practical plumbing questions

7/25/2019 Practical Plumbing Questions

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Figure 1-A: Isometric Drawing of two toilets for public use.

1. What material is applied under the flange for installation onto a lavatory and/or sink?A. Plumber's putty

B. Rubber washerC. Rubber gasket

D. Pipe joint compound

2. How many lavatory sinks in figure 1-A?A. 2B. 1

C. 3D. 4


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3. What is the total WSFU for two lavatories for public use?A. 4WSFUB. 2 WSFUC. 3 WSFUD. 8 WSFU

4. What is meant by AC?A. Air ChamberB. Alternating CurrentC. Acquired ChamberD. Air Cap

5. In Figure 1-A calculate the total WSFU, if WC = 5 and LAV = 2.A. 14 WSFUB. 7 WSFUC. 12 WSFUD. 10 WSFU

6. Calculate the total DFU as shown in Figure 1-A, WC = 6, LAV = 3 and FD = 2?

A. 20 DFUB. 11 DFUC. 18 DFUD. 20 WSFU

7. For 30 DFU connected in the plumbing system, what would be the minimum soil pipecould be used as per the Revised National Plumbing Code of the Philippines?

A. 100mm

B. 90 mm

C. 75 mm

D. 63 mm

8. In Figure 1-A, 40 mm GIP cold water line is called.

A. distribution lineB. supply line

C. water main lineD. branch line

9. What is the use of air chamber?A. water hammer arrestor

B. water choke point

C. pressure break pointD. part of the design

10. One gallon per minute is equals to ________ liters per second.

A. 0.063B. 0.630

C. 0.306D. 0.036

11. Minimum supply pipe for lavatory using Galvanized Iron is ___________.

A. 12 mm

B. 19 mm

C. 25 mmD. 15 mm


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12. Minimum supply pipe for lavatory using PPR PN 20 is ___________.

A. 20 mm

B. 25 mm

C. 32 mm

D. 15 mm

13. In DWV system, what is the minimum size of vent pipe for 30 DFU using commerciallyavailable materials?

A. 63 mm

B. 51 mm

C. 76 mm

D. 110 mm

14. Minimum trap and trap arm size for lavatory as per Plumbing Code of the Philippines.

A. 38 mm

B. 32 mm

C. 51 mm

D. 63 mm

15. Minimum trap and trap arm size for floor drain as per Plumbing Code of the Philippines.

A. 51 mm

B. 38 mm

C. 76 mm

D. 32 mm

16. Each horizontal drainagepipe shall be provided with a clean out at its upper

terminal and each run of piping which is more than 15 meters in total

developed length shall be provided with a cleanout and at every ___________

length or a fraction thereof.A. 15 meterB. 25 meterC. 12 meterD. 20 meter

17. Cleanouts may be omitted on a horizontal drain line Jess than_________ in

length unless such line is serving sinks or urinals.A. 1.5 meterB. 2.5 meter

C. 1.2 meterD. 2.0 meter

18. Cleanouts may be omitted on short horizontal drainage pipe installed at a slope

of seventy two (72) degrees or less from the vertical line (or an angle__bend).A. 1/5 bendB. 2/5 bendC. 1/2 bendD. bend


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19. In Section 1401 for Minimum Standards of Materials, Quality: All materials

used in anyplumbing or drainage system, orpart thereof shall he free from

defects. Allpipes,pipe fittings, traps, fixtures, materials and devices used in a

plumbing system shallbe as listed or labeled in accordance with Table 14A of

this Code. What specific section does the above referring to?

A. Section 1401.1B. Section 1402C. Section 1401.2D. Section 1402.1

20. What is meant by I.P.S.?A. Iron Pipe SizeB. Internal Pipe SizeC. Integral Pipe SizeD. Invert Pipe Side

21. Copper tube shall not be used for piping carrying chemical or industrial wastes

as defined in __________ of the Revised National Plumbing Code.A. Section 811B. Section 812C. Section 813D. Section 712

22. What is meant by Type DWV?A. Drainage, Waste and VentB. Drain, Water and ValveC. Drop Water and ValveD. Drip Water with Vent

23. Such valve shall remain sufficiently open during periods of low flows to avoidscreening of and fibrous materials and shall not restrict capacities or cause

excessive turbulence duringpeak loads.A. Backwater ValveB. Gate ValveC. Angle ValveD. Blow Off Valve

24. What is meant by ANSI?A. American National Standard InstituteB. Armenian National Standard Institute

C. Afghanistan National Standard InstituteD. Association of National Standard Institute

25. What is meant by ASTM?A. American Society of Testing MaterialsB. American Society of Tested MaterialsC. Afghanistan Society of Testing MaterialsD. Association of Severe Testing Materials

26. IAPMO means?A. International Association of Plumbing and Mechanical OfficialsB. International Association of Plumbing and Master Plumber OfficialsC. International Association of Plumbing and Master Electrician OfficialsD. International Association of Plumbing and Mechanic Officials


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27. What UL stands for?A. Underwriters Laboratories, IncorporatedB. United LaboratoriesC. UnilabD. Ultra Laboratory

28. ISO refers to?A. International Standard OrganizationB. International Specification OrganizationC. International Synchronization OrganizationD. International System Organization

29. PNS means?A. Philippine National StandardB. Philippine Network SystemC. Philippine National SystemD. Philippine National Specification

30. FS means?

A. Federal SpecificationsB. Filipino StandardC. Federal SystemD. Federal Standard

31. Commonly used materials for water supply system available in the market.A. Plastic and Galvanized Iron Pipes

B. Asbestos Cement Pressure PipeC. Black Iron PipeD. Vitrified Clay Pipe

32. In plumbing bench marking I.E. means.

A. Invert ElevationB. Industrial EngineeringC. Internal ElevationD. Inner Elevation

33. A device installed in a drainage system toprevent reverse flow.A. Backwater ValveB. Stop gateC. Blow off ValveD. Gate Valve

34. One (1) water meter, one (1) water closet, one (1) lavatory, one ( l) shower head and

drain tor a bathtub or shower stall, one ( 1) kitchen sink, one ( 1) Laundry tray andthree ( 3) floor drains (4) faucets/hose Bibb.

A. Plumbing UnitB. Set of fixtures

C. Appliance for connectionD. Group of fixtures


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35. A water seal in form of U-shape pipe that will allow water and waste to pass thru butprevent gases and vermin inside the DWV system from slipping backwards into thehouse.A. trapB. filterC. baffleD. backflow preventer

36. _________________ is backflow caused by a negative pressure (i.e., a vacuum orpartial vacuum) in a public water system or consumers potable water system. Theeffect is similar to drinking water through a straw.A. BacksiphonageB. SuctionC. Free flowD. backflow

37. _____________ is the art and science of creating and maintaining sanitary conditions in

buildings used by humans. It is also the art and science of installing, repairing, andservicing in these same buildings a plumbing system that includes the pipes, fixtures,and appurtenances necessary for bringing in the water supply and removing liquid andwater-carried waste.A. PlumbingB. SanitaryC. MechanicalD. Chemical

39. In safety tips, electric power tools with abrasive cutting wheels should be properly_____________. User shall wear eye protection and gloves.A. grounded

B. reamedC. oiledD. sealed

40. The maximum spacing for rainwater leaders (downspouts) is ___ feet.A. 75B. 80C. 65D. 70

41. The recommended standard is 150 square feet of roof area to __ square inch of leader

area.

A. 1 inB. 2 in

C. 1.5 in

D. 2.5 in

42. The instrument for measuring relative humidity is called a ___________.A. hygrometerB. manometer

C. ohmmeterD. ammeter


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43. The plumbers toolbox contains several different types of tools; in figure below can youname the type of tool?

A. ballpeen hammerB. hammerC. pipe reamerD. tube


A. pipe wrenchB. hammerC. pipe cutterD. tube holder

45. The plumbers toolbox contains several different types of tools; in figure below can youname the type of tool is it?

A. straight pipe wrenchB. pipe wrenchC. adjustable wrenchD. vise grip

46. The plumbers toolbox contains several differenttypes of tools; in figure below can youname the type of tool?

A. heavy-duty pipe cutter

B. vise gripC. adjustable wrenchD. wrench


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A. channel-lock pliersB. pliersC. long nose plierD. wrench

48. The plumbers toolbox contains several different types of tools; in figure below can you

name the type of tool?

A. swaging toolsB. hand tapsC. allen wrenchD. punchers


A. pipe and bolt threading machineB. welding machineC. lathe machineD. glider


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A. adjustable wrenchB. internal wrenchC. channel-lock pliersD. basin wrench


A. spud wrenchB. internal wrenchC. adjustable wrenchD. basin wrench



A. strap wrench

B. internal wrenchC. adjustable wrenchD. spud wrench


A. quick acting tube cutterB. vise gripC. adjustable vise gripD. spud wrench54. The plumbers toolbox contains several different types of tools; in figure below can youname the type of tool?

A. closet augerB. sewer rod

C. flat sewer rodD. fishing rod


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A. spiral ratchet pipe reamer

B. chiselC. plumbD. lever rod



A. heavy duty chain wrenchB. adjustable wrenchC. chain blockD. closet auger


A. torque wrenchB. Philip Screw driverC. Flat screw driver

D. closet auger



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A. flaring toolB. vise gripC. plungerD. lever type tube bender


A. lever type tube benderB. vise gripC. pliersD. flaring tool60. A _______________ for use with brass pipe in a regular pipe vise is made by cutting a

pipe coupling in half lengthwise and then lining it with sheet metal.A. friction clampB. vise gripC. pliersD. flaring tool

61. In Figure 1-A, how many p-traps are needed for the system?A. 4B. 2C. 6D. 3

62. Length measured along the center line of the pipe and fittings.A. Developed LengthB. Length

C. Horizontal DistanceD. Straight line

63. A straight line that passes through the center of a circle and divides it in half.A. DiameterB. Diagonal lineC. Horizontal lineD. Broken line

64. Any physical connection between a city water supply and any waste pipe, soilpipe, sewer, drain, or any private or uncertified water supply. Any potable water

supply outlet which is submerged or can be submerged in waste water and/or

any other source of contamination.A. Cross connectionB. Linear Connection

C. Permanent ConnectionD. Center tap


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65. A device which discharges a predetermined quantity of water to a fixture for

flushing purposes; powered by direct water pressure.A. Flushometer valveB. Foot valveC. Float valve

D. Gate valve

66. A device located at the bottom of the tank for flushing water closets and similar

fixtures.A. Flush valveB. Gate valve

C. Float valveD. Check valve

67. A plumber licensed to install and to assume responsibility for contractual

agreements pertaining to plumbing and to secure any required permits.A. Master Plumber

B. Journeyman plumberC. Sanitary EngineerD. Mechanical Engineer

68. The piping from the roof which carries rainwater.A. DownspoutB. GutterC. Roof DrainD. Storm drainage

69. Any pipe which conveys to the building drain or building sewer the discharge

of one or more water closets and/or the discharge of any other fixture receivingfecal matter, with or without the discharge from other fixtures.A. Soil pipeB. Waste pipeC. Indirect waste pipeD. Storm drainage pipe

70. Drain pipe which receives one or more wastes which require treatment before

entry into the normal plumbing system; the special waste pipe terminates at the

treatment device on the premises.A. Special waste pipeB. Soil pipeC. Indirect waste pipe

D. Combine drainage pipe

71. Any pipe installed in a vertical position or which makes an angle of not more

than 45 from the vertical.A. Vertical pipeB. Slant pipeC. Horizontal pipeD. Leader


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72. Biological decomposition of organic matter with the production of ill smelling

products. It usually takes place where there is a deficiency of oxygen.A. PutrefactionB. AerationC. Digestion

D. Liquifaction

73. A receptacle which receives the discharge of a drainage system or part thereof,

and is designed and so constructed to separate solids from liquids to discharge

into the soil through a system of open-joint or perforated piping, or into a

disposal pit.A. Septic TankB. Sewage Pit

C. Holding TankD. Lagoon

74. Also called house sewer. That part of the horizontal piping of a drainage

system extending from the building drain, storm drain and/or sub-soil drain to

its connection into the point of disposal, and carrying the drainage of but one

building or part thereof.A. Building sewerB. Storm drainC. Waste pipe

D. Indirect waste pipe

75. The accumulated suspended solids of sewage deposited in tanks, beds or

basins, mixed with sufficient water to form a semi liquid mass.A. Sludge

B. Floating scumC. Grease and oilD. Silt

76. The vertical main of a system of soil, waste or vent piping.A. StackB. DownspoutC. LeaderD. Riser

77. Any pressure less than that exerted by the atmosphere (may be termed a

negative pressure).A. VacuumB. High pressureC. Low pressureD. Atmospheric pressure

78. A vent which is connected into the same stack into which the fixtures discharge.

Serves more than one fixture, it is one type of circuit vent.A. Loop ventB. Vent stack

C. Stack ventD. Wet vent


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79. A pipe connecting upward from a soil or waste stack to a vent stack for the

purpose of preventing pressure changes in stacks.A. Yoke ventB. Stack stackC. vent vent

D. Loop vent

80. _______is defined as the gravitational force exerted on a given mass at a particularlocation.

A. WeightB. MassC. AccelerationD. Gravity

81. _______is defined as mass per unit volume.A. Density

B. Weight

C. AccelerationD. Specific weight

82. _______referred to as weight density is defined as the weight per unit volume.

A. Specific WeightB. Mass

C. AccelerationD. Density

83. _______is defined as the force per unit area.A. Pressure

B. Weight

C. AccelerationD. Density

84. An act to regulate the trade of master plumber.A. RA 1378B. RA 7920C. PD 1096D. RA 1596

85. Persons applying for admission to the examination as herein provided, shall, prior tothe date of the examination, establish to the satisfaction of the Board of Examiners,that he:a. Is at least __________ years of age;b. Is a citizen of the Philippines;c. Is of good moral characterd. Is at least a high school graduate;e. Has at least five years of experience in actual plumbing work under the supervisionof a registered master plumber.A. twenty oneB. eighteenC. nineteenD. twenty86. RA 1378 was approved on ___________________.

A. June 18, 1955 C. June 18, 1945B. June 18, 1935 D. June 18, 1965


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practical plumbing questions

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