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Chapter 13 ACOUSTICS OF BUILDING MCQs

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1. To control the echo in Audi auditorium following materials may be used





2. The unit of intensity of loudness is





3. Minimum distance between source of sound and obstruction for producing echo





4. Velocity of sound in air in meter/second





5. Sound travels in air in the form of





6. The amount of sound energy transmitted by fluctuations in air is known as





7. The frequency of vibrations is known as





8. Sound heard by reflection from a wall is called





9. The time for which the sound persists in a hall after the original is known as





10. The regions where no sound is heard in a hall are known as





11. The sound transmitted in air and progressed through air is known as





12. The broadcasting room should be





13. DB is abbreviation of





14. The points of low intensity of sound created by unsatisfactory hearing are called





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