MCQOPTIONS
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MCQOPTIONS
This section includes 14 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. |
According to Indian Standards, overall thermal transmittance of a wall should not be more than __________ kcal/m2 h deg C. |
| A. | 1.3 |
| B. | 2.2 |
| C. | 3.7 |
| D. | 4.6 |
| Answer» C. 3.7 | |
| 2. |
According to the Indian Standards, it is recommended that thermal damping of a wall should not be less than _______ |
| A. | 40% |
| B. | 50% |
| C. | 60% |
| D. | 80% |
| Answer» D. 80% | |
| 3. |
Presence of moisture in the thermal insulating material increases thermal insulation while the presence of air spaces decreases thermal insulation. |
| A. | True |
| B. | False |
| Answer» C. | |
| 4. |
Thermal insulation of roofs can be obtained by covering the top exposed surface of the roof with ________ |
| A. | 2.5 cm thick layer of mud mortar |
| B. | 2.5 cm thick layer of coconut pitch cement concrete |
| C. | 7.5 cm thick layer of mud mortar |
| D. | 7.5 m thick layer of coconut pitch cement concrete |
| Answer» C. 7.5 cm thick layer of mud mortar | |
| 5. |
Reflective sheet materials used as thermal insulating material have ___________ reflectivity and __________ emissivity. |
| A. | High, high |
| B. | High, low |
| C. | Low, low |
| D. | Low, high |
| Answer» C. Low, low | |
| 6. |
Which of the following is not a quality of a good thermal insulating material? |
| A. | It should be durable |
| B. | It should have a low thermal resistance |
| C. | It should be readily available |
| D. | It should be fireproof |
| Answer» C. It should be readily available | |
| 7. |
Which of the following is the correct relation between thermal transmittance and thermal time constant? |
| A. | T = Q x U |
| B. | T = k/U |
| C. | T = Q/U |
| D. | T = U/Q |
| Answer» D. T = U/Q | |
| 8. |
Thermal damping is given by the equation D = (T-t/T) x 100. Here, T denotes _________ |
| A. | Outside temperature range |
| B. | Inside temperature range |
| C. | Total outside and inside temperature range |
| D. | Thickness |
| Answer» B. Inside temperature range | |
| 9. |
Surface resistance is the reciprocal of __________ |
| A. | Surface coefficient |
| B. | Surface resistivity |
| C. | Surface conductance |
| D. | Surface conductivity |
| Answer» B. Surface resistivity | |
| 10. |
Which of the following is the correct relationship between thermal resistance and thermal conductivity? |
| A. | R = k/L |
| B. | R = k.L |
| C. | R = L/k |
| D. | R = L2/k |
| Answer» D. R = L2/k | |
| 11. |
The amount of heat flow through a unit area of material of unit thickness in one hour, when the temperature difference is maintained at 1°C is known as ___________ of the material. |
| A. | Thermal conductivity |
| B. | Thermal resistivity |
| C. | Thermal conductance |
| D. | Thermal resistance |
| Answer» B. Thermal resistivity | |
| 12. |
Thermal insulation keeps the room cool in winters and hot in summers. |
| A. | True |
| B. | False |
| Answer» C. | |
| 13. |
The process of direct transmission of heat through a material is known as __________ |
| A. | Conduction |
| B. | Radiation |
| C. | Thermal insulation |
| D. | Thermal energy |
| Answer» B. Radiation | |
| 14. |
According to Indian Standards, it is recommended that the overall thermal transmittance of a roof should not be more than _______ kcal/m2 h deg C. |
| A. | 2 |
| B. | 5.00 |
| C. | 7.00 |
| D. | 9.00 |
| Answer» B. 5.00 | |