MCQOPTIONS
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MCQOPTIONS
This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Building Construction knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following types of absorbents can absorb the sound of any frequency? |
| A. | Resonant panels |
| B. | Cavity resonators |
| C. | Porous materials |
| D. | Composite types |
| Answer» C. Porous materials | |
| 2. |
In which of the following absorbents, absorption takes place due to the frictional losses occurring due to the to and fro movement of the air contained in the material caused by the sound waves? |
| A. | Cavity resonators |
| B. | Resonant panels |
| C. | Porous materials |
| D. | Composite types |
| Answer» D. Composite types | |
| 3. |
The absorption of a surface is the product of the __________ of the surface and its absorption coefficient. |
| A. | Length |
| B. | Area |
| C. | Volume |
| D. | Width |
| Answer» C. Volume | |
| 4. |
The unit of absorption is ____________ |
| A. | Poise |
| B. | Stoke |
| C. | Siemens |
| D. | Sabin |
| Answer» E. | |
| 5. |
Rock wool comes under which of the following classifications of absorbents? |
| A. | Porous materials |
| B. | Resonant panels |
| C. | Cavity resonators |
| D. | Composite types |
| Answer» B. Resonant panels | |
| 6. |
In the Sabine s expression for reverberation time t=0.16V/A, A represents __________ |
| A. | Area of the room |
| B. | Volume of the room |
| C. | Total absorbing power |
| D. | Total adsorbing power |
| Answer» D. Total adsorbing power | |
| 7. |
Sound waves reflected at a convex surface are diminished. |
| A. | True |
| B. | False |
| Answer» C. | |
| 8. |
For an echo to be distinguished as separate, it should reach the ear _________ of a second after the direct sound. |
| A. | One-fourth |
| B. | One-fifth |
| C. | One-eighth |
| D. | One-tenth |
| Answer» E. | |