Question 1

Ventilation arising from the temperature difference between outside and inside takes place due to ____________ effect.

Accepted Answer

A)  stack
B)  stark
C)  zeeman
D)  spark A

Question 2

For an echo to be distinguished as separate, it should reach the ear _________ of a second after the direct sound.

Accepted Answer

A)  one-fourth
B)  one-fifth
C)  one-eighth
D)  one-tenth D

Question 3

The intensity of sound depends on the ear of the listener.

Accepted Answer

A) True 
 B)False  False

Question 4

Concrete floor floating construction provides good insulation against __________ sounds.

Accepted Answer

A)  impact
B)  air-borne
C)  water-borne
D)  structural

Question 5

Which of the following statements is correct?

Accepted Answer

A)  pitch of the sound increases with increase in frequency
B)  pitch of the sound decreases with increase in frequency
C)  decibel is equal to 1/100 of bel
D)  increase in the amplitude of the sound decreases the intensity

Question 6

The ratio of the total floor area inclusive of all the floors to the area of the plot on which building stands is known as ___________

Accepted Answer

A)  groundage
B)  plot area
C)  floor area
D)  built-up area

Question 7

Which of the following relations between loudness and intensity is correct?

Accepted Answer

A)  i ? log l
B)  i ? log l2
C)  l ? log i
D)  l ? log i2

Question 8

The amount of sound transmitted outside a room depends on the surface while the amount of
sound reflected or absorbed depends on the sound insulation properties of the surface.

Accepted Answer

A) True 
 B)False

Question 9

The intensity of sound is proportional to __________ of amplitude.

Accepted Answer

A)  square root
B)  cube root
C)  square
D)  cube

Question 10

Reverberation time is independent of the shape of the room.

Accepted Answer

A) True 
 B)False

Question 11

Which of the following is not a characteristic of sound?

Accepted Answer

A)  intensity
B)  frequency
C)  speed
D)  quality

Question 12

The sound insulation offered by rigid homogenous walls decreases with the increase in the
thickness of the wall.

Accepted Answer

A) True 
 B)False

Question 13

The general temperature difference between inside and outside of a room is not more than ____________

Accepted Answer

A)  3°c
B)  5°c
C)  6°c
D)  8°c

Question 14

In rigid homogeneous walls, the transmission loss of a one-brick wall is _________

Accepted Answer

A)  10 db
B)  20 dbc.
C)  50 db
D)  70 db

Question 15

In cavity wall construction for soundproofing, the width of the cavity should be at least _________

Accepted Answer

A)  3 cm
B)  5 cm
C)  8 cm
D)  12 cm

Question 16

Hard materials used for sound insulation are good absorbers.

Accepted Answer

A) True 
 B)False

Question 17

Calculate the transmission loss given the sound levels measured on either side of the wall is 60 dB and 40 dB.

Accepted Answer

A)  20 db
B)  100 db
C)  60 db
D)  2400 db

Question 18

Which law states that the magnitude of a sensation is directly proportional to the logarithm of the physical stimulus producing it?

Accepted Answer

A)  beer-lambert law
B)  huygens-fresnel law
C)  lorentz law
D)  weber and fechner's law

Question 19

The absorption of a surface is the product of the __________ of the surface and its absorption coefficient.

Accepted Answer

A)  length
B)  area
C)  volume
D)  width

Question 20

The velocity of sound in bricks is __________

Accepted Answer

A)  1450 m/sec
B)  343 m/sec
C)  3000 m/sec
D)  4300 m/sec

Exam 1: Understanding Sound and Acoustics in Building Design

Ventilation arising from the temperature difference between outside and inside takes place due to ____________ effect.

For an echo to be distinguished as separate, it should reach the ear _________ of a second after the direct sound.

The intensity of sound depends on the ear of the listener.

Concrete floor floating construction provides good insulation against __________ sounds.

Which of the following statements is correct?

The ratio of the total floor area inclusive of all the floors to the area of the plot on which building stands is known as ___________

Which of the following relations between loudness and intensity is correct?

The amount of sound transmitted outside a room depends on the surface while the amount of sound reflected or absorbed depends on the sound insulation properties of the surface.

The intensity of sound is proportional to __________ of amplitude.

Reverberation time is independent of the shape of the room.

Which of the following is not a characteristic of sound?

The sound insulation offered by rigid homogenous walls decreases with the increase in the thickness of the wall.

The general temperature difference between inside and outside of a room is not more than ____________

In rigid homogeneous walls, the transmission loss of a one-brick wall is _________

In cavity wall construction for soundproofing, the width of the cavity should be at least _________

Hard materials used for sound insulation are good absorbers.

Calculate the transmission loss given the sound levels measured on either side of the wall is 60 dB and 40 dB.

Which law states that the magnitude of a sensation is directly proportional to the logarithm of the physical stimulus producing it?

The absorption of a surface is the product of the __________ of the surface and its absorption coefficient.

The velocity of sound in bricks is __________