ESA II – Quiz 3 – Energy and Sustainability Analysis – practice material
Which loud Speaker type is best suited for distributed array systems - correct answer ✔✔90x90
Which elevator has the highest operating height - correct answer ✔✔Gearless traction
What mechanism did Elisha Otis invent that allowed the widespread use of elevators for
passenger service - correct answer ✔✔safety features
Which type of elevator is commonly used for a two story building - correct answer ✔✔hole-less
hydraulic
Which acoustic quality has an RT of greater than 2 seconds, is good for music, and works well
with shoebox forms - correct answer ✔✔reverberance
What material condition causes sound to diffuse throughout a space - correct answer ✔✔when
sound is reflected from convex or rough surfaces
Which Elevator is slowest - correct answer ✔✔Hole-less Hydraulic
Which Elevator is the fastest - correct answer ✔✔gearless traction
the absorption coefficient for an acoustic material is - correct answer ✔✔the ratio of sound
absorbed to incident sound
What is the standard angle of inclination of escalators in the US - correct answer ✔✔30 degrees
, For elevators, what is a buffer - correct answer ✔✔piston or spring in the pit that provides last-
ditch safety measure
What is the accepted maximum number of floors escalator banks ascend/descend (excepting
retail/merchantile) - correct answer ✔✔four
in order to optimize the amplified hearing environment, the far throw of a centralized cluster of
loud speakers should be ____ near the throw - correct answer ✔✔no more than two times
_____ absorbers use a thin sheet of rigid material over an air space to abate low frequency
noise - correct answer ✔✔panel
rooms for speech need ____ reverberation times - correct answer ✔✔low
the escalator safety feature that prevents clothing and other things from being pulled down
between the step and the landing is called - correct answer ✔✔comb plate
in order to localize sound, what is the best position for loudspeaker placement - correct answer
✔✔central cluster
What is the main reason to include an elevator lobby - correct answer ✔✔to keep corridor clear
what do fibrous materials, panel resonators, and volume resonators so to sound - correct
answer ✔✔absorb
signals to loudspeakers situated more that_____ feet away from the sound source should be
delayed to ensure reinforcement arrives after the direct sound - correct answer ✔✔40
materials with an absorption coefficient > .20 are acoustically - correct answer ✔✔absorptive
Which loud Speaker type is best suited for distributed array systems - correct answer ✔✔90x90
Which elevator has the highest operating height - correct answer ✔✔Gearless traction
What mechanism did Elisha Otis invent that allowed the widespread use of elevators for
passenger service - correct answer ✔✔safety features
Which type of elevator is commonly used for a two story building - correct answer ✔✔hole-less
hydraulic
Which acoustic quality has an RT of greater than 2 seconds, is good for music, and works well
with shoebox forms - correct answer ✔✔reverberance
What material condition causes sound to diffuse throughout a space - correct answer ✔✔when
sound is reflected from convex or rough surfaces
Which Elevator is slowest - correct answer ✔✔Hole-less Hydraulic
Which Elevator is the fastest - correct answer ✔✔gearless traction
the absorption coefficient for an acoustic material is - correct answer ✔✔the ratio of sound
absorbed to incident sound
What is the standard angle of inclination of escalators in the US - correct answer ✔✔30 degrees
, For elevators, what is a buffer - correct answer ✔✔piston or spring in the pit that provides last-
ditch safety measure
What is the accepted maximum number of floors escalator banks ascend/descend (excepting
retail/merchantile) - correct answer ✔✔four
in order to optimize the amplified hearing environment, the far throw of a centralized cluster of
loud speakers should be ____ near the throw - correct answer ✔✔no more than two times
_____ absorbers use a thin sheet of rigid material over an air space to abate low frequency
noise - correct answer ✔✔panel
rooms for speech need ____ reverberation times - correct answer ✔✔low
the escalator safety feature that prevents clothing and other things from being pulled down
between the step and the landing is called - correct answer ✔✔comb plate
in order to localize sound, what is the best position for loudspeaker placement - correct answer
✔✔central cluster
What is the main reason to include an elevator lobby - correct answer ✔✔to keep corridor clear
what do fibrous materials, panel resonators, and volume resonators so to sound - correct
answer ✔✔absorb
signals to loudspeakers situated more that_____ feet away from the sound source should be
delayed to ensure reinforcement arrives after the direct sound - correct answer ✔✔40
materials with an absorption coefficient > .20 are acoustically - correct answer ✔✔absorptive
