1) What is meant by Reverberant chamber?
a. Chambers having walls, ceiling and flooring acoustically reflected
b. Chambers having walls, ceiling and flooring covered by sound absorbing materials
c. Chambers having walls and ceiling made of different absorbing material
d. None of the above
|
Answer
Explanation
|
ANSWER: Chambers having walls, ceiling and flooring acoustically reflected
Explanation:
No explanation is available for this question!
|
|
2) Which of the following absorptive treatment can be used to cover the interior of a box to prevent the reverberant sound?
a. Open cell foam
b. Glass fiber mat
c. Both a. and b.
d. None of the above
|
Answer
Explanation
|
ANSWER: Both a. and b.
Explanation:
No explanation is available for this question!
|
|
3) The process of maintaining appropriate noise level without considering economic factors is called as _____
a. noise control
b. noise reduction
c. both a. and b.
d. none of the above
|
Answer
Explanation
|
ANSWER: noise reduction
Explanation:
No explanation is available for this question!
|
|
4) What are the adverse effects of noise on the organizations?
a. Compensation claims
b. Productivity
c. Both a. and b.
d. None of the above
|
Answer
Explanation
|
ANSWER: Both a. and b.
Explanation:
No explanation is available for this question!
|
|
5) Which instrument integrates sound pressure as a function of time over a period of time?
a. Noise dosimeter
b. FFT analyzer
c. Both a. and b.
d. None of the above
|
Answer
Explanation
|
ANSWER: Noise dosimeter
Explanation:
No explanation is available for this question!
|
|
6) What is the function of frequency analyzer?
a. It analysis noise signal in frequency domain into various frequency bands by magnetically separating the signal
b. It analysis noise signal in frequency domain into various frequency bands by electronically separating the signal
c. It analysis noise signal in frequency domain into various frequency bands by electromagnetically separating the signal
d. None of the above
|
Answer
Explanation
|
ANSWER: It analysis noise signal in frequency domain into various frequency bands by electronically separating the signal
Explanation:
No explanation is available for this question!
|
|
7) Which of the following methods can be used to control the noise level at source?
a. Changing design process
b. Using sound enclosures
c. Controlling vibration
d. All of the above
|
Answer
Explanation
|
ANSWER: All of the above
Explanation:
No explanation is available for this question!
|
|
8) Which type of earplugs contain silicon rubber and a fixing agent?
a. Semi insert protectors
b. Custom moulded earplugs
c. Pre-fabricated earplugs
d. Canal caps
|
Answer
Explanation
|
ANSWER: Custom moulded earplugs
Explanation:
No explanation is available for this question!
|
|
9) Which of the following construction equipments have highest noise level?
a. Compressors
b. Generators
c. Pneumatic wrenches
d. Pumps
|
Answer
Explanation
|
ANSWER: Pneumatic wrenches
Explanation:
No explanation is available for this question!
|
|
10) The noise level generated by domestic air conditioner ranges between _________
a. 38 dB to 70 dB
b. 35 dB to 52 dB
c. 62 dB to 88 dB
d. 50 dB to 60 dB
|
Answer
Explanation
|
ANSWER: 50 dB to 60 dB
Explanation:
No explanation is available for this question!
|
|
