Acoustics interview questions
Acoustics interview questions
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Total Questions: 10
1. Elements of acoustic, except for?
Correct Answer is : Sound subdivision
2. The repetition of a sound produced by the "reflection of sound waves" from an obstructing surface, loud enough and received late enough to be perceived as distinct from the source?
Correct Answer is : Echo
3. The intensification and prolongation of sound produced by sympathetic vibration?
Correct Answer is : Resonance
4. A driving force in tune with the natural frequency?
Correct Answer is : Resonance
5. Unit of loudness level?
Correct Answer is : Phon
6. Standing waves are produced in 10m long stretched string. If the string vibrates in 5 segments and wave velocity is 20m/s, its frequency is
Correct Answer is : 5Hz
7. If vibrations of a string are to be increased by a factor 2, tension in the string must be made
Correct Answer is : Four times
8. The tension in the piano wire is 10N. What should be the tension in the wire to produce a note of double the frequency?
Correct Answer is : 40N
9. A string in a musical instrument is 50cm long and its fundamental frequency is 800Hz. If a frequency of 1000Hz is to be produced, then required length of string is
Correct Answer is : 40cm
10. The frequency of a tuning fork is 256. It will not resonate with a fork of frequency
Correct Answer is : 738
