BUILDING UTILITIES COMPRE EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2024

BUILDING UTILITIES COMPRE EXAM QUESTIONS WITH 100% CORRECT ANSWERS 2024 "Is a physical wave, a mechanical vibration, a series of pressure variations, in an elastic medium " - answerSound A healthy pair of human ear has a detection range of. - answer20 to 20000 HZ Sound travels in air, at sea level, in ____ m/sec. - answer344 m/ sec. "The number of times the cycle of compression and rarefaction of air makes in a given unit of time. " - answerFrequency "Is the persistence of sound after the cause of sound has stopped-a result of repeated reflections. " - answerReverberation "Is caused when reflected sound at sufficient intensity reaches a listener approximately 70 m/ sec. after hear the direct sound. " - answerEcho "Is perceived as a buzzing or clicking sound, and it is comprised of repeated echoes traversing back and forth between two non-absorbing parallel surfaces. " - answerFlutter A device used for sound absorption - answerFibrous Materials This describe the reflection of sound along a curved surface near the surface - answerCreep Sound travels only about ___________m/sec. - answer344 m/sec It is the measurement of the intensity of sound. - answerdecibel It is the limit for comfortable hearing. - answer40 db "It is the time in seconds that a reflected sound diminishes for the case by 60db after the original sound has stopped." - answerReverberation time "It is a type of microphone which equally sensitive sound arriving at it from any direction" - answeromnidirectional mic "It has a stimulating effect, conducive to drinking, induces sleep, best for bars and night club." - answerincandescent "In theory and fundamentals of lighting. It is the science that deals with measurement of light." - answerphotometry "It refers to the unit of intensity of light of one standard candle whose light is concentrated at a point and the light source is assumed to be placed at the center of a hollow sphere of one foot radius." - answercandle power "In physical principles of light, it is the light rays leaving the source strike through, opaque surface which spreads the light in various directions, in addition light is broken up while in reflection, the light bounces back at a different direction." - answerDiffusion "It is the unit of luminous flux, amount f light falling on a surface from the source." - answerLumen "Mho as used in electrical systems calculation is defined as _______." - answerthe reciprocal of ohm "A unit of mechanical power is horsepower. What is electrical power?" - answerWatt "In lighting and illumination calculation, what is the unit for lux?" - answer1 lumen per sq.m. "In Inverse Square Law, it states that: "sound intensity ______ the square of the distance from the source."" - answerVaries inversely with "Is a logarithmic unit of measurement that expresses the magnitude of a physical quantity (usually power or intensity) relative to a specified or implied reference level." - answerDecibel "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" - answerdroppler effect What is a repetitious reflective sound due to parallel walls? - answerflutter - delayed sound heard a fraction of a second after the direction of sound isheard - answerEcho unpleasant or unwanted sound - answerNoise What is the study of reactions of humans to audible sound? - answerpsycho acoustics study of effects on environment upon audible sound - answerenvironmental acoustics - study of sound generated by equipment - answerelectro acoustics What is the distance between two similar points in succession waves traveling in one cycle? - answerwavelength rate of repetition of a periodic phenomenon - answerfrequency - "a sensation felt by the brain resulting from the distance of molecules in the air" - answersound - What is the amount of sound energy produced by the source? - answermagnitude unit of loudness of sound - answerdecibel at speed of sound normal temperature and pressure - answervelocity - What is the reflected sound that gathers in a central portion of the room? - answersound foci one characterized by large amounts of absorption - answerdead room