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This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Thermodynamics knowledge and support exam preparation. Choose a topic below to get started.
1. |
The cooling tower uses the phenomenon of evaporative cooling to cool warm water above the dbt of air. |
A. | true |
B. | false |
Answer» C. | |
2. |
In adiabatic evaporative cooling, heat transfer between chamber and surroundings is ____ |
A. | zero |
B. | high |
C. | low |
D. | none of the mentioned |
Answer» B. high | |
3. |
When air passes through silica gel, |
A. | it absorbs water vapour molecules |
B. | latent heat of condensation is released |
C. | dbt of air increases |
D. | all of the mentioned |
Answer» E. | |
4. |
THE_COOLING_TOWER_USES_THE_PHENOMENON_OF_EVAPORATIVE_COOLING_TO_COOL_WARM_WATER_ABOVE_THE_DBT_OF_AIR.?$ |
A. | true |
B. | false |
Answer» C. | |
5. |
IN_ADIABATIC_EVAPORATIVE_COOLING,_HEAT_TRANSFER_BETWEEN_CHAMBER_AND_SURROUNDINGS_IS_____?$ |
A. | zero |
B. | high |
C. | low |
D. | none of the mentioned |
Answer» B. high | |
6. |
Cooling towers are rated in terms of$ |
A. | approach |
B. | range |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» D. none of the mentioned | |
7. |
When air passes through silica gel? |
A. | it absorbs water vapour molecules |
B. | latent heat of condensation is released |
C. | dbt of air increases |
D. | all of the mentioned |
Answer» E. | |
8. |
Which of the following is an absorbent? |
A. | silica gel |
B. | activated alumina |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» D. none of the mentioned | |
9. |
Heating and humidification is done in |
A. | summer air conditioning |
B. | winter air conditioning |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» C. both of the mentioned | |
10. |
Cooling and dehumidification of air is done in summer air conditioning. |
A. | true |
B. | false |
Answer» B. false | |
11. |
Air can be cooled and dehumidified by |
A. | circulating chilled water in tube across air flow |
B. | placing evaporator coil across air flow |
C. | spraying chilled water to air |
D. | all of the mentioned |
Answer» E. | |
12. |
When humidity ratio of air ____ air is said to be dehumidified. |
A. | increases |
B. | decreases |
C. | remains constant |
D. | none of the mentioned |
Answer» C. remains constant | |
13. |
In sensible heating or cooling, |
A. | work done remains constant |
B. | dry bulb temperature or air remains constant |
C. | both of the mentioned |
D. | none of the mentioned |
Answer» B. dry bulb temperature or air remains constant | |