Building Systems Final Exam questions
with verified solutions
The distance between the peak of one sound wave and the peak of the next is called: - correct answer
✔✔Wavelength - correct answer
Cycle
Frequency
Decibel
Which of the following is defined as the persistence of sound after the source of the sound has ceased,
as a result of repeated reflections - correct answer ✔✔Reverberation -c orrect answer
Attenuation
Diffraction
Diffusion
Which of the following describes the condition when sounds are reflected from a concave surface and
converge, greatly reinforced, at a single point? - correct answer ✔✔Focusing - correct answer
Standing waves
Creep
Flutter
Which of the following best describes the acoustic absorption of a material? - correct answer ✔✔It
decreases with the density of the material
Most materials absorb lower frequencies better than higher frequencies
It increases with the porosity of the material - correct answer
It increases with the material's ability to block air paths through the material?
Which of the following is the most sound-absorbent way to install acoustically absorbent materials -
correct answer ✔✔Suspend materials resiliently from a surface
, Attach materials directly to a surface
Hang large shapes of absorbant materials freely in the space - correct answer
Attach materials firmly to a surface with an airspace in between
Which of the following is a measure of the performance of a building material or construction assembly
in preventing transmission of airborne sound, when tested in laboratory? - correct answer ✔✔Noise
reduction (NR)
Sound Transmission Class (STC)
Impact Isolation Class (IIC)
Transmission Loss (TL) - correct answer
(T/F) Elevators can be designed as passenger or freight elevators or a combination of the two. Elevator
types, number, speed , size and load carrying capacity are dependent on the type of occupancy, amount
of people/objects to be carried , speed needed, and vertical distance to be traveled - correct answer
✔✔true
What is the most common type of arrangement for escalators? - correct answer ✔✔Separated Crisscross
Crisscross -- Correct Answer
Walk around crisscross
Spiral Crisscross
(T/F) According to ASME A17.1 there is a provision that allows for the use of benches in an elevator cab. -
correct answer ✔✔False
(T/F) Elevators might stop at each floor of a building or operate as a high speed express to specific upper
floors , these arrangements of low and high speed elevator groupings allow for more efficient
transporting in structures that 100 feet or less in height. - correct answer ✔✔False
(T/F) A small box freight elevator is also called a dumbwaiter. - correct answer ✔✔True
with verified solutions
The distance between the peak of one sound wave and the peak of the next is called: - correct answer
✔✔Wavelength - correct answer
Cycle
Frequency
Decibel
Which of the following is defined as the persistence of sound after the source of the sound has ceased,
as a result of repeated reflections - correct answer ✔✔Reverberation -c orrect answer
Attenuation
Diffraction
Diffusion
Which of the following describes the condition when sounds are reflected from a concave surface and
converge, greatly reinforced, at a single point? - correct answer ✔✔Focusing - correct answer
Standing waves
Creep
Flutter
Which of the following best describes the acoustic absorption of a material? - correct answer ✔✔It
decreases with the density of the material
Most materials absorb lower frequencies better than higher frequencies
It increases with the porosity of the material - correct answer
It increases with the material's ability to block air paths through the material?
Which of the following is the most sound-absorbent way to install acoustically absorbent materials -
correct answer ✔✔Suspend materials resiliently from a surface
, Attach materials directly to a surface
Hang large shapes of absorbant materials freely in the space - correct answer
Attach materials firmly to a surface with an airspace in between
Which of the following is a measure of the performance of a building material or construction assembly
in preventing transmission of airborne sound, when tested in laboratory? - correct answer ✔✔Noise
reduction (NR)
Sound Transmission Class (STC)
Impact Isolation Class (IIC)
Transmission Loss (TL) - correct answer
(T/F) Elevators can be designed as passenger or freight elevators or a combination of the two. Elevator
types, number, speed , size and load carrying capacity are dependent on the type of occupancy, amount
of people/objects to be carried , speed needed, and vertical distance to be traveled - correct answer
✔✔true
What is the most common type of arrangement for escalators? - correct answer ✔✔Separated Crisscross
Crisscross -- Correct Answer
Walk around crisscross
Spiral Crisscross
(T/F) According to ASME A17.1 there is a provision that allows for the use of benches in an elevator cab. -
correct answer ✔✔False
(T/F) Elevators might stop at each floor of a building or operate as a high speed express to specific upper
floors , these arrangements of low and high speed elevator groupings allow for more efficient
transporting in structures that 100 feet or less in height. - correct answer ✔✔False
(T/F) A small box freight elevator is also called a dumbwaiter. - correct answer ✔✔True
