Advanced Engineering Acoustics MCQs
Advanced Engineering Acoustics MCQs
Answer these 100+ Advanced Engineering Acoustics MCQs and assess your grip on the subject of Advanced Engineering Acoustics.
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1: What is an accelerometer?
A. A device that measures acceleration
B. A transducer whose output is directly proportional to acceleration.
C. A device that produces electric current in response to acceleration
D. A unit of measurement for acceleration
2: What does Absorption Coefficient (a) indicate?
A. How much sound is absorbed by the material
B. How loud the sound is
C. How much sound is transmitted by the material
D. How much sound is reflected by the material
3: What is an acoustic camera used for?
A. To measure sound
B. To take pictures
C. To identify and locate sound sources by visualizing the sound produced.
D. To listen to music
4: What is the science of mechanical waves that deals with the generation, transmission, and effects of waves including vibration, sound and ultrasound called?
A. Mathematics
B. Acoustics
C. Chemistry
D. Science
5: What is airborne sound?
A. Transmission of sound through medium other than air
B. Sound that arrives at the point of interest by transmission through air.
C. Sound that arrives at the point of interest without being transmitted
D. Sound that arrives at the point of interest by transmission through solid objects
6: What is Ambient Sound?
A. Music composed for a particular film or video game
B. The sound of waterfalls
C. Include only the sound source of interest
D. All sounds that exist in a particular area, from near and far, including the sound source of interest
7: What does ASTC stand for?
A. Audio Sound Transmission Class
B. Sound Transmission Class
C. Apparent Sound Transmission Rating
D. Apparent Sound Transmission Class
8: What does A-weighted Sound Level measure?
A. Broadband sound spectrum
B. Frequency of sound
C. Loudness of sound
D. Wavelength of sound
9: What does the A in dBA stand for?
A. Average
B. Absolute
C. A-weighted
D. Amplitude
10: What is the term for sounds from sources other than the sound source of interest?
A. Background sound
B. Reverberation
C. Sound shadowing
D. Sound diffraction
11: What does CAC stand for?
A. Cannot Acquire Contract
B. Ceiling Attenuation Class
C. Continuous Airspace Control
D. Cookie Allergy Class
12: What does the CNEL stand for?
A. Community Noise Exposure Level
B. Continuous Noise Equivalent Level
C. Community Noise Exposure Limit
D. Community Noise Equivalent Level
13: What is the characteristic of a mechanical system that gradually reduces the amplitude of vibration?
A. Damping
B. Friction
C. Inertia
D. Elasticity
14: What is the penalty for nighttime levels?
A. 15 dB
B. 5 dB
C. 20 dB
D. 10 dB
15: What is the unit of measurement for Daytime Equivalent Sound Level?
A. Pascal
B. Coulombs/meter3
C. Watts/meter2
D. Decibels (dB)
16: What is the acronym for Daytime Equivalent Sound Level?
A. DESL
B. DASL
C. Leq
D. ELSD
17: What is the main characteristic of a "dead" room?
A. It has many sound absorbing surfaces
B. It is very reverberant
C. It has a long reverberation time
D. It has a short reverberation time
18: What is a "dead" room?
A. A room with a long reverberation time.
B. A room with many sound reflecting surfaces.
C. A room that is not very reverberant.
D. A room with few sound absorbing surfaces
19: What is a decibel?
A. A measure of loudness
B. A unit of sound measurement
C. The speed of sound
D. A logarithmic unit of sound measurement
20: What does HVAC stand for?
A. Heating, ventilation, and air conditioning
B. High velocity air conditioning
C. Horizontal venting and air conditioning
D. High voltage alternating current
21: What does FHWA stand for?
A. Federal Highway Agreement
B. Federal Highway Administration
C. Federal Highway Association
D. Federal Highway Act
22: What is FIIC?
A. Field Impact Insulation Class
B. Frequency Induced Insulation Class
C. Fast Impulse Insulation Class
D. Field Induced Insulation Class
23: What does FSTC stand for?
A. Field Sound Transmission Class
B. Field Sound Transmission Classifier
C. Field Sound Transmission Code
D. Sound Transmission Class
24: What is a flanking path?
A. A direct sound transmission path that bypasses the primary wall or other barrier
B. The primary wall or other barrier itself
C. An indirect sound transmission path that bypasses the primary wall or other barrier
D. A structure borne path through the floor or ceiling
25: What does Hz stand for?
A. Hours
B. Henry
C. Hertz
D. Hectares
26: What is the unit used to express the number of cycles per second of a periodic wave?
A. Seconds (s)
B. Hertz (Hz)
C. Joules (J)
D. Farads (F)
27: What is the IIC?
A. Impact Insulator Class
B. Impulse Insulation Class
C. Impulse Insulator Class
D. Impact Insulation Class
28: Reduction in sound level at a given location due to the insertion of a noise control device is known as ________?
A. Reduction in Noise
B. Insertion Loss
C. Noise Control
D. Noise Cancellation
29: What is the Inverse Square Law?
A. The sound pressure varies inversely with the square of the distance from the source
B. The sound pressure decreases by 3 dB for each doubling of the distance from the source
C. Both of above
D. None of these
30: What is masking sound?
A. A sound that is natural
B. A sound that is wanted
C. A sound that is artificial
D. Sound that is introduced into an environment to cover up an unwanted sound
31: What does LMAX stand for?
A. Minimum Sound Level
B. Maximum Sound Level
C. Mean Sound Level
D. Maximum Speech Level
32: What does LMIN stand for?
A. Loudness Sound Level
B. Medium Sound Level
C. Maximum Sound Level
D. Minimum Sound Level
33: What does NEPA stand for?
A. National Environmental Policy Act
B. National Energy Policy Act
C. North East Protective Agency
D. National Economic Planning Authority
34: What does LEQ (night) stand for?
A. Level Effective Sounding Long
B. Nighttime Equivalent Sound Level
C. Low Equivalent Sounding
D. Loudness Equivalent Sound Level
35: What is noise?
A. Any unwanted or undesirable sound
B. A measure of loudness
C. A type of waves
D. A unit of sound intensity
36: What does NAC stand for?
A. Noise Abatement Committee
B. National Association of Counties
C. Noise Abatement Council
D. Noise Abatement Criteria
37: What is the purpose of a noise barrier?
A. To amplify noise
B. To reduce noise
C. To create a soundproof barrier
D. To protect sensitive areas from unwanted noise
38: What does NC stand for?
A. Natural Criterion
B. Noise Capacity
C. Noise Chart
D. Noise Criterion
39: What does NIC stand for?
A. Noise Insulation Class
B. Noise Isolation Class
C. Noise Inhalation Class
D. Noise Intoxication Class
40: What does a higher number in the noise reduction coefficient rating indicate?
A. No sound absorption
B. More sound absorption
C. Less sound absorption
D. Equal sound absorption
41: What is the term used for an area where noise interferes with the normal activities and uses of the area?
A. Restricted Use Area
B. Environmental Protection Area
C. Noise Sensitive Area
D. National Security Area
42: What is an octave band?
A. A frequency band that is one octave wide
B. The highest trombone note
C. A trombone slide position
D. A series of eight musical notes spanning an octave
43: What is one-third octave band?
A. A band of frequencies that are one-third of an octave apart
B. A band of frequencies that are one octave apart
C. A band of frequencies that are two octaves apart
D. A band of frequencies that are one-half of an octave apart
44: What is the L90?
A. The decibel level that is exceeded 95% of the time.
B. The decibel level that is exceeded 90% of the time.
C. The decibel level that is exceeded 80% of the time.
D. The decibel level that is exceeded 99% of the time
45: What is Pink Noise?
A. Random noise that contains equal noise energy in each octave band and each one-third octave band.
B. A feeling
C. A color
D. A type of rock music
46: What is STC?
A. Sound Transmission Capacity
B. Sound Transmission Count
C. Sound Transmission Component
D. Sound Transmission Class
47: What is Reverberation Time?
A. The time it takes for sound to decay by 90 decibels after the sound is stopped in the room.
B. The time it takes for sound to decay by 30 decibels after the sound is stopped in the room.
C. The time it takes for sound to increase by 60 decibels after the sound is stopped in the room.
D. The time it takes for sound to decay by 60 decibels after the sound is stopped in the room.
48: What is the name for random noise that contains equal noise energy in any fixed width frequency band?
A. White noise
B. Pink noise
C. Brown noise
D. Static noise
49: What is sound?
A. Oscillation of air pressure.
B. A male given name
C. Creation of art
D. A type of energy
50: What causes condensation?
A. No pressure
B. Equal pressure
C. Low pressure
D. High pressure
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