1. The minimum sound pressure level of sound which stimulates the ear to the point at which discomfort gives way to definite pain.

a. Noise b. Threshold of Audibility c. Threshold of Pain d. Ultrasonic

2. Regarding number 1 question: what point of decibel is that?

a. 80db b. 130db c. 48db d. 5db

3. The rate at which acoustic energy is radiated. Usually measured in watts.

a. Phon b. Octave c. Sound Power d. Sound Pressure

4. The lowest frequency present in a complex tone.

a. Partials b. Fundamental c. Sound Absorption d. Harmonics

5. Transmission of sound along curve surface.

a. Creep b. Free Field c. Direct Sound Field d. Sound Diffraction

6. Threshold of Feeling.

a. 48db b. 72db c. 120db d. 180db

7. Speed of sound.

a. 1,130 ft/sec b. 186,000 miles/sec c. 38 m/sec d. 1,310 m/sec

8. The science of sound, including the generation, transmission, and effect of sound waves.

a. Pure Tone b. Complex Tone c. Sound d. Acoustic

9. The unit in which the level of various acoustical quantities is expressed.

a. b. c. Decibel d. Sabin

10. A rapid succession of echoes caused by reflection of sound back and forth between two parallel walls.

a. Echo b. Reverberation c. Background Sound d. Flutter Echo

11. Drowning out high frequency sounds by low frequency sounds.

a. Masking b. Sound Diffusion c. Sound Insulation d. Pure Tone

12. A unit of loudness level.

a. Phon b. Sabin c. Hertz d. Decibel

13. Attribute of an auditory sensation which enables us to order sound on a scale extending from low to high frequency.

a. Pitch b. Complex Tone c. Pure Tone d. Octave

14. Sound waves which have been reflected back to a listener with sufficient magnitude and time delay.

a. Reverberation b. Flutter Echo c. Echo d. Noise

15. The persistence of sound in an enclosed space as a result of repeated reflection or scattering of sound.

a. Flutter Echo b. Noise c. Resonance d. Reverberation

16.What kind of Sound Absorption Material are these: Wood and Hardwood Panels, Gypsum Boards, Suspended Plaster Ceilings, Furred Out

Plasters, Rigid Plastic Boards, Windows, Glazing, Wood Floors and Platforms, etc.

a. Porous Materials b. Panel / Membrane Absorbers c. Cavity / Hemholtz Resonators d. Acoustical Blanket

17. When sound travels in all directions.

a. Resonance b. Sound Diffusion c. Sound Reflection d. Sound Diffraction

18. A device used to vary the volume of air passing through an air outlet, inlet or duct.

a. Filter b. Desiccant c. Ventilation d. Damper

19. A machine for drawing refrigerant from the evaporator at a relatively low pressure, compresses it and then discharges it to the condenser.

a. Condenser b. Compressor c. Convection d. Refrigerant

20. A substance which produces refrigerating effect by absorbing heat while expanding or evaporating.

a. Condenser b. Compressor c. Convection d. Refrigerant

21. The amount of heat which is absorbed or evolved in changing the state of the substance without changing its temperature.

a. Dew Point b. Latent Heat c. Sensible Heat d. Desicant

22. A type of air conditioning system composed of two separate sections, one installed inside the room while the other is mounted outside the

building.

a. Unit AC b. Split Type AC c. Package Type AC d. Centralized Type AC

23. A type of Slit Type Air Conditioning Unit

a. Unit AC b. Split Type AC c. Package Type AC d. Centralized Type AC

24. A heat-exchange device in a refrigeration system; it consists of a vessel or arrangement of pipes or tubing in which refrigerant vapor is liquefied by the removal of heat.

a. Condenser b. Compressor c. Convection d. Refrigerant

25. That part of an airconditioning system in which refrigerant is vaporized thereby taking up heat and producing cooling.

a. Evaporator b. Condenser c. Vapor Pump d. Air Distribution

26. Any device equipped with heating element used in the refrigerating system to increase the pressure of the refrigerant.

a. Compressor b. Ventilation c. Humidistat d. Generator

27. Heat transmission, either natural or forced by currents resulting from differences in density due to temperature difference in the heated space.

a. Condenser b. Compressor c. Convection d. Refrigerant

28. The ratio of light absorbed by a material to the light falling upon it.

a. Absorption b. Room Cavity Ratio c. Sabins d. Black Colored Wall

29. A unit of illumination equal to 1 lumen/m2

a. Candela b. Lux c. Lambert d. Footcandle

30. The various process, systems, forms and/or equipment used to provide light and illumination.

a. Illumination b. Luminescence c. Intensity d. Lighting

31. A unit of Luminous Flux

a. Candela b. Lux c. Lambert d. Lumen

32. The attribute of visual perception in accordance with which a surface appears to emit more or less light.

a. Brilliance b. Brightness c. Visible Light d. Illuminance

33. The rate of flow of light through a surface.

a. Infrared Radiation b. Luminosity c. Luminous Flux d. Luminaire

34. A unit of luminous intensity; international candle

a. Candela b. Candela Power c. Footcandle Footlambert

35. The ratio of reflected light to incident light.

a. Luminous Flux b. Reflectance c. Luminosity d. Absorption

36. A waste pipe that does not connect directly with the drainage system, but that discharges into the drainage system through an air break or gap into a trap, fixture receptor or interceptor.

a. Waste Pipe b. Soil Pipe c. Indirect Waste d. Sewage

37. A pipe that conveys the discharge of water closets or similar fixtures containing fecal matter, with or without the discharge of other fixtures to the building drain or building sewer.

a. Sewer Pipe b. Storm Drainage Pipe c. Soil Pipe d. Waste Pipe

38. Any wastewater containing animal or vegetable matter in suspension or solution and may include liquids containing chemical in solutions

a. Sewage b. Sewer c. Soil Pipe d. Waste Pipe

39. A pressure within the sanitary drainage system or vent piping system that is greater thanatmospheric pressure (>14.7 psi)

a. Backflow b. Back pressure c. Back Siphonage d. Check Valve

40. The extended portion of a pipe that is closed one end to which no connections are made on the extended portion, thus permitting stagnation of wastewater or air therein.

a. Cap b. Cleanout c. Deadend d. Plug

41. A bathroom containing a water closet and a lavatory.

a. Toilet and Bath b. Powder Room c. Full Bath d. Half Bath

42. How many gallons of water for the Water Closet Flushing requirements?

a. 30 gallons b. 0.75 2 gallons c. 3 5 gallons d. 2 2.5 gallons

43. Water which undergoes treatment, either physical, biological or chemical means to improve water quality.

a. Contaminated Water b. Purified Water c. Natural Water d. Pure Water

44. The very common treatment can remove suspended particles, some bacteria and some color.

a. Sedimentation b. Coagulation c. Aeration d. Filtration

45. Unit of EMF / measure of the pressure or force which keeps electricity in motion.

a. Resistance b. Battery c. Voltage d. Amperes

46. When a circuit is divided into two or more branches, each branch transmitting part of the current. The conductor of each branch taken separately.

a. Parallel b. Shunt c. Series d. Circuit

47. A combination of two or more electric cells capable of storing and supplying direct current by electrochemical means.

a. Battery b. Generator c. Shunt d. Direct Current

48. Uses insulated cables instead of Bus Bars / rigidly mounted in an open space frame.

a. Bus Bars b. Cable Bus c. Raceway d. Cable Tray

49. An enclosed channel designed expressly for holding wires, cables or busbars with additional functions.

a. Bus Bars b. Cable Bus c. Raceway d. Cable Tray

50. A unit or assembly of units or sections and associated fittings forming a rigid structural system used to support cables.

a. Bus Bars b. Cable Bus c. Raceway d. Cable Tray

51. An approved, completely assembled metal troughing and fitting, containing bare conductors intended for use as feeders, the conductors being suitably supported on insulators.

a. Bus Bars b. Cable Bus c. Raceway d. Cable Tray

52. A simple device consisting of an alloy link wire of relatively low melting temperature which when enclosed in an insulating fiber tube or

either a porcelain cup.

a. Fluorescent Lamp b. Fuse c. Incandescent Bulb d. Circuit Breaker

53. All parts of a circuit are electrically connected end to end.

a. Parallel b. Series c. Shunt d. Short Circuit

54. When two or more electrical devices are connected so that each one offers a separate path for the flow of current between two points.

a. Parallel b. Series c. Shunt d. Short Circuit

55. Final distribution point feeding out to the branch circuits containing the electrical utilization apparatuses and devices.

a. Transformer b. Switchboards c. Panelboards d. Branch Circuit

56. The lowest portion of the inside top surface of the channel through trap.

a. Crown b. Spring Line c. Dip d. Invert

57. These are dug with earth augers, are usually less than 30 meters deep. They are used when the earth to be bored is boulder free and will

not cave in. the diameter ranges from 2 30. The well is lined with metal, vitrified tile or concrete.

a. Dug Wells b. Driven Wells c. Bored Wells d. Drilled Wells

58. How many gallons do an average daily consumption of a Bathtub?

a. 5 gallons b. 30 gallons c. 40 gallons d. 100 gallons

59. Water from laundries, wash basins, sinks, shower, and bathtub.

a. Soft Water b. Grey Water c. Black Water d. Storm Water

60. Minimum fixture drains size for Water Closets.

a. 1.5 b. 2 c. 3 d. 4

61. Minimum fixture drains size for a Bathtub

a. 1.5 b. 2 c. 3 d. 4

62. These are fixtures that are installed in janitors closets and building maintenance areas for use by the building maintenance personnel.

a. Broom Closet b. Service Sink c. Master Control Panel d. Wash Basin

63. Location of cleanouts should be place at every ________ run of horizontal soil or waste piping.

a. 25m b. 10m c. 20m d. 15m

64. A device installed in piping to prevent the reverse flow of storm or sewage into the drainage system ot their branches.

a. Check valve b. Backwater valve c. Downspout d. Catch Basin

65. A cast iron pipe in which the carbon is reformed by magnesium inoculation, resulting in a material having high strength without otherwise

changing its basic properties. Good corrosion resistance makes this type of pipe especially useful in underground installations.

a. Acid Resistance Cast Iron Pipe b. Galvanize Steel Pipes c. Galvanize Wrought Iron Pipe d. Ductile Iron Pipe

66. A rigid type of pipe known to have a good chemical resistance, excellent impact strength, especially at low temperatures and maintains rigidity at high temperatures. (black / gray pipe)

a. cPVC b. ABS c. ACETAL d. PP

67. A flexible type of pipe known to have the only flexible plastic tubing suitable for use with hot and color water pressure system. And it also known as an excellent chemical resistance to acids and alkalis but is not suited for fuel oil, gasoline or kerosene distribution system. (blue or gray pipe)

a. Polyethylene b. Polybutylene c. Polyvinyl Chloride d. uPVC

68. A type of private sewage disposal that has a vault constructed of concrete for the collection or raw sewage and a wooden shelter.

a. Cesspool b. Privy c. Latrine d. Septic Tank

69. A Piece of pipe lesser than 12 length / threaded on both ends.

a. Bushing b. Air Chamber c. Nipple d. Coupling

70. A flexible type pipe that is excellent in chemical and crush resistance has impact strength and flexibility and good low temperature performance. (black-bluish pipe)

a. uPVC b. Copper Tubing c. Polyethylene d. Polybuthylene

71. A box with blank cover which is inserted in one or more runs or raceways to facilitate the pulling of wires.

a. Receptacle outlet b. Pullbox c. Outlet Box d. Junction box

72. Electrical cable consisting of two or more insulated conductors protected by a flexible, helically wound metal wrapping. Also called BX cable.

a. Metal Clad Cable b. Armored Cable c. Mineral-insulated Cable d. Coaxial Cable

73. A cartridge fuse having a metal blade at each end for making contact with the fusible link within.

a. Plug Fuse b. Cartridge Fuse c. Time-delay Fuse d. Knife-blade fuse

74. A circuit breaker that senses currents caused by ground faults and instantaneously shuts off power before damage or injury can occur.

a. Ground-fault interrupter b. Circuit Breaker c. Fuse d. Distribution Panel

75. A form of air switch in which a hinged copper blade is placed between two contact clips.

a. Mercury Switch b. Float Switch c. Knife Switch d. Toggle Switch

76. A junction box designed to facilitate connecting an electric device or receptacle to a wiring system.

a. Conduit b. Raceway c. Pull Box d. Outlet Box

77. A material that is a poor conductor of electricity, used for separating or supporting conductors to prevent the undesired flow of current.

a. Insulator b. Conductor c. Conduit d. Switch Device

78. A toilet bowl in which the flushing water enters through the rim and siphonic action initiated by a water jet draws the contents of the bowl through the trapway.

a. Siphon-jet b. Reverse-trap c. Siphon-vortex d. Wash-down

79. The clear vertical distance between the spout of a faucet or other supply pipe and the flood level of a receptacle.

a. Air Chamber b. Trap c. Vent Stack d. Air Gap

80. The length of a pipeline measured along the center lone of the pipe and pipe fittings.

a. Roughing-in b. Nominal Diameter c. Developed length d. Branch Interval

81. A valve controlling the flow of water or gas from a main to a service pipe.

a. Curb Cock b. Shutoff Valve c. Corporation Stop d. Gate Valve

82. A reservoir or tank for storing or holding water or other liquid, as rainwater collected from a roof, for use when required.

a. Well b. Water Tower c. Water Tank d. Cistern

83. A device for regulating the supply of water in a flush tank by means of hallow floating ball which by its rise or fall shuts or opens a supply valve.

a. Ball Cock b. Compression Cock c. Key Cock d. Self-closing Cock

84. A coupling device for connecting 2 pipes neither of which can be turned, consisting of two internally threaded end piece which are tightened around the pipes ends to be joined, and an externally threaded center piece, which draws the two end pieces together as it is

rotated.

a. Reducer b. Union c. Nipple d. Coupling

85. Liquid sewage that has been treated in a septic tank or sewage treatment plant.

a. Sludge b. Scum c. Effluent d. Waste water

86. A pit or reservoir serving as a drain or receptacle for water or other liquids.

a. Building Sewer b. Septic Tank c. Sump d. Cistern

87. Sediment that settles out of sewage, forming a semi-solid mass on the bottom of a septic tank

a. Sludge b. Effluent c. Scum d. Leeching Chamber

88. A vent that provides circulation of air between a drainage and a venting system by connecting a vent stack to a horizontal drain between

the first fixture and the soil or waste stack.

a. Branch Vent b. Relief Vent c. Yoke Vent d. Loop Vent

89. A valve that supplies a fixed quantity of water to fixtures for flushing purposes when actuated by direct water pressure.

a. Globe Valve b. Flush Valve Assembly c. Mixing Valve d. Flushometer Valve

90. An outlet, pipe, or receptacle for excess liquid.

a. Backflow b. Overflow c. Back Spill d. Over spill

91. A 180 degree bend in a pipe.

a. Elbow b. Return Bend c. Drop Elbow d. Wye

92. To cause water or other liquid to percolate through something, so as to dissolve out soluble constituents.

a. Aeration b. Aquifer c. Sand filter d. Leach

93. A system of pipes supplying a flow of air to or from a drainage system or providing a circulation of air within the system to protect trap

seals from Siphonage and back pressure.

a. Drainage System b. Vent System c. Storm Drainage System d. Sewage Disposal System

94. A pipe connecting upward from a soil or waste stack below the floor and below the horizontal connection to an adjacent vent stack at a point above the floor and higher than the highest spill level of fixtures for preventing pressure changes in the stack.

a. Yoke Vent b. Relief Vent c. Branch Vent d. Individual vent

95. In circuiting guidelines, what is the maximum convenience outlet for a 15 ampere circuit?

a. 8 outlets b. 7 outlets c. 6 outlets d. 9 outlets

96. In circuiting guidelines, what is the minimum amperes for a small appliance branch circuit in the kitchen, pantry, dining, and family room

a. 20 amperes b. 15 amperes c. 30 amperes d. 45 amperes

97. In National Electric Code, What is the maximum watt shall be the maximum load for each lighting outlet.

a. 40W b. 60W c. 80W d. 100W

98. In National Electric Code, What is the minimum size of copper wire size of all types of convenience outlet wiring?

a. 14 AWG b. 16 AWG c. 10 AWG d. 12 AWG

99. A flange that closed the end of a pipe. There is no opening for the passage of water.

a. Cap b. Plug c. Blind Flange d. Blank Flange

100. The individual office, board, department or agency established or authorized by the office of the president RA 1378 to administer and enforce the provisions of this National Plumbing Code as adapted or amended.

a. Building Officials b. Authority c. City Engineering Office d. MWSS