Building Utilities By Alfred
110 Questions
| Total Attempts: 257
Buildings are designed in different ways and mostly depend on how it will be used. The quiz below is designed to see how much you understand from the building utilities course on Mep-Mechanical, electrical, plumbing and acoustics. Try it out and see if you need more hours to study. All the best!
Questions and Answers
- 1.The clarity of a sound, particularly a message conveyed by sound, such that it can be easily and completely understood. A slurred sound may be well heard but the message it carries may still not be well understood, it is inarticulate. Also, a clear and distinct sound may be drowned out by a nearby louder noise, rendering the message not understandable, inarticulate. Echoes also cause articulation problems. Articulation is most often measured in some form of a desired signal to unwanted noise ratio. (Sound Acoustics Terminology)
- A.
A. Intelligibility
- B.
B. Lively
- C.
C. Articulation
- 2.. An apparent shift in the frequency occurring when an acoustic source and listener are in motion relative to each other, the frequency increasing when the source and the listener approach each other and decreasing when they move apart. (LA 010)
- A.
A. wave front
- B.
b.droppler effect
- C.
C. logarithm effect
- 3.The process of defining the desirable condition of sound in an acoustic space. It integrates the direct, early and late reflections with the reverberation, including a sense of timing and direction for each into an appropriate and desirable acoustic condition for the listener. It combines both the art and science of sound. It requires an understanding of the purpose to be served by each acoustic space. As an art form, it recognizes the aesthetic side of sound, the impression that most people prefer to have of each particular type of sound that exists in some particular place. As a science, it is based on psychoacoustics. (Sound Acoustics Terminology)
- A.
A. voicing
- B.
B. waving
- C.
C. articulating
- 4.Sound that exists within a limited frequency range, between a lower set frequency and a set upper frequency. The difference between the lower and upper frequency is specified to be equal to the lower frequency. The octave sequence for the note "C" starts at 31 Hz and continues thru 63 Hz, 125 Hz, 250 Hz, 500 Hz, 1k Hz, 2k Hz, 4k Hz, 8k Hz and ends at 16k Hz. (k = thousand). (LA 010) (Sound Acoustics Terminology)
- A.
A. pitch
- B.
B. octave
- C.
C. band
- 5.A single number rating of the performance of a building material or construction assembly in preventing the transmission of airborne sound, derived by comparing the laboratory TL test curve for the material or assembly to a standard frequency curve. (LA 014)
- A.
A. impact insulation class
- B.
B. airborne sound transmission
- C.
C. sound transmission class
- 6.The higher the impact insulation class rating, the less effective is the construction in isolating impact noise. The IIC rating replaces the previously used Impact Noise Rating and is approximately greater to the INR rating + 51 db for a given construction. (LA 014)
- A.
A. true
- B.
B. false
- C.
C. maybe
- 7.A unit for measuring the apparent loudness of a sound, judge by a group of listeners to be equal to the loudness of a 1000 hertz reference sound judge by a group of listeners to be equal in loudness to the given sound. (LA 011)
- A.
A. metric sabin
- B.
B. resonance
- C.
C. sone
- 8.A measure of the clarity of sound based on the comprehension of the message being conveyed by sound. A "cat, bat, tat, rat... type of recognition test. The conversational version of Articulation. (Sound Acoustics Terminology)
- A.
A. Intelligibility
- B.
B. Lively
- C.
C. Articulation
- 9.An empirically determined index, which combines into a single value the effect of temperature, humidity and air movement on the sensation of warmth or cold felt by the human body. The numerical value is that of the temperature of still saturated air which could induce an identical sensation. (ME 030)
- A.
A. Design Work Pressure
- B.
B. Effective Pressure
- C.
C. Effective Temperature
- 10.The toothed portion of the threshold plate at both ends of an escalator or moving walk, designed to mesh with the groove surface of the moving steps or tradeway. (ME 013)
- A.
A. combplate
- B.
B. track
- C.
C. newel
- 11.Classification for A fire assembly having a 1-hour or 1/12-hour fire-resistance rating for protecting openings in 1-hour or 2-hour fire separation, exit stairway and vertical shafts. (ME 065)
- A.
A. Class A
- B.
B. Class B
- C.
C. Class C
- 12.A fire involving flammable liquid , as gasoline, oil, and grease, which must be extinguished by excluding air and inhibiting the release of combustible vapors. (ME 066)
- A.
A. Class A fire
- B.
B. Class B fire
- C.
C. Class C fire
- 13.A dry-pipe sprinkler system through which after flow is controlled by a valve operated by fire detection devices more sensitive than those in the sprinkler heads. It is used when an accidental discharge would damage valuable materials. (ME 066)
- A.
A. preaction system
- B.
B. dry-pipe system
- C.
C. deludge system
- 14.A unit of heat equal to the quantity of heat required to raise the temperature of one kilogram of water 1 degree Celsius at a pressure to one atmosphere, equivalent to 1000 small calories. (ME 038)
- A.
A. calorie
- B.
B. large calorie
- C.
C. therm
- 15.It is expressed as the temperature difference required to cause heat flow through a unit area of material of given thickness at the rate of one heat per unit time. (ME 039)
- A.
A. thermal transmittance
- B.
B. U-value
- C.
C. thermal resistance
- 16.The transfer of heat by the circulatory motion of the heated parts of a liquid or gas owing to a variation in density and the action of gravity. (ME 039)
- A.
A. conduction
- B.
B. transmittance
- C.
C. convection
- 17.A preformed, non-structural insulating board of foamed plastic or cellular glass. Its insulation having closed-cell structures, as extruded polystyrene and cellular glass, are moisture resistant and may be used with contact with the earth. (ME 040)
- A.
A. batt insulation
- B.
B. loose-fill insulation
- C.
C. rigid board insulation
- 18.An air-conditioning assembly containing the fans, filters, and other components necessary to treat and distribute conditioned air to an entire building or to specific zones within the building. (ME 046)
- A.
A. damper
- B.
B. chiller water plant
- C.
C. air-handling unit
- 19.A system of mechanical ventilation in which fresh air is forced into the space to be ventilated from a chamber at a pressure slightly higher than atmospheric pressure, so as to expel stale air. (ME 048)
- A.
A. cross-ventilation
- B.
B. centrifugal ventilation
- C.
D. plenum ventilation
- 20.An air-conditioning system in which high velocity ducts supply conditioned air from a central plant to each zone where it mixes with room air and is further heated or cooled in an induction or fan-coil unit. (ME 047)
- A.
A. dual-duct system
- B.
B. all-water system
- C.
C. air-water system
- 21.What is the color coding for piping of Pneumatic Division? (CDEP IV-13)
- A.
A. yellow
- B.
B. white
- C.
C. gray
- 22.What is the color coding for piping of Steam division? (CDEP IV-53)
- A.
A. yellow
- B.
B. white
- C.
C. blue
- 23.. A new air-conditioning system which answers the need to respond to changes in room cooling capacities of controlling air flow. (CDEP IV-46)
- A.
A. VAV
- B.
B. VRV
- C.
C. Split type
- 24.A safety device of a passenger elevator which reduces the collision shock of a car or counterweight due to over travel beyond the lowest stop. This device stops the car or counterweight safely. (CDEP IV-57)
- A.
A. fascia plate
- B.
B. limit switch
- C.
C. buffer
- 25.An engine or motor operated by steam, gas, air, electricity, liquid or gaseous fuels, liquids in motion or other forms of energy whose main function is to drive or operate, either directly of indirectly, other mechanical equipment. (CDEP IV -51
- A.
A. prime mover
- B.
B. unfired pressure vessel
- C.
C. process machine
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