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1. The minimum sound pressure level of sound which stimulates the ear to the point at which discomfort gives way to definite pain.
a. Noiseb. Threshold of Audibilityc. Threshold of Paind. Ultrasonic
2. Regarding number 1 question: what point of decibel is that?
a. 80dbb. 130dbc. 48dbd. 5db
3. The rate at which acoustic energy is radiated. Usually measured in watts.
a. Phonb. Octavec. Sound Powerd. Sound Pressure
4. The lowest frequency present in a complex tone.
a. Partialsb. Fundamentalc. Sound Absorptiond. Harmonics
5. Transmission of sound along curve surface.
a. Creepb. Free Fieldc. Direct Sound Fieldd. Sound Diffraction
6. Threshold of Feeling.
a. 48dbb. 72dbc. 120dbd. 180db
7. Speed of sound.
a. 1,130 ft/secb. 186,000 miles/secc. 38 m/secd. 1,310 m/sec
8. The science of sound, including the generation, transmission, and effect of sound waves.
a. Pure Toneb. Complex Tonec. Soundd. Acoustic
9. The unit in which the level of various acoustical quantities is expressed.
a. b. c. Decibeld. Sabin
10. A rapid succession of echoes caused by reflection of sound back and forth between two parallel walls.
a. Echob. Reverberationc. Background Soundd. Flutter Echo
11. Drowning out high frequency sounds by low frequency sounds.
a. Maskingb. Sound Diffusionc. Sound Insulationd. Pure Tone
12. A unit of loudness level.
a. Phonb. Sabinc. Hertzd. Decibel
13. Attribute of an auditory sensation which enables us to order sound on a scale extending from low to high frequency.
a. Pitchb. Complex Tonec. Pure Toned. Octave
14. Sound waves which have been reflected back to a listener with sufficient magnitude and time delay.
a. Reverberationb. Flutter Echoc. Echod. Noise
15. The persistence of sound in an enclosed space as a result of repeated reflection or scattering of sound.
a. Flutter Echob. Noisec. Resonanced. 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 Materialsb. Panel / Membrane Absorbersc. Cavity / Hemholtz Resonatorsd. Acoustical Blanket
17. When sound travels in all directions.
a. Resonanceb. Sound Diffusionc. Sound Reflectiond. Sound Diffraction
18. A device used to vary the volume of air passing through an air outlet, inlet or duct.
a. Filterb. Desiccantc. Ventilationd. 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. Condenserb. Compressorc. Convectiond. Refrigerant
20. A substance which produces refrigerating effect by absorbing heat while expanding or evaporating.
a. Condenserb. Compressorc. Convectiond. Refrigerant
21. The amount of heat which is absorbed or evolved in changing the state of the substance without changing its temperature.
a. Dew Pointb. Latent Heatc. Sensible Heatd. 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 ACb. Split Type ACc. Package Type ACd. Centralized Type AC
23. A type of Slit Type Air Conditioning Unit
a. Unit ACb. Split Type ACc. Package Type ACd. 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. Condenserb. Compressorc. Convectiond. Refrigerant
25. That part of an airconditioning system in which refrigerant is vaporized thereby taking up heat and producing cooling.
a. Evaporatorb. Condenserc. Vapor Pumpd. Air Distribution
26. Any device equipped with heating element used in the refrigerating system to increase the pressure of the refrigerant.
a. Compressorb. Ventilationc. Humidistatd. Generator
27. Heat transmission, either natural or forced by currents resulting from differences in density due to temperature difference in the heated space.
a. Condenserb. Compressorc. Convectiond. Refrigerant
28. The ratio of light absorbed by a material to the light falling upon it.
a. Absorptionb. Room Cavity Ratioc. Sabinsd. Black Colored Wall
29. A unit of illumination equal to 1 lumen/m2
a. Candelab. Luxc. Lambertd. Footcandle
30. The various process, systems, forms and/or equipment used to provide light and illumination.
a. Illuminationb. Luminescencec. Intensityd. Lighting
31. A unit of Luminous Flux
a. Candelab. Luxc. Lambertd. Lumen
32. The attribute of visual perception in accordance with which a surface appears to emit more or less light.
a. Brillianceb. Brightnessc. Visible Lightd. Illuminance
33. The rate of flow of light through a surface.
a. Infrared Radiationb. Luminosity c. Luminous Fluxd. Luminaire
34. A unit of luminous intensity; international candle
a. Candelab. Candela Powerc. FootcandleFootlambert
35. The ratio of reflected light to incident light.
a. Luminous Fluxb. Reflectancec. 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 Pipeb. Soil Pipec. Indirect Wasted. 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 Pipeb. Storm Drainage Pipec. Soil Piped. Waste Pipe
38. Any wastewater containing animal or vegetable matter in suspension or solution and may include liquids containing chemical in solutions
a. Sewageb. Sewerc. Soil Piped. Waste Pipe
39. A pressure within the sanitary drainage system or vent piping system that is greater thanatmospheric pressure (>14.7 psi)
a. Backflowb. Back pressurec. Back Siphonaged. 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. Capb. Cleanoutc. Deadendd. Plug
41. A bathroom containing a water closet and a lavatory.
a. Toilet and Bathb. Powder Roomc. Full Bathd. Half Bath
42. How many gallons of water for the Water Closet Flushing requirements?
a. 30 gallonsb. 0.75 2 gallonsc. 3 5 gallonsd. 2 2.5 gallons
43. Water which undergoes treatment, either physical, biological or chemical means to improve water quality.
a. Contaminated Waterb. Purified Waterc. Natural Waterd. Pure Water
44. The very common treatment can remove suspended particles, some bacteria and some color.
a. Sedimentationb. Coagulationc. Aerationd. Filtration
45. Unit of EMF / measure of the pressure or force which keeps electricity in motion.
a. Resistanceb. Batteryc. Voltaged. 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. Parallelb. Shuntc. Seriesd. Circuit
47. A combination of two or more electric cells capable of storing and supplying direct current by electrochemical means.
a. Batteryb. Generatorc. Shuntd. Direct Current
48. Uses insulated cables instead of Bus Bars / rigidly mounted in an open space frame.
a. Bus Bars b. Cable Busc. Racewayd. Cable Tray
49. An enclosed channel designed expressly for holding wires, cables or busbars with additional functions.
a. Bus Bars b. Cable Busc. Racewayd. 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 Busc. Racewayd. 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 Busc. Racewayd. 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 Lampb. Fusec. Incandescent Bulbd. Circuit Breaker
53. All parts of a circuit are electrically connected end to end.
a. Parallelb. Seriesc. Shuntd. 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. Parallelb. Seriesc. Shuntd. Short Circuit
55. Final distribution point feeding out to the branch circuits containing the electrical utilization apparatuses and devices.
a. Transformerb. Switchboardsc. Panelboardsd. Branch Circuit
56. The lowest portion of the inside top surface of the channel through trap.
a. Crownb. Spring Linec. Dipd. 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 Wellsb. Driven Wellsc. Bored Wellsd. Drilled Wells
58. How many gallons do an average daily consumption of a Bathtub?
a. 5 gallonsb. 30 gallonsc. 40 gallonsd. 100 gallons
59. Water from laundries, wash basins, sinks, shower, and bathtub.
a. Soft Waterb. Grey Waterc. Black Waterd. Storm Water
60. Minimum fixture drains size for Water Closets.
a. 1.5b. 2 c. 3d. 4
61. Minimum fixture drains size for a Bathtub
a. 1.5b. 2c. 3d. 4
62. These are fixtures that are installed in janitors closets and building maintenance areas for use by the building maintenance personnel.
a. Broom Closetb. Service Sinkc. Master Control Paneld. Wash Basin
63. Location of cleanouts should be place at every ________ run of horizontal soil or waste piping.
a. 25mb. 10mc. 20md. 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 valveb. Backwater valve c. Downspoutd. 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 Pipeb. Galvanize Steel Pipesc. Galvanize Wrought Iron Piped. 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. cPVCb. ABSc. ACETALd. 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. Polyethyleneb. 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. Cesspoolb. Privyc. Latrined. Septic Tank
69. A Piece of pipe lesser than 12 length / threaded on both ends.
a. Bushingb. Air Chamberc. Nippled. 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. uPVCb. Copper Tubingc. Polyethylened. 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 outletb. Pullboxc. Outlet Boxd. 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 Cableb. Armored Cable c. Mineral-insulated Cabled. Coaxial Cable
73. A cartridge fuse having a metal blade at each end for making contact with the fusible link within.
a. Plug Fuseb. Cartridge Fusec. Time-delay Fused. 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 interrupterb. Circuit Breakerc. Fused. Distribution Panel
75. A form of air switch in which a hinged copper blade is placed between two contact clips.
a. Mercury Switchb. Float Switchc. Knife Switchd. Toggle Switch
76. A junction box designed to facilitate connecting an electric device or receptacle to a wiring system.
a. Conduitb. Racewayc. Pull Boxd. 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. Insulatorb. Conductorc. Conduitd. 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-jetb. Reverse-trapc. Siphon-vortexd. 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 Chamberb. Trapc. Vent Stackd. Air Gap
80. The length of a pipeline measured along the center lone of the pipe and pipe fittings.
a. Roughing-inb. Nominal Diameterc. Developed length d. Branch Interval
81. A valve controlling the flow of water or gas from a main to a service pipe.
a. Curb Cockb. Shutoff Valvec. Corporation Stopd. 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. Wellb. Water Towerc. Water Tankd. 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 Cockb. Compression Cockc. Key Cockd. 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. Reducerb. Unionc. Nippled. Coupling
85. Liquid sewage that has been treated in a septic tank or sewage treatment plant.
a. Sludgeb. Scumc. Effluentd. Waste water
86. A pit or reservoir serving as a drain or receptacle for water or other liquids.
a. Building Sewerb. Septic Tankc. Sumpd. Cistern
87. Sediment that settles out of sewage, forming a semi-solid mass on the bottom of a septic tank
a. Sludgeb. Effluentc. 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 Ventb. Relief Ventc. Yoke Ventd. 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 Valveb. Flush Valve Assemblyc. Mixing Valve d. Flushometer Valve
90. An outlet, pipe, or receptacle for excess liquid.
a. Backflowb. Overflowc. Back Spilld. Over spill
91. A 180 degree bend in a pipe.
a. Elbowb. Return Bend c. Drop Elbowd. Wye
92. To cause water or other liquid to percolate through something, so as to dissolve out soluble constituents.
a. Aeration b. Aquiferc. 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 Systemb. Vent System c. Storm Drainage Systemd. 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 Ventb. Relief Ventc. Branch Ventd. Individual vent
95. In circuiting guidelines, what is the maximum convenience outlet for a 15 ampere circuit?
a. 8 outletsb. 7 outletsc. 6 outletsd. 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 amperesb. 15 amperes c. 30 amperesd. 45 amperes
97. In National Electric Code, What is the maximum watt shall be the maximum load for each lighting outlet.
a. 40Wb. 60Wc. 80Wd. 100W
98. In National Electric Code, What is the minimum size of copper wire size of all types of convenience outlet wiring?
a. 14 AWGb. 16 AWGc. 10 AWGd. 12 AWG
99. A flange that closed the end of a pipe. There is no opening for the passage of water.
a. Capb. Plugc. Blind Flanged. 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 Officialsb. Authorityc. City Engineering Officed. MWSS
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