MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Air Conditioning knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If wet-bulb depression is zero, then the relative humidity is also zero. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 2. |
What is the difference between DBT and WBT called? |
| A. | DPD |
| B. | DBD |
| C. | Degree of saturation |
| D. | WBD |
| Answer» E. | |
| 3. |
For unsaturated air, the value of DPT is _________ WBT. |
| A. | less than |
| B. | more than |
| C. | equal to |
| D. | much more than |
| Answer» B. more than | |
| 4. |
What is the temperature of air recorded by thermometer when it is not affected by the moisture present in it? |
| A. | WBT |
| B. | DBT |
| C. | DPT |
| D. | Sub-zero Temperature |
| Answer» C. DPT | |
| 5. |
What is the mixture of dry air and water vapor called when the air has diffused the maximum amount of water vapor into it? |
| A. | Dry air |
| B. | Moist air |
| C. | Saturated air |
| D. | Specific humidity |
| Answer» D. Specific humidity | |
| 6. |
What is the temperature of air recorded by a thermometer, when the moisture present in it starts condensing? |
| A. | DBT |
| B. | WBT |
| C. | DPT |
| D. | WBD |
| Answer» D. WBD | |
| 7. |
What is the ratio of actual mass of water vapor in a given volume of moist air to the mass of water vapor in the same volume of saturated air at the same pressure and temperature? |
| A. | Specific Humidity |
| B. | Relative humidity |
| C. | Degree of saturation |
| D. | Saturated air |
| Answer» C. Degree of saturation | |
| 8. |
What is the mass of water vapor present in 1 kg of dry air called? |
| A. | Specific Humidity |
| B. | Relative humidity |
| C. | Degree of saturation |
| D. | Saturated air |
| Answer» B. Relative humidity | |
| 9. |
What is the ratio of actual mass of water vapor in a unit mass of dry air to the mass of water vapor in the same mass of dry air when it is saturated at the same temperature? |
| A. | Moist air |
| B. | Dry air |
| C. | Degree of saturation |
| D. | Saturated air |
| Answer» D. Saturated air | |
| 10. |
The mixture of dry air and water vapor called when the air has diffused the maximum amount of water vapor into it is called ________ |
| A. | dry air |
| B. | moist air |
| C. | saturated air |
| D. | specific humidity |
| Answer» D. specific humidity | |
| 11. |
Specific humidity and absolute humidity have the same unit. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 12. |
Mixture of dry air and water vapor is __________ |
| A. | moist air |
| B. | dry air |
| C. | fresh air |
| D. | saturated air |
| Answer» B. dry air | |
| 13. |
Nitrogen and Argon have a major portion in the dry air. |
| A. | False |
| B. | True |
| Answer» B. True | |
| 14. |
Which of the following has the maximum contribution in the dry air? |
| A. | Nitrogen |
| B. | Argon |
| C. | Carbon dioxide |
| D. | Hydrogen |
| Answer» B. Argon | |
| 15. |
What is the mixture of a number of gases? |
| A. | Moist air |
| B. | Dry air |
| C. | Fresh air |
| D. | Saturated air |
| Answer» C. Fresh air | |