Exam (elaborations)
Hearing Science CMSD3030 Final Review Questions with Correct Answers
- Course
- Institution
Hearing Science CMSD3030 Final Review Questions with Correct Answers
[Show more]
Content preview
Hearing Science CMSD3030 Final Review Questionswith Correct Answers
Acoustics is the branch of physics that deals with the study of Correct
Answer-sound
Assume that a pendulum is at rest in the neutral position. Once it starts
vibrating, ______ moves it from its maximum displacement in either
direction back to its resting position. Correct Answer-Elasticity
A pendulum is set into motion. It is observed that the amount of
displacement gradually decreases over time, and eventually the
pendulum comes to a standstill. What is this phenomenon called?
Correct Answer-Damping
The movement of an object from one point in space and back to the
same point is called Correct Answer-vibration
Once a vibrating object is set into motion, which of the following is
necessary to sustain vibration? Correct Answer-inertia and elasticity
What is represented on the horizontal axis of a waveform? Correct
Answer-time
Which of the following describes the word 'periodic'? Correct Answer-
predictable, regular pattern, perfectly repeatable over time
,Which of the following measures of amplitude represents the amplitude
of a wave at one given instant in time? Correct Answer-instantaneous
amplitude
What is the time period of a sound with a frequency of 100 Hz? Correct
Answer-0.01 seconds
A certain sound completes 50 cycles in 2 seconds. What is the frequent
of this sound? Correct Answer-25 Hz
Which of the following is the correct relationship between wavelength,
frequency, and speed of sound? Correct Answer-wavelength= speed of
sound/frequency
The speed of sound in air at normal temperatures and amplitude at sea
level is Correct Answer-340 meters/second
A the frequency of a sound changes, which of the following must also
change? Correct Answer-time period and wavelength
The movement of a point moving along the circumference of a unit
circle can be translated into a sine wave. Which of the following points
on the circle would correspond to an instantaneous phase of 180 degrees
on the sine wave? Correct Answer-half circle
An area with a relatively high concentration of air particles next to a
vibrating source is called a Correct Answer-condensation
,Which of the following is the best description of wavelength? Correct
Answer-the distance between one condensation and the very next
condensation
Which of the following is the best description of longitudinal
transmission? Correct Answer-individual particles in the medium move
in the same plane as the overall wave
The amount of force applied on a certain area is a measure of Correct
Answer-pressure
Which of the following is the most complete definition of sound
intensity in terms of power? Correct Answer-energy transmitted per unit
time per unit area
Which of the following is the minimum amount of sound power that a
normal hearing human being can detect? Correct Answer-10^-12 w/m^2
Which of the following is true? Correct Answer-I bel= 10 decibels
Solve log(16/10) Correct Answer-0.2
The wavelength of sounds A and B are 30 m and 300 m, respectively.
Which of the following statements must be true, assuming that sound is
, traveling within the same medium for both sounds? Correct Answer-A
has a higher frequency than B
When sound intensity is expressed in terms of dB intensity level, what is
the reference value used? Correct Answer-10-12w/m^2
What is the intensity in dB IL of a sound with an absolute power of 10-
2w/m^2? Correct Answer-100
Which of the following statements is true? Correct Answer-dB SPL=
20log(P1/20uPa)
What is the intensity in terms of dB SPL of a sound with an absolute
pressure of 2*106uPa? Correct Answer-100
What is the absolute power corresponding at 40 dB IL? Correct Answer-
10-8w/m^2
An environment without any reflections at all is called Correct Answer-
free field
What happens to sound power when the distance from the source to the
receiver increases by a factor of three? Correct Answer-it decreases by a
factor of nine
Which of the following statements is true? Correct Answer-P infinity /I
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
82977 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now