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Questions in this quiz (100)
11.Mho as used in electrical systems calculation is defined as _______.
- Athe reciprocal of ohm
- BA unit of inductance
- CA unit of resistance
- DThe reciprocal of siemen
2A unit of mechanical power is
horsepower. What is electrical
power?- AWatt
- BVolt-ampere
- CAmpere
- DWatt and Volt-ampere
3The following are basic component
parts of an escalator except____.- ABalustrade assembly
- BContinuous belt
- CStep assembly
- DGovernor
4In lighting and illumination
calculation, what is the unit for lux?- A1/π candela per sq.m.
- B1 lumen per sq.m.
- C1 lumen per sq.ft.
- D1/π candela per sq.ft.
5The first section of water supply
piping in a building after the water
meter.- AWater main
- BWater distributing pipe
- CBuilding supply pipe
- DWater service pipe
6Tesla is the unit of____.
- AMagnetic flux
- BMagnetic induction
- CBoth Magnetic flux and Magnetic induction
- DNone of these
7In Inverse Square Law, it states that:
“sound intensity ______ the square
of the distance from the source.”- AVaries inversely with
- BVaries proportionally with
- CIs equal to
- DIs less than
8Which of the following is not a
component of a hydraulic elevator?- APlunger
- BOil reservoir
- CGate valve
- DCounterweight
9A bathroom containing a water
closet, a lavatory, and a bathtub.- AFull bath
- BHalf bath
- CThree quarter bath
- DQuarter bath
10The following are elements of
centralized airconditioning system
except _______.- AAir handling unit
- BControl equipment
- CMethod of cooling
- DAll of these
11Acoustics is a science that
concerns with ______.- ATransmission of sound
- BEffect of sound waves
- CGeneration of sound
- DAll of the above
12A valve in which the flow of water is cut
off by means of a circular disk that fits
against the valve seat. The plane of
movement of the disk is parallel to the
normal direction of flow of water, which
is turned through a tortuous passage to
direct the flow normal to the face of the
disk.- AGate valve
- BCheck valve
- CGlobe valve
- DAngle valve
13A transformer is ______.
- AAn ac device
- BA dc device
- CA mechanical device used to step
up or step down voltage in ac
14A factor used in calculating cooling
load that includes heat transferred
from walls, doors, ceilings, etc. is
known as _____.- ASolar load
- BInfiltration and ventilation load
- CThermal load
- DInternal load
15A receptacle attached to a
plumbing system other than a trap
in which water or wastes may be
collected or obtained for ultimate
into the plumbing system.- AValve
- BWaste pipe
- CFitting
- DFixture
16The following are examples of prefabricated
acoustical units except
______.- ASlotted tile or panel
- BFissured tile panel
- CShredded wood foamboard
- DHardwood panel
17The following are ways in which
heat may be transferred
except____.- AConduction
- BConvection
- CPolarization
- DRadiation
18Who said these prophetic words: “Let
the future tell the truth and evaluate
each one according to his work and
accomplishment. The present is theirs,
the future for which I really worked for is
mine.”?- ANikola Tesla
- BJames Watt
- CAndre Marie Ampere
- DGeorge Westinghouse
19Which material would effectively
reduce reflected noise and
reverberation time to produce safe
and enjoyable surrounding?- APolyurethane foam sound absorber
- BMelamine foam linear wedges
- CAcoustical baffles
- DVinyl encapsulate acoustical baffles
20A type of raceway specially
constructed for the purpose of
pulling in or the withdrawing of
wires or cables after the conduit is
in place.- AIntermediate metal conduit (IMC)
- BRigid metal conduit (RMC
- CSurface metal raceway (SMR)
- DElectrical metallic tubing (EMT)
21The typical truss configuration used
in the installation of an escalator.- A2 section truss
- B3 section truss
- C4 section truss
- D5 section truss
22Any group of two or more similar
adjacent fixtures which discharge
into a common horizontal waste or
soil branch.- ABattery of fixtures
- BMultiple fixtures
- CSeries of fixtures
- DFixture group
23The trade name for an insulated
conductor with type letter THHN is
______.- AMoisture resistant thermoplastic
- BThermoplastic
- CHeat resistant thermoplastic
- DNone of these
24The abbreviation DWV stands for
______.- Adrainage, water and vent
- BDrainage, waste and valve
- CDurham, water and vent
- DDrainage, waste and vent
25Creep is the phenomenon whereby
sound travels in a ______.- AStraight line direction inside an
anechoic chamber - BRectangular shaped cavity
- CFlat surface
- DCurve surface
- AStraight line direction inside an
26What is / are the advantage/s of a
circuit breaker over a fuse?- AIt can act as a switch
- BIts position can be easily detected
(close/open) - CIt can be used again after fault has
been corrected - DAll of these
27Which is the following
characterizes centrallized
airconditioning system?- AIt uses ducts
- BHas cooling tower
- CProvided with air handling unit
- DAll of these
28A p-shaped trap commonly used on
most plumbing fixtures except for
fixture have integral trap.- AGooseneck
- BDrum trap
- CBag trap
- DRunning trap
29Sound Transmission Loss (STL)
is/are affected by the following
____.- AIntensity of sound from source
- BMaterial density
- CMedium
- DAll of the above
30What switch combination may be used in
order to control a lamp or group of lamps
in three different locations?- A2-s4w and 1-s3w
- B3 single pole switches
- C3-s3w
- D2-s3w and 1-s4w
31The total cooling output of an
airconditioner during its annual usage, in
BTU/hr divided by the energy input
during the same period, in watt-hours is
known as_____.- AIntegrated part load value
- BAnnual fuel utilization efficiency
- CEnergy efficiency ratio
- DSeasonal energy efficiency ratio
32This acoustical material is
manufactured from rock wool, glass
fibers, wood fibers, hair felt, etc.
generally installed on wood or
metal framing system.- AAcoustical tile
- BAcoustical plaster
- CAcoustical (isolation) blanket
- DAcoustical foam
33An outhouse or structure used for
the deposition of excrement.- ASeptic tank
- BPrivy
- CDrainage pit
- DPrivy vault
34Acoustical cotton fiber composite board is manufactured using BAP. What does BAP stand for?
- ABoarded acoustical panel
- BBeaded and pressed
- CBent and polished
- DBonded acoustical panel
35Which type of refrigerant is recommended for residential, commercial, and industrial application using split type air-conditioning system?
- AR-11
- BR-12
- CR-22
- DR-23
36It characterizes short circuit
- AHigh resistance, high current
- BLow resistance, low current
- CLow resistance, high current
- DHigh resistance, low current
37A water supply pipe that extends vertically one full storey or more to convey water to fixture branches or group of fixtures.
- AUp pipe
- BRiser
- CStack pipe
- DWater stack pipe
38A unit or assembly units or sections and associated fittings forming a rigid structural system used to support cables.
- ACable bus
- BCable tray
- CBusway
- Dwireway
39Fusible material in a fuse may be made of any of the following except___.
- ALead
- BSilver
- CIron
- DTin
40Which of the following factors affect/s room acoustics?
- AShape and proportion of room
- BRoom cavity
- CSeating and other furnishings
- DAll of the above
41A general term used for any vertical line of soil, waste or vent piping.
- AVent pipe
- BWaste pipe
- CStack
- DSoil pipe
42It affects the resistance of a conductor.
- ALength
- BArea
- CTemperature
- DAll of these
43A condition characterized as vertically downward directly below the luminaire. What is that term?
- ALumen
- BPoint source
- CNadir
- Dlambert
44The water supply pipe provided by the water utility company where local individual connection is done.
- AWater supply source
- BWater main
- CWater service pipe
- DBuilding supply pi
45The term impedance is used in transformers and other devices in ac is a combination of _______.
- AResistance and reactance
- BInductance and capacitance
- CResistivity and conductivity
- DNone of these
46A type of gypsum board available in 1 1/2 inches or 5/8 inch thickness and has improved fire resistance through the use of fibers mixed with gypsum core.
- AType x
- BType c
- CRegular
- DWater resistant board
47It is also known as electric panel or load center.
- AConvenience outlet
- BPanelboard
- COutlet
- DBranch circuit
48It is the product of surface area (sq.ft.) and sound absorption coefficient (SAC). It has the unit sabin.
- ASound attenuation
- BSound absorption
- CSound amplification
- DNoise reduction
49A cylindrical conduit or conductor, the wall thickness is sufficient to receive a standard pipe.
- AConduit
- BPipe
- CFitting
- Dleader
50Wallace Clement Sabine, an American physicist who pioneered work on sound is said to be the father of ____?
- AEnvironmental acoustics
- BRoom acoustics
- CArchitectural acoustics
- DAcoustical science
51A loosely lined excavation in the ground which receives the discharge of a septic tank and designed to permit the effluent from the septic tank to seep through the bottom and sides of the pit.
- APrivy
- BDrain pit
- CSeptic tank
- Dcesspool
52A factory assembly of one or more conductors, each individually insulated and enclosed in a metallic sheath of interlocking metal tape, or a smooth corrugated metallic tube.
- Ametal clad cable (type MC)
- BShielded non-metallic sheathed cable (type SNM)
- CArmored cable (type AC)
- DMineral insulated, metal sheathed cable (type MI)
53It is analogous to pressure in water flow.
- AResistance
- BVoltage
- CCurrent
- Dpower
54When sound impinges on a surface such as walls, floor, ceiling, etc. It is referred to as _____.
- ALiquidborne sound
- BSolidborne sound
- CAirborne sound
- DStructureborne sound
55The art and science of installing in buildings the pipes, fixtures and other apparatus for bringing in water supply and removing water and waterborne waste.
- APlumbing system
- BSanitary drainage system
- CDrainage system
- Dplumbing
56Any of a variety of soft floor finishes made of synthetic materials such as nylon or natural material such as wool. It is either glued directly to the floor or installed over an underlayment of hair felt or foam rubber. What is it?
- APanel absorber
- BCarpet
- CCurtain and fabrics
- DVolume resonator
57Which of the following is a violation of all the provisions in the mechanical code on elevator design and installation?
- A30mm is the diameter of hoisting and counterweight cables
- B600mm is the depth of elevator pit measured from the bottom of pit to the underside of the car platform
- C3 ropes are required for traction type elevator
- D4 ropes are required for drum type elevator
58That part of the drainage system that extends from the end of the building drain and conveys its discharge to the public sewer, private sewer, individual sewage disposal system or other appropriate point of disposal
- ABuilding sewer
- BBuilding drain
- CBuilding storm drain
- DBuilding sewage pipe
59A branch of acoustics that involves the control of noise pollution, environmental noise, which include motor vehicles, aircraft noise, etc.
- AEnvironmental acoustics
- BMusical acoustics
- CArchitectural acoustics
- DPsychological acoustics
60Alternating current is characterized as having _____.
- APositive and negative polarity
- BAverage value is zero
- CHas frequency
- DAll of these
61A valve in which the flow of liquid is controlled by a rotating drilled ball that fits tightly against a resilient (flexible) seat in the valve body.
- AAngle valve
- BCheck valve
- CFloat valve
- DBall valve
62A vertical length of soil or waste stack at least 8 feet in height (a storey high), within which the horizontal branches from one storey or floor of the building or structure are connected to the stack.
- AFixture branch
- BBranch drain
- CBranch pipe
- DBranch interval
63A 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.
- AVent stack
- BYoke vent
- CUnit vent
- DIndividual vent
64Pyramid is a type of commercially produced acoustical tile. Which of the following is not a characteristic of this material?
- AMade of open celled polyurethane acoustical foam
- BAvailable in 2,3, & 4inch thickness
- CTetrahedral in shape
- DIdeal for audio room application
65This material is so named in honor of a German physicist, consista of a holllow material with a small hole on one side. This is used to detect individual frequency of complex acoustic wave configuration
- ATransondent
- BHermholtz resonator
- CPyramid
- DPanel absorber
66A kind of return bend of small-sized faucet, one end of which is about one foot long and the other end is about three inches. It is commonly used as a faucet for pantry sink and drinking fountain. Also the lead connection between the service pipe and the water main. Also a p-trap.
- ASpigot
- BFaucet
- CTailpiece
- Dgooseneck
67A continuous belt (chain) attached to the handrail and directly connected to the steps is known as _____.
- AEndless belt
- BBalustrade assembly
- CSprocket assembly
- Dhandrail
68What is the minimum distance between the handrails of escalators?
- A600mm
- B558mm
- C658mm
- D650mm
69A watertight receptacle which the discharge of sanitary plumbing system or part thereof, designed and constructed to retain solids, digest organic matter through a period of detention and to allow the liquids to discharge into the soil outside of the tank through a system of open jointed subsurface piping or seepage pit.
- ASeepage pit
- BSeptic tank
- CPrivy vault
- Dcesspool
70Which material would exhibit the highest sound absorption coefficient (SAC) value?
- AMarble
- BWood
- CPlastic
- DCarpet
71A common measure of the probable discharge into the drainage system by various types of plumbing fixtures on the basis of one unit of this being equal to a discarge rate of 7.5 gallons per minute or one cubic foot of water per minute.
- AFlow rate
- BDrainage fixture unit
- CFlow pressure
- DDrainage flow
72A type of resonator made from empty clay vessels of different sizes. Their absorption ranges from 100-400 hertz.
- AIndividual resonator
- BSlit resonator
- CPerforated resonator
- DNone of the above
73A circuit type where components are electrically connected end to end.
- ASeries circuit
- BParallel circuit
- CSeries parallel circuit
- DNone of these
74The installation of parts of the plumbing system which can be completed prior to installation of fixtures or finishing. This includes drainage, water supply and vent piping and necessary fixture supports.
- ARoughing-in
- BMock-up installation
- CPre-installation
- Dsetting
75These consist of loose fibers or granules and is made from cellulose, fiberglass, rock wool, cotton or other materials. These materials come in bags and are usually blown into cavities using special equipment. What are these?
- AAcoustical foams
- BFoam panels
- CLoose fill insulations
- DFireflexes
76The over-all covering of underground feeder and branch circuit cables shall be ____.
- AFungus resistant
- BCorrosion resistant
- CBoth Fungus resistant and Corrosion resistant
- DNone of these
77A fitting or device designed and constructed to provide, when properly vented, a liquid seal which prevents backflow and passage of foul air and gases without materially affecting the flow of sewage or wastewater through it.
- ATrap
- BFitting
- CPipe
- Dvalve
78The rustling of leaves in breeze is said to be within the ____.
- AThreshold of hearing
- BThreshold of hearing loss
- CThreshold of inaudibility
- DThreshold of feeling
79Unit of capacitance is _____.
- AHenry
- BCoulomb
- CFarad
- Dweber
80A suction created by the flow of liquids in pipe, a pressure less than the atmospheric pressure.
- ABackflow
- BBackpressure
- CSiphonage
- DFlow pressure
81The basic elements of an electric circuit are the following except ____.
- ASource
- BSwitch
- CConducting path
- DElectrical load
82A vertical pipe which conveys only wastewater or liquid waste free of fecal matter.
- AWaste pipe
- BSoil pipe
- CSoil stack
- DWaste stack
83A factory assembly of two or more insulated conductors having an outer sheath of moisture-resistant, flame retardant, non metallic material.
- AService entrance cable (type SE and USE)
- BShielded non metallic sheathed cable (type SNM )
- CNon metallic sheathed cable (type NM and NMC)
- DMineral insulated metal sheathed cable (type MI)
84A pipe which conveys potable water from the building supply pipe to the plumbing fixtures and other outlets.
- AWater service pipe
- BWater main
- CWater distributing pipe
- DBuilding and water supply pipe
85Cables are conductors that are ____.
- ALarger than wires
- BStranded (no.6 AWG and larger)
- CBoth (Larger than wires and Stranded (no.6 AWG and larger)
- DNone of these
86The following statements are true with regards to sound except ___.
- AThat sound is an aural sensation
- BThat sound is caused by oscillation in an elastic medium
- CThat sound travels in a vacuum
- DThat sound is caused by the vibration of particles which move in an infinitesimal amount causing particles to impart motion and energy to them
87Any pipe which conveys the discharge of water closet, urinal or fixtures having similar function, with or without the discharges from other fixtures to the building drain or building sewer.
- ASoil pipe
- BWaste pipe
- CBuilding drain
- DBuilding sewer
88Copper as a conductor has the property/properties of being ____.
- ADuctile
- BMalleable
- CDuctile and Malleable
- DNone of these
89In a building consists of the water service pipe, water supply line, water distributing pipes and the essential branch pipes, valves and all other appurtenances for the supply of potable water.
- AWater supply system
- BWater pipe system
- CWater distribution system
- DBuilding water service and sewage piping system
90The velocity of sound is affected by _____.
- ATemperature
- BKind of medium
- CMaterial density
- DAll of these
91Which of the following metallic materials is considered as the best conductor of electricity?
- ACopper
- BAluminum
- CIron
- DGold
92What aspect/s of environment or surroundings is/are considered in air-conditioning system for human comfort?
- ATemperature of the surrounding air
- BMotion of air
- CBoth
- DNone of these
93Example/s of conductors-on-insulator wiring is are ______.
- AConcealed knob and tube
- BOpen wiring on insulators
- CBoth
- DNone of these
94What is the refrigerant name of R-12?
- AMonochlorotrifluoromethane
- BDichlorodifluormethane
- CMonochlorodifluormethane
- DTrichloromonofluoromethane
95The recommended speed for escalators ranges from____.
- A90-120fpm
- B130-180fpm
- C165-180fpm
- D60-80fpm
96A type of surface flush raceway designed to receive conductors and receptacles assembled in the field or in the factory.
- AUnderfloor raceway
- BMulti-outlet assembly
- CCellular metal floor raceway
- DSurface metal raceway (SMR)
97Transondent facings are those transparent facings with holes. Which facing will reflect more sound?
- A10% opening
- B20% opening
- C30% opening
- D40% opening
98A type of switch used for transferring one or more load conductor connections from one power source to another.
- ATransfer switch
- BIsolating switch
- CGeneral use switch
- DGeneral snap switch
99Which of the following sources of sound produces the highest sound pressure level (SPL)?
- ALoud street noise
- BAccelerating motorcycle 50ft away
- COffice activities
- DCafeteria with people in it
100What are the property(ies) of concrete as an acoustical material are/is important?
- AAerated concrete is fairly absorptive
- BConcrete provides virtually no absorption
- CConcrete accepts and transmits impact sound
- DAll of the above
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- Patricia SL
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