 1 turn
C. 1 ½ turns
D. 2 turns
12.
A copper tubing can be cut with a __________ and a __________.
A. Pipe cutter and a hacksaw
B. Tube cutter and a pipe cutter
C. Tube cutter and a hacksaw
D. Reamer and tube cutter
13.0 The ends of a copper tubing are cleaned to a bright shine with __________.
A. an emery cloth
B. a sand paper
C. a steel brush
D. water
14.0
Thin-walled copper tubing ends can be prepared for three kinds of joint connections.
A. Swaging, Heating, Brazing
B. Soldering, Swaging, Flaring
C. Flaring, Heating, Brazing
D. Soldering, Heating, Cutting
15.0
A plastic pipe is cut with a __________.
A. tube cutter
B. Hacksaw
C. knife
D. pipe cutter
16.0 The burrs on the cut ends of a plastic pipe are removed with a __________.
A. hacksaw
B. reamer
C. bolo
D. knife
17.0 The ends of a rigid plastic pipe are cleaned with sandpaper to remove the pipe's __________.
A. burrs
B. gloss
C. smell
D. color
18.0 List the three types of pipes used in a water system.
A. Galvanized steel, Copper Tubing and Plastic
B. Copper tubing, Cast Iron and Wrought Iron Pipe
C. Plastic, concrete and Galvanized steel pipes
D. All of the above
19.0 What is the threaded engagement for a 1-inch galvanized steel pipe?
A. 1/2 inch
B. 9/16 inch
C. 5/8 inch
D. 11/16 inch
20.
Which letter shows a correct fitting dimension?
A. D.
B. A.
C. B.
D. C.
21. In figure below, To cut a galvanized steel pipe, you should turn the cutter handle clockwise
one quarter turn after how many revolution(s)?
A.
B.
C.
D.
22.
2
1 1/2
1
1/2
Refer to the illustration below. How much thread must you extend beyond the die stock to
completely thread the pipe's end?
A.
B.
C.
D.
1/4 inch
1/8 inch
1/2 inch
5/8 inch
23.
What should you use to clean a rigid copper pipe’s ends to a bright shine?
A.
Blitz cloth
B.
Emery cloth
C.
Wire brush
D.
Waste cloth
24.
What two tools should you use to flare the ends of a flexible copper tubing?
A.
Flaring and swatting
B.
Flaring and swaging
C.
Swaging and flanging
D.
Flanging and flaring
25.
What type of saw should you use to cut a rigid plastic pipe?
A.
Coping saw
B.
Rip saw
C.
Crosscut saw
D.
Hacksaw
26.
What should you use to remove the gloss on the ends of a rigid plastic pipe?
A.
Steel wool
B.
Sandpaper
C.
Emery cloth
D.
Knife
27.
Types of stops that are installed between the water main and the building.
A.
B.
C.
D.
28.
The __________ stop shuts off or controls the amount of water flow into a building.
A.
B.
C.
D.
29.
Curb
Corporation, Curb and Meter
Meter
Corporation
Corporation
Curb
Meter
Gate Valve
The __________ stop shuts off the water supply outside of the building.
A.
B.
C.
D.
Meter
Corporation
Curb
Globe Valve
30. How many turns does it take to operate a 6” double-disk valve?
A. 16.5
B. 20.5
C. 17.5
D. 18.5
31. How many turns does it take to operate a 8” double-disk valve?
A. 28
B. 27
C. 30
D. 29
32. Approximate capacity of 1” pipe in US gallons per foot is _____.
A. 0.0416
B. 0.0415
C. 0.0408
D. 0.0420
33. Approximate capacity of 10” pipe in US gallons per foot is _____.
A. 4.020
B. 4.015
C. 4.016
D. 4.018
34.
A galvanized pipe threaded joint connection with a fitting requires that __________ be applied
only to the __________.
A. Pipe joint compound, pipe threads
B. Pipe joint compound, pipe
C. Pipe joint compound, fittings
D. Pipe joint compound, valves
35.
Screw the fitting on the pipe until it is __________.
A. Well tight
B. hard tight
C. Screw tight
D. Hand tight
36.
Tighten the fitting by using two __________.
A. Pipe wrenches
B. valves
C. Fittings
D. hands
Refer to the illustration. Identify and list the roughing-in water pipelines.
41.
Letter “A” indicates ________________________________________.
A. Re-use water distribution pipeline
B. Hot water distribution pipeline
C. Cold water distribution pipeline
D. Cold water branch pipeline
42.
Letter “B” indicates ________________________________________.
A. Hot water distribution pipeline
B. Cold water branch pipeline
C. Re-use water distribution pipeline
D. Cold water distribution pipeline
43.
Letter “C” indicates ________________________________________.
A. Cold water distribution pipeline
B. Hot water distribution pipeline
C. Re-use water distribution pipeline
D. Hot water line for fixture
44.
Letter “D” indicates ________________________________________.
A. Cold water distribution pipeline
B. Cold water line for fixture
C. Hot water distribution pipeline
D. Re-use water distribution pipeline
45.
Letter “E” indicates ________________________________________.
A. Air chamber for pipe noise control
B. Air gap
C. Crown
D. Cold water distribution pipeline
46.
Letter “F” indicates ________________________________________.
A. Hot water distribution pipeline
B. Re-use water distribution pipeline
C. Return pipe
D. Mineralized pipe
47.
Where should you place the pipe joint compound to form a threaded galvanized
steel pipe joint?
A. Pipe and fitting threads
B. Cut threads
C. Fitting threads
D. Pipe threads
48. Where should you apply the soldering flux to form a soldered joint for a rigid copper tubing?
A. Outside of pipe end and inside of fitting
B. Outside of pipe end only
C. Outside of pipe and fitting end
D. Inside of fitting only
49. Where does the soldering of a rigid copper tubing joint require the torch heat to be placed?
A. Flux
B. Solder
C. Fitting
D. Pipe
50. Where should you apply the solvent cement to form a solvent weld joint for a rigid plastic pipe?
A. Outside of pipe end and inside of fitting
B. Outside of fitting and pipe
C. Outside of pipe end only
D. Inside of fitting only
51. The water supply service water line to a building has three stops which are _______, _______,
___________.
A. corporation, gate valve and drain valve
B. incorporated, curb and valve
C. corporation, curb and meter
D. incorporated, check valve and drain valve
52.
Approximate capacity of 2” pipe in US gallons per foot is _____.
A. 0.1932
B. 0.1732
C. 0.1832
D. 0.1632
53.
Approximate capacity of 4” pipe in US gallons per foot is _____.
A. 0.7000
B. 0.6600
C. 0.6528
D. 0.6250
54.
Piping color codes are used when utility companies stake out piping locations. A yellow
flag generally indicates ___________.
A. Chilled Water
B. Gas
C. Storm
D. Hot water
55. When you encounter a blue flag that indicates the location of piping below ground, the type
of piping that you are probably dealing with is one of the following:
A. Storm
B. Gas
C. Water
D. Chilled water
56. Brass pipe is one of the approved materials for water distribution. On what standard it is based?
A. ASTM B 302
B. ASTM B 43
C. ASTM D 2846
D. ASTM A 53
57. ASTM D 2846, ASTM F 441, ASTM F 442, CSA B137.6 are standards for what type of materials?
A. Chlorinated Polyvinyl Chloride (CPVC) plastic pipe and tubing
B. Copper or copper alloy pipe
C. Galvanized Steel Pipe
D. Brass pipe
58. Galvanized Steel Pipe is one of the approved materials for water distribution. On what
standard it is based?
A. ASTM B 302
B. ASTM A 53
C. ASTM D 2846
D. ASTM B 43
59. ASTM D 3309 and CSA CAN3-B137.8.6 are standards for what type of materials?
A. Galvanized Steel Pipe
B. Copper or copper alloy pipe
C. Polybutylene (PB) plastic pipe and tubing
D. Chlorinated Polyvinyl Chloride (CPVC) plastic pipe and tubing
60. Brass pipe is one of the approved materials for water service piping. On what standard it is based?
A. ASTM A 53
B. ASTM B 302
C. ASTM D 2846
D. ASTM B 43
60. Cast Iron pipe is based on what standard?
A. ASTM A 74, ASTM A 888 and CISPI 301
B. ASTM F 1488
C. ASTM B 88
D. ASTM C 428
61. ASTM D 266, ASTM D 2949 and ASTM F 891 are some of the standards for what type of
materials?
A. Galvanized Steel Pipe
B. Copper or copper alloy pipe
C. Polyvinyl Chloride (PVC) plastic pipe (Type DWV)
D. Chlorinated Polyvinyl Chloride (CPVC) plastic pipe and tubing
62. Minimum plumbing facilities for night club; water closet 1: 40 male, 1:40 female, how about for
lavatory?
A. 1:45 persons
B. 1:50 persons
C. 1:40 persons
D. 1:75 persons
63. In Revised National Plumbing Code of the Philippines the minimum plumbing facilities for
secondary school; water closet 1: 30 male, 1:25 female, how about for lavatory?
A. 1:50 male, 1:50 female
B. 1:35 male, 1:35 female
C. 1:40 male, 1:40 female
D. 1:25 male, 1:25 female
64. Minimum water supply fixture unit for bar sink for private use is ____.
A. 1.5
B. 2
C. 3
D. 1
65. Minimum water supply fixture unit for lavatory for public use is ____.
A. 1
B. 2
C. 1.5
D. 3
66. What would be the minimum pipe size for lavatory?
A. 2ӯ
B. 1-1/4ӯ
C. 1-1/2ӯ
D. 3ӯ
67. Minimum pipe size for lavatory available in the market is ____.
A. 2ӯ
B. 1-1/4ӯ
C. 1-1/2ӯ
D. 3ӯ
68. What is the maximum length of pipe for size 150 mmØ PVC that could freely drain.
Assume flow is equals to 15.9 liters per second, 0.9 m/sec velocity and chezy constant
at 55. Consider full bore for hydraulic mean.
A. 135 meters
B. 140 meters
C. 160 meters
D. 150 meters
69. Calculate the gradient required for a 100 mm diameter drain to run half-full at an
average velocity flow of 1.2 m/sec. (Take C=55).
A. 1 in 50m would be required
B. 1 in 62m would be required
C. 1 in 52.5m would be required
D. 1 in 65m would be required
70. A rectangular channel with depth of 300mm and width of 450mm the hydraulic mean
is ______. Assume chezy constant at 55.
A. 0.1345
B. 0.1560
C. 0.1286
D. 0.1600
71. A rectangular channel with depth of 300mm and width of 450mm the average flow
velocity is 0.8 m/sec and C = 55. Calculate the gradient.
A. 1 : 750 m is required
B. 1 : 700 m is required
C. 1 : 608 m is required
D. 1 : 650 m is required
72. A rectangular channel with depth of 300mm and width of 450mm the average flow
velocity is 0.8 m/sec and C = 55. Calculate the flow in liters per second.
A. 14.5 liters/sec
B. 15.9 liters/sec
C. 17 liters/sec
D. 18 liters/sec
73. By logarithm method, calculate the length of digestive chamber of septic tank if water
depth is 1.5 meter and the drainage fixture units (DFU) is 85.
A. 2.8 meters
B. 2.5 meters
C. 3.5 meters
D. 3.0 meters
74. In Code of Practice CP 302, Small Sewage Treatment Work 1972, gives the
following formula for total capacity of septic tank where desludging is carried out at
not more than 12 months interval, V = 180N + 2000. If a building has 100 persons,
calculate the volume of the septic tank. Note: V stands for the volume of the tank in
liters and N is for the number of persons.
A. 25 m³
B. 22 m³
C. 24 m³
D. 20 m³
75. In problem 73, V = 180N + 2000. If a building has 100 persons, calculate the length
of digestive chamber of the septic tank if water depth is 1.5 meters.
A. 4.20 m
B. 2.1 m
C. 2.4 m
D. 2.5 m
76. What is minimum size of pipe connected to a water closet?
A. 2 inches
B. 4 inches
C. 3 inches
D. 2-1/2 inches
77. The average velocity of the following: 1.2 m/sec and 0.8 m/sec is _____.
A. 1 m
B. 1.1 m/sec
C. 1.2 m/sec
D. 1 m/sec
78. When the body is at rest the average velocity is _____.
A. 0 m/sec
B. 9.8 m/sec
C. 3.2 m/sec
D. 1 N/m²
79. A pressure gauge on a boiler fed from a cistern shows a reading of 350kPa. Calculate
the head of water above the gauge.
A. 32 m
B. 40 m
C. 35.68 m
D. 17.89 m
80. Calculate the pressure on the base of a tank measuring 4 m x 2 m x 2 m deep when
the head of water is 1.5 m.
A. 17.0 kPa
B. 16.0 kPa
C. 14.715 kPa
D. 15.0 kPa
81. Calculate the force acting on the base of a tank measuring 4 m x 2 m x 2 m deep
when the head of water is 1.5 m.
A. 22 kN
B. 21.0 kN
C. 20.0 kN
D. 19.0 kN
82. A pressure gauge on a boiler fed from a cistern shows a reading of 48 psi. Calculate
the head of water above the gauge if the specific gravity of liquid is 1.
A. 110.88 ft
B. 114.0 ft
C. 113.2 ft
D. 116.0 ft
83. The specific gravity of water is _______.
A. 1.03
B. 0.7
C. 0.8
D. 1
84. The specific gravity of oil is _______.
A. 0.8
B. 1.0
C. 0.7
D. 1.03
85. A pump capable of generating 125 feet of head of water would provide a pressure of ____.
A. 50.0 psig
B. 54.1 psig
C. 60.0 psig
D. 55.0 psig
86. A pump capable of generating 125 feet of head of gasoline would provide a pressure of ____.
A. 40.0 psig
B. 37.8 psig
C. 50.0 psig
D. 45.0 psig
87. A pump capable of generating 125 feet of head of sea water would provide a pressure of ____.
A. 40.0 psig
B. 45.0 psig
C. 50.0 psig
D. 55.3 psig
88. The available head at the suction nozzle of the pump.
A. Suction head
B. Discharge head
C. Suction lift
D. Pressure head
89. The vertical distance from the centerline of the pump (this would be the shaft on a horizontal
pump) to the level in the discharge vessel.
A. Suction lift
B. Suction head
C. Discharge head
D. Pressure head
90. Is the negative suction head. It exists when the liquid level in the suction vessel is below the
center line of the pump.
A. Pressure head
B. Velocity head
C. Discharge head
D. Suction lift
91. NPSH means ______________________________________________.
A. Nitrogen Product Suction Head
B. Network Positive Suction Head
C. Net Positive Suction Head
D. Net Positive System Head
92. ATM in plumbing term means ______________________________________________.
A. Automatic Teller Machine
B. Atmospheric Pressure
C. Augmented Total Membrane
D. Allied Total Mesh
93. Plans and Specifications - All plumbing plans, drawings. diagrams, design analyses/
computations as required, technical specifications, bills of materials and other required documents
for all types of occupancy shall be prepared, signed and sealed by a Registered and License
Master Plumber without limitations pursuant to Republic Act 1378, as amended and shall be
submitted in six (6) sets of the aforementioned requirements with each application for a permit.
A. Chapter 4 Section 102.2 of RNPCP
B. Chapter 2 Section 102.2 of RNPCP
C. Chapter 3 Section 102.2 of RNPCP
D. Chapter 1 Section 102.2 of RNPCP
94. Underbid another Registered Master Plumber by reducing his/her professional fees
after being informed of the fees charged by the other Registered Master Plumber;
A. Code of Ethics Number 3
B. Code of Ethics Number 1
C. Code of Ethics Number 2
D. Code of Ethics Number 7
95. Advertise in self-laudatory language, act in any manner and engage in any practices
which tend to bring dishonor to the dignity of the Registered Master Plumber, the
National Master Plumbers Association of the Philippines (NAMPAP) and the
plumbing profession.
A. Code of Ethics Number 1
B. Code of Ethics Number 7
C. Code of Ethics Number 2
D. Code of Ethics Number 3
96. In soil stack the maximum fixture unit loading for 4 inches diameter pipe is _____.
A. 256 DFU
B. 246 DFU
C. 346 DFU
D. 265 DFU
97. In vent piping the maximum fixture unit loading for 4 inches diameter pipe is _____.
A. 265 DFU
B. 246 DFU
C. 346 DFU
D. 256 DFU
98. Pipes carrying wastewater from swimming or wading pools, including pool drainage and
backwash from filters and water from promenade drains which serve walks shall be installed
as an ________________. Where a pump is used to discharge waste pool water to the
drainage system, the pump discharge shall be installed as an indirect waste.
A. wastewater
B. direct waste
C. indirect waste
D. recyclable water
99. Air-conditioning units and refrigerators are connected to___________________.
A. direct waste
B. indirect waste
C. wastewater
D. recyclable water
100. Refrigeration Wastes
A. SECTION 819
B. SECTION 817
C. SECTION 818
D. SECTION 819.1