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Noise Control MCQ

1. What is TINNITUS?

Ringing in the ear or noise sensed in the head

Tinnitus only occurs in the elderly

Tinnitus is a curable condition

Tinnitus is not a real condition

Answer

Correct Answer: Ringing in the ear or noise sensed in the head

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2. TINNITUS may indicate a lesion of which system?

Auditory

Circulatory

Nervous

Digestive

Answer

Correct Answer: Auditory

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3. What is an attribute of auditory sensation that allows a subject to judge that two sounds similarly presented are dissimilar?

Dynamics

Timbre

Volume

Pitch

Answer

Correct Answer: Timbre

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4. What is the customarily expressed unit for the amount of threshold shift?

Seconds

Decibels

Hours

Minutes

Answer

Correct Answer: Decibels

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5. How is the amount of threshold shift customarily expressed?

In amplitude

In frequencies

In decibels

In cents

Answer

Correct Answer: In decibels

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6. The minimum sound pressure level of a sound outside the ear that will produce a transition from discomfort to definite pain is known as?

Absolute Threshold of Hearing

Mesosonic

Threshold of Pain

Hypersonic

Answer

Correct Answer: Threshold of Pain

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7. The minimum sound pressure level at which a person can hear a specified frequency of sound is known as?

Threshold of Recognizability

Threshold of Audibility

Threshold of Detectability

Threshold of Understanding

Answer

Correct Answer: Threshold of Audibility

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8. What is the ratio of the cutoff frequencies of a third-octave band?

2 to the one-third power

1 to the one-third power

8 to the one-third power

2 to the one-half power

Answer

Correct Answer: 2 to the one-third power

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9. What is TTS?

A temporary enhancement of hearing acuity as indicated by a change in the threshold of audibility.

A temporary impairment of hearing acuity as indicated by a change in the threshold of audibility.

A permanent impairment of hearing acuity as indicated by a change in the threshold of audibility.

An irreversible impairment of hearing acuity as indicated by a change in the threshold of audibility.

Answer

Correct Answer: A temporary impairment of hearing acuity as indicated by a change in the threshold of audibility.

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10. What is an oscillation in pressure called?

Wave

Sound

Vibration

Oscillation

Answer

Correct Answer: Sound

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11. What is the main cause of SOCIOCUSIS?

Physiological changes with age

Loss of hearing caused by noise exposures that are part of the social environment

Disease

Occupational-noise exposure

Answer

Correct Answer: Loss of hearing caused by noise exposures that are part of the social environment

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12. What is the unit of measurement for loudness?

PHON

BEL

SONE

DECIBEL

Answer

Correct Answer: SONE

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13. What is the loudness of a sound whose loudness level is 40 phons?

Ten sones

One sone

Four sones

Forty phons

Answer

Correct Answer: One sone

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14. What is the definition of "shielding"?

The attenuation of a sound, achieved by placing barriers between a sound source and the receiver

The amplification of a sound

The reception of a sound by a sound receiver

The emission of a sound from a sound source

Answer

Correct Answer: The attenuation of a sound, achieved by placing barriers between a sound source and the receiver

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15. What does SABIN measure?

The sound absorption of a surface

The sound reflection of a surface

The sound intensity of a surface

The sound transmission of a surface

Answer

Correct Answer: The sound absorption of a surface

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16. What is a resonator?

A device that resounds or vibrates in sympathy with a source of sound or vibration.

A device that amplifies sound

A device that produces sound

A device that absorbs sound

Answer

Correct Answer: A device that resounds or vibrates in sympathy with a source of sound or vibration.

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17. What is a device that resounds or vibrates in sympathy with a source of sound or vibration called?

Oscillator

Amplifier

Resonator

Transducer

Answer

Correct Answer: Resonator

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18. What is the "natural frequency of vibration" of an object?

The frequency of the source of sound

The Loudness of the sound

The duration of the vibration

The frequency at which the object vibrates most energetically

Answer

Correct Answer: The frequency at which the object vibrates most energetically

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19. What is REFRACTION?

The bending of a sound wave from its original path

The transfer of energy from one medium to another

The measure of the ability of a substance to speed up the movement of sound waves

The ability of a medium to cause sound waves to change direction

Answer

Correct Answer: The bending of a sound wave from its original path

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20. What is the return of a sound wave from a surface called?

Reflection

Reverb

Diffraction

Transmission

Answer

Correct Answer: Reflection

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21. What is the mathematical term for a noise whose instantaneous magnitude is not specified for any given instant of time?

Stationary noise

Random noise

Continuous noise

Intermittent noise

Answer

Correct Answer: Random noise

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22. RANDOM NOISE can be described statistically by what?

Random variables

Deterministic functions

Probability distribution functions

Periodic functions

Answer

Correct Answer: Probability distribution functions

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23. What is random noise?

A device that generates random noise

A type of interference that occurs in electronic systems

A measure of the variability of a signal

An oscillation whose instantaneous magnitude is not specified for any given instant of time.

Answer

Correct Answer: An oscillation whose instantaneous magnitude is not specified for any given instant of time.

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24. What attribute of auditory sensation orders sounds on a scale from low to high?

Volume

Pitch

Tone

Resonance

Answer

Correct Answer: Pitch

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25. What is the primary factor that determines pitch?

Frequency

Wave form

Volume

Sound pressure

Answer

Correct Answer: Frequency

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26. What does PINK NOISE mean?

Noise with increasing energy per octave bandwidth

Noise with constant energy per octave band width

Noise with decreasing energy per octave bandwidth

Noise with no specific energy per octave bandwidth

Answer

Correct Answer: Noise with constant energy per octave band width

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27. What is the unit of measurement for loudness level?

DECIBELS

WAVES

SOUND

PHON

Answer

Correct Answer: PHON

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28. What does PHON stand for?

Pulse helper on network

Protocol handler on network

The unit of measurement for loudness level

Pretty heavy on notation

Answer

Correct Answer: The unit of measurement for loudness level

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29. PTS stands for __________.

Poor Taste Society

People That Study

Permanent Threshold Shift

Peak Tattoo Society

Answer

Correct Answer: Permanent Threshold Shift

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30. What does PERIOD mean?

The highest point of a wave.

The duration of time it takes for a periodic wave form to repeat itself.

The number of complete wavelengths that fit into one unit of length.

The distance from one peak of a wave to the next

Answer

Correct Answer: The duration of time it takes for a periodic wave form to repeat itself.

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31. What does PERIOD refer to?

The distance from one crest to the next crest of a wave

The duration of time it takes for a periodic wave form to repeat itself

The duration of one complete vibration of a particle

The highest point reached by a wave

Answer

Correct Answer: The duration of time it takes for a periodic wave form to repeat itself

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32. What is the peak sound pressure?

The minimum absolute value of the instantaneous sound pressure in a specific time interval

The maximum sound pressure

The average sound pressure over time

The maximum absolute value of the instantaneous sound pressure in a specific time interval

Answer

Correct Answer: The maximum absolute value of the instantaneous sound pressure in a specific time interval

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33. What is the maximum absolute value of the instantaneous sound pressure in a specific time interval called?

Wave sound pressure

Time sound pressure

Peak sound pressure

Maximum sound pressure

Answer

Correct Answer: Peak sound pressure

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34. What does OSHA stand for?

Occupational Safety and Health Agency

Occupational Security and Health Administration

Occupational Safety and Hazard Administration

Occupational Safety and Health Administration

Answer

Correct Answer: Occupational Safety and Health Administration

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35. What is OSCILLATION?

The action of a seesaw

The variation with time, alternately increasing and decreasing, of a feature of a sound or a solid object.

A wave-like motion

The movement of a pendulum

Answer

Correct Answer: The variation with time, alternately increasing and decreasing, of a feature of a sound or a solid object.

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36. What is the integrated sound pressure level of only those sine-wave components in a specified octave band called?

OCTAVE BAND LEVEL

Soundwaves in an octave

Octave division

Octave range

Answer

Correct Answer: OCTAVE BAND LEVEL

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37. What is an octave band level?

The level of noise in a octave band.

A measure of the sound pressure exerted on a unit surface by a sound wave

The ratio of the sound pressure of a particular tone to a reference tone

The integrated sound pressure level of only those sine-wave components in a specified octave band.

Answer

Correct Answer: The integrated sound pressure level of only those sine-wave components in a specified octave band.

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38. What is an octave band?

A segment of the frequency spectrum separated by a fifth.

A segment of the frequency spectrum separated by an octave.

The highest note on a piano.

The lowest note on a piano.

Answer

Correct Answer: A segment of the frequency spectrum separated by an octave.

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39. What does an octave band separate?

The loudness of a sound

The average human ear can hear frequencies

A segment of the frequency spectrum

The pitch of a sound

Answer

Correct Answer: A segment of the frequency spectrum

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40. What is the interval between two sounds having a frequency ratio of two called?

Semi-tone

Scale

Octave

Tone

Answer

Correct Answer: Octave

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41. There are _____ octaves on the keyboard of a standard piano.

Answer

Correct Answer: 8

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42. What is the NR?

The numerical difference of the average sound pressure levels in two areas or rooms.

The sound pressure levels in two areas or rooms.

The numerical difference, in decibels, of the average sound pressure levels in two areas or rooms.

The average sound pressure levels in two areas or rooms.

Answer

Correct Answer: The numerical difference, in decibels, of the average sound pressure levels in two areas or rooms.

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43. What is the numerical difference, in decibels, of the average sound pressure levels in two areas or rooms called?

Noise Reduction

Sound Transmission Loss

Acoustic Absorption

Sound Pressure Levels

Answer

Correct Answer: Noise Reduction

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44. What does A-weighted sound level refer to?

The weight of the sound

Sound coming from a weight

A measuring unit for sound

Airborne sound

Answer

Correct Answer: Airborne sound

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45. What is the full form of "NIC"?

Noise Isolation Capacity

Noise Isolated Control

Noise Isolation Commissioning

Noise Isolation Class

Answer

Correct Answer: Noise Isolation Class

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46. What is the definition of noise?

Sound that occurs in the natural environment

A method of communication

Sound that is not wanted

Unwanted sound

Answer

Correct Answer: Unwanted sound

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47. What does NIOSH stand for?

North Carolina Industrial Safety Office

National Inclusive of Safety and Health

National Institute for Occupational Safety and Health

Norfolk Institute of Safety and Health

Answer

Correct Answer: National Institute for Occupational Safety and Health

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48. What is the sound field very near to a source called?

Medium Field

Short Field

Long Field

Near Field

Answer

Correct Answer: Near Field

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49. What is a medium?

A device used to measure sound waves.

A substance carrying a sound wave.

The study of music.

The highest frequency a medium can carry.

Answer

Correct Answer: A substance carrying a sound wave.

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50. What does the term "masking noise" refer to?

A noise thatrender inaudible or unintelligible another sound that is also present.

Nobody really knows

A noise that is not intense enough to render inaudible or unintelligible another sound that is also present.

A noise that is intense enough to render inaudible or unintelligible another sound that is also present.

Answer

Correct Answer: A noise that is intense enough to render inaudible or unintelligible another sound that is also present.

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51. What is the process by which the threshold of audibility for a sound is raised by the presence of another (masking) sound?

The process by which the threshold of audibility for a sound is lowered by the presence of another (masking) sound.

The amount by which the threshold of audibility of a sound is lowered by the presence of another (masking) sound.

MASKING

Answer

Correct Answer: MASKING

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52. LOUDNESS LEVEL is measured in what?

Decibels

Pascal

Phons

Kilopascal

Answer

Correct Answer: Phons

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53. LOUDNESS LEVEL is numerically equal to the median sound pressure level of what?

A light waves

A free progressive 1000 Hz wave

A sound produced by a loud object

A soft noise

Answer

Correct Answer: A free progressive 1000 Hz wave

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54. Over much of the frequency range, how much increase in sound pressure is required to produce a doubling of loudness?

3 dB

20 dB

5 dB

10 dB

Answer

Correct Answer: 10 dB

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55. What is the definition of a logarithm?

A number that indicates the power to which a base must be raised to produce a given number.

The number that indicates the power to which a base must be raised to produce a given number.

The exponent that indicates the power to which a base must be raised to produce a given number.

The exponent that indicates the power to which a number must be raised to produce a given number.

Answer

Correct Answer: The exponent that indicates the power to which a number must be raised to produce a given number.

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56. What is the number that indicates the power to which a number must be raised to produce a given number called?

Percentage

Log

Logarithm

Exponent

Answer

Correct Answer: Logarithm

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57. What is a level?

A measure of the slant of a surface

The degree to which a liquid resists flowing

The logarithm of the ratio of a quantity to a reference quantity of the same kind.

A measure of the intensity of sound

Answer

Correct Answer: The logarithm of the ratio of a quantity to a reference quantity of the same kind.

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58. What is the logarithm of the ratio of a quantity to a reference quantity of the same kind called?

Quantity

Level

Kind

Reference quantity

Answer

Correct Answer: Level

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59. What does ISO stand for?

International Organization for Science

International Organization for Standardization

International Organization for Security

International Organization for Solutions

Answer

Correct Answer: International Organization for Standardization

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60. What is the correct term for the acoustic wave behavior described in the INVERSE SQUARE LAW?

None of the above.

The sound pressure level decreases 6 dB with each doubling of distance from the source.

The mean-square pressure varies inversely with the square of the distance from the source.

The mean-square pressure varies directly with the square of the distance from the source.

Answer

Correct Answer: The mean-square pressure varies inversely with the square of the distance from the source.

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61. What is intensity?

The amount of sound that is reflected

The amount of sound energy produced by a source

The sound energy flow through a unit area in a unit time.

The loudness of a sound

Answer

Correct Answer: The sound energy flow through a unit area in a unit time.

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62. What is the name for sounds of a frequency lower than 20 hertz?

Infrasonic

Supersonic

Ultrasonic

Hypersonic

Answer

Correct Answer: Infrasonic

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63. What is the significance of 20 hertz?

It is the lowest frequency that humans can hear.

Sounds of a frequency lower than 20 hertz are infrasonic.

The speed of sound in air is approximately 343 m/s.

INFRASONIC is an acronym for the National Fillers Refuse Society.

Answer

Correct Answer: It is the lowest frequency that humans can hear.

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64. What is the sound produced by the collision of two solid objects called?

Noise

Reverb

Echo

Impact sound

Answer

Correct Answer: Impact sound

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65. What does a single-figure rating in the IMPACT INSULATION CLASS measure?

The weight of the floor-ceiling assemblies

The impact sound insulating capabilities of floor-ceiling assemblies

The ability of the floor-ceiling assemblies to resist impact

The size of the floor-ceiling assemblies

Answer

Correct Answer: The impact sound insulating capabilities of floor-ceiling assemblies

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66. What is the impact sound insulating capabilities of floor-ceiling assemblies?

Wiccopee International

IMPACT INSULATION CLASS (IC)

Institute of Noise Control Engineering

International Organization for Standardization

Answer

Correct Answer: IMPACT INSULATION CLASS (IC)

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67. What does the acronym "Hz" stand for?

Henry

Histoire

Hertz

High

Answer

Correct Answer: Hertz

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68. The HTL is the amount in decibels by which an individual's threshold of audibility differs from what?

A standard audiometric threshold.

The sound of a pin drop

Their loudest volume

The average person's threshold

Answer

Correct Answer: A standard audiometric threshold.

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69. The HTL is the ____?

The least amount of decibels needed to hear a sound.

Amount by which an individual's threshold of audibility differs from a standard audiometric threshold.

The highest amount of decibels needed to hear a sound.

The average amount of decibels needed to hear a sound.

Answer

Correct Answer: Amount by which an individual's threshold of audibility differs from a standard audiometric threshold.

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70. What is the term denoting an impairment of auditory acuity?

Cochlear hearing loss

Articulation disorder

Sensorineural hearing loss

Hearing loss

Answer

Correct Answer: Hearing loss

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71. What is hearing loss?

A sensor-neural loss originating in the cochlea

An impairment of auditory acuity

A decibel loss of hearing at specified frequencies

A loss of hearing due to noise

Answer

Correct Answer: An impairment of auditory acuity

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72. Hearing level is measured in what?

Seconds

Decibels

Intensity

Time

Answer

Correct Answer: Decibels

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73. What is hearing?

The study of acoustics

The subjective human response to sound

The study of ears

A physical response to sound

Answer

Correct Answer: The subjective human response to sound

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74. What is a harmonic?

A sinusoidal component whose frequency is double that of the fundamental frequency of the wave

A sinusoidal component whose frequency is a whole-number multiple of the fundamental frequency of the wave

A sinusoidal component whose frequency is not a whole-number multiple of the fundamental frequency of the wave

Answer

Correct Answer: A sinusoidal component whose frequency is a whole-number multiple of the fundamental frequency of the wave

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75. What is the second harmonic called?

A sinusoidal component whose frequency is triple the fundamental frequency.

A sinusoidal component whose frequency is half the fundamental frequency.

A sinusoidal component whose frequency is the same as the fundamental frequency.

A sinusoidal component whose frequency is double the fundamental frequency.

Answer

Correct Answer: A sinusoidal component whose frequency is double the fundamental frequency.

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76. What is the function of hair cells?

Interneurons in the cochlea which transform the mechanical energy of sound into nerve impulses.

Motor neurons in the cochlea which transform the mechanical energy of sound into nerve impulses.

Sensory cells in the cochlea which transform the mechanical energy of sound into nerve impulses.

Sensory cells in the cochlea which transform the electrical energy of sound into nerve impulses.

Answer

Correct Answer: Sensory cells in the cochlea which transform the mechanical energy of sound into nerve impulses.

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77. What is a sound field in which the effects of obstacles or boundaries on sound propagated in that field are negligible called?

Open Sound Field

Free Sound Field

Reflection Sound Field

Echo Sound Field

Answer

Correct Answer: Free Sound Field

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78. What is the definition of a free sound field?

A sound field in which the effects of obstacles or boundaries on sound propagated in that field are not negligible.

A sound field in which the effects of obstacles or boundaries on sound propagated in that field are nonexistent.

A sound field in which the effects of obstacles or boundaries on sound propagated in that field are minimal.

A sound field in which the effects of obstacles or boundaries on sound propagated in that field are negligible.

Answer

Correct Answer: A sound field in which the effects of obstacles or boundaries on sound propagated in that field are negligible.

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79. What is the main purpose of a Filter?

To separate components of a signal on the basis of their frequency

To allow components in one or more frequency bands to pass relatively unattenuated

To attenuate components in other frequency bands

Answer

Correct Answer: To separate components of a signal on the basis of their frequency

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80. What is the "inverse-square law"?

The sound pressure level decreases 12 dB with each doubling of distance from the source

The sound pressure level decreases 6 dB with each doubling of distance from the source

The sound pressure level increases 6 dB with each doubling of distance from the source

The sound pressure level is halved with each doubling of distance from the source.

Answer

Correct Answer: The sound pressure level decreases 6 dB with each doubling of distance from the source

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81. What does "Leq" stand for?

Lowest energy quotient

Equivalent A-weighted sound level

Loudness equivalent proposal

Level of energy noise

Answer

Correct Answer: Equivalent A-weighted sound level

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82. What does the acronym "ECHO" stand for?

Elephant Call Heard Overseas

Every Cat Has an Outer lining

Easy Cycling for Healthier Oceans

Electronic Countermeasures and Homing Operations

Answer

Correct Answer: Electronic Countermeasures and Homing Operations

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83. Apparent downward shift in frequency of a sound is called ________.

FREQUENCY SHIFT

DOPPLER SHIFT

DOPPER EFFECT

PITCH SHIFT

Answer

Correct Answer: DOPPLER SHIFT

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84. What is the space-average sound pressure level of a given source?

The sound pressure level produced by the source in a given direction measured at the same distance

The average of the sound pressure levels produced by the source in all directions

The sound pressure level produced by the source in a given direction

Answer

Correct Answer: The average of the sound pressure levels produced by the source in all directions

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85. What is diffraction?

A modification which soundwaves undergo in passing by the edges of solid bodies.

The study of how sound waves interact with their environment.

The process of making sound waves

A device used to measure sound waves

Answer

Correct Answer: A modification which soundwaves undergo in passing by the edges of solid bodies.

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86. What does the abbreviation "dB" stand for?

Data Byte

Density Bonus

Decimal Byte

Decibel

Answer

Correct Answer: Decibel

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87. What is the term used for the attenuation of sound in a structure?

Damping

Scattering

Reflection

Diffraction

Answer

Correct Answer: Damping

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88. What is the meaning of "damping"?

The addition of sound-dissipative materials

The attenuation of sound in a structure

The dissipation of energy with time or distance

The amplification of sound in a structure

Answer

Correct Answer: The dissipation of energy with time or distance

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89. What is a cylindrical wave?

A wave in which the surfaces of constant phase are diverging spheres.

A wave in which the surfaces of constant phase are converging spheres.

A wave in which the surfaces of constant phase are parallel planes.

A wave in which the surfaces of constant phase are coaxial cylinders.

Answer

Correct Answer: A wave in which the surfaces of constant phase are coaxial cylinders.

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90. What are the surfaces of constant phase in a cylindrical wave?

Intersecting planes

Perpendicular planes

Parallel planes

Coaxial cylinders

Answer

Correct Answer: Coaxial cylinders

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91. What is the SI unit of frequency?

Hertz

Faradays

Seconds

Joules

Answer

Correct Answer: Hertz

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92. What does CYCLES PER SECOND measure?

Wavelength

Speed

Frequency

Amplitude

Answer

Correct Answer: Frequency

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93. What is the definition of 'cycle'?

The complete sequence of values of a periodic quantity that occurs during one period.

A combination of two or more things that create a reinforcing effect

The path of an object around a point, especially a planet or star

A series of events that happens again and again in the same order

Answer

Correct Answer: The complete sequence of values of a periodic quantity that occurs during one period.

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94. What are the frequencies that mark the ends of a band called?

Crossover frequencies

Limit frequencies

Break frequencies

Cutoff frequencies

Answer

Correct Answer: Cutoff frequencies

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95. What is the cochlea?

The capital of Belgium

A river in Africa

An island in Greece

A spirally coiled organ located within the inner ear which contains the receptor organs essential to hearing.

Answer

Correct Answer: A spirally coiled organ located within the inner ear which contains the receptor organs essential to hearing.

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96. What is a calibrator?

A device which muffles sound.

A device which produces a known sound pressure on the microphone of a sound level measurement system.

A device which amplifies sound.

A device which creates sound.

Answer

Correct Answer: A device which produces a known sound pressure on the microphone of a sound level measurement system.

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97. What is BROADBAND NOISE?

A device that broadens the bandwidth of a signal

Noise with components over a wide range of frequencies

A term used in electrical engineering

Noise with components over a narrow range of frequencies

Answer

Correct Answer: Noise with components over a wide range of frequencies

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98. What is the lower cutoff frequency of a band pass filter?

Less than zero

Greater than zero

Finite upper cutoff frequency

Equal to zero

Answer

Correct Answer: Greater than zero

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99. What does BAND stand for?

Balanced Audio Network Design

Berlin Area Network of Devices

Broadcast Audio Newscast Digital

Any segment of the frequency spectrum.

Answer

Correct Answer: Any segment of the frequency spectrum.

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100. What is the meaning of the term "background noise"?

The total of all noise in a system or situation, independent of the presence of the desired signal.

The noise in the environment, other than the noise from the source of interest.

The total of all noise in the environment.

The noise in the measurement system.

Answer

Correct Answer: The total of all noise in a system or situation, independent of the presence of the desired signal.

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101. What is the total of all noise in a system or situation, independent of the presence of the desired signal called?

Electrical noise

Source of interest

Noise in the environment

Background noise

Answer

Correct Answer: Background noise

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102. What is the range of the AI?

Between 0 and 1.0

-1 to 1

1-10

0-100

Answer

Correct Answer: Between 0 and 1.0

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103. What is the range of the articulation index?

1.0 to 6.0

0 to 1.0

-1.0 to 1.0

0 to 10

Answer

Correct Answer: 0 to 1.0

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104. What does the acronym "ANSI" stand for?

American Native Species Initiative

American National Security Initiative

The American National Standards Institute

American National Society of Interpreters

Answer

Correct Answer: The American National Standards Institute

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105. What does ANSI stand for?

American National Society of Interpreters

American Nurses Syndicate International

American National Standards Institute

Association of National Stenographers and Interpreters

Answer

Correct Answer: American National Standards Institute

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106. What is the main purpose of an anechoic room?

To create free field conditions

To create Echo

To reflect sound

To absorb sound

Answer

Correct Answer: To create free field conditions

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107. What is the total of all noise in the environment called?

Noise Abatement

Ambient Noise

Soundproofing

International Noise

Answer

Correct Answer: Ambient Noise

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108. What is AIRBORNE SOUND?

Sound that is too loud

Sound that reaches the point of interest by propagation through air.

Quiet sound

Sound that is not directional

Answer

Correct Answer: Sound that reaches the point of interest by propagation through air.

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109. What does the term "acoustic trauma" usually imply?

A single traumatic event

Long-term exposure to loud noise

Gradual hearing loss caused by aging

Hearing loss caused by disease

Answer

Correct Answer: A single traumatic event

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110. What is the science of sound called?

Acoustics

Logarithms

Amplitude

Sine

Answer

Correct Answer: Acoustics

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111. What does absorption do to sound energy?

Destroys sound energy

Produces sound energy

Reduces the amount of sound energy reflected

Increases the amount of sound energy reflected

Answer

Correct Answer: Reduces the amount of sound energy reflected

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Acoustical Engineering MCQs | Topic-wise

MCQ on Acoustic modelling software	MCQ on Acoustical Modeling
MCQ on Acoustical and Audio Measurements	MCQ on Acoustics Design Practicum
MCQ on Architectural Acoustics	MCQ on Audio Visual System Design
MCQ on Basic Acoustical Engineering	MCQ on Basic Audiology
MCQ on Ear Anatomy	MCQ on Electroacoustics
MCQ on Environmental Acoustics	MCQ on Measurement of Noise
MCQ on Microphones	MCQ on Musical Acoustics
MCQ on Noise & Vibration Control	MCQ on Noise Control
MCQ on Psychoacoustics	MCQ on Sound Insulation
General Acoustical Engineering MCQs