| 1. | Conversion of acoustic energy to heat energy or another form of energy within the medium of sound-absorbing materials is called ________________. |
| | Absorption |
| | Adsorption |
| 2. | The most frequently encountered noise sources in a ducted air distribution system designed to deliver a constant volume of air are fans, control dampers, and air outlets such as diffusers, grilles, and registers. |
| | True |
| | False |
| 3. | What does SIL stand for? |
| | Speech Interference Levels |
| | Speed Interactive Level |
| | Speech Interference Load |
| | None of the above |
| 4. | Rain, mist, fog, hail, sleet, and snow are the various forms of _______________. |
| | Precipitation |
| | Temperature |
| 5. | Felt strips or pads are effective for reducing structure borne sound transmission in the mounting of piping and vibrating conduit. |
| |
| True |
| False |
| 6. | What does VAV stand for? |
| | Variable Air Valves |
| | Variety Air Valves |
| | Variable Agency Valves |
| | None of the above |
| 7. | Ten times the common logarithm to the base 10 of the ratio of the mean square sound pressure to the square of a reference pressure is called Sound Power Level. |
| | True |
| | False |
| 8. | ________________ is defined as the number of cycles occurring per second. |
| | Frequency |
| | Wavelength |
| 9. | The arithmetic average of several related sound levels (or SPL in a specified frequency band) measured at different positions or different times, or both are called Average Sound levels. |
| | True |
| | False |
| 10. | What does ASHRAE stand for? |
| | American Society of Heating, Refrigerating, and Air-Conditioning Engineers |
| | American Standard of Heating, Refining, and Air-Conditioning Engineers |
| | American Standard of Heating, Refrigerating, and Air-Conditioning Engineers |
| | None of the above |
| 11. | __________ is defined as a unit for expressing the relative power level difference between acoustical or electrical signals. |
| | Decibel |
| | Power |
| 12. | Field Sound Transmission is the ratio of the airborne sound power incident on the partition to the sound power transmitted by the partition. |
| | True |
| | False |
| 13. | What does ASTM stand for? |
| | American Society for Testing and Materials |
| | American Society for Transportation and Materials |
| | American Standard for Testing and Materials |
| | None of the above |
| 14. | ________________ is the ratio of sound energy absorbed by the acoustical material to that absorbed by a perfect absorptive material. |
| | Absorption coefficient |
| | Noise coefficient |
| 15. | What does FSTC stand for? |
| | Field Sound Transmission Class |
| | Field Standard Transmission Class |
| | Field Sound Testing Class |
| | None of the above |
| 16. | A range of frequencies whose upper band limit frequency is nominally twice the lower band limit frequency is called _______________. |
| | Octave Band |
| | Noise Frequency |
| 17. | What does HVAC stand for? |
| | Heating, Ventilation and Air Conditioning |
| | Heating, Variety and Air Conditioning |
| | Heavy, Ventilation and Air Conditioning |
| | None of the above |
| 18. | Sound Transmission Loss is a measure of sound insulation provided by a structural configuration. |
| | True |
| | False |
| 19. | A __________ is a solid structure that intercepts the direct sound path from a source to a receiver. |
| | Barrier |
| | Diffraction |
| 20. | What does figure 5-9 illustrate about?
(Refer Pg 5-12) |
| | Edge Effects at End of Barrier |
| | Approximate Noise Reduction of Typical Exterior Wall Constructions |
| | Sound Transmission |
| | None of the above |
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