Related Questions

The wet bulb temperature is lower in dry air than in wet air at the same temperature. A dry bulb thermometer registers a higher temperature than a wet bulb thermometer except at __________ percent relative humidity.
A 0
B 100
C 50
D None of these
Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.
A Molal
B Relative
C Percentage
D None of these
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)
A 25°C DBT and 100% RH
B 20°C DBT and 80% RH
C 22°C DBT and 60% RH
D 25°C DBT and 40% RH
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be
A Cooled and humidified
B Cooled and dehumidified
C Heated and humidified
D Heated and dehumidified
The percentage humidity is less than the relative humidity only at __________ percent humidity.
A Zero
B Hundred
C Both zero and hundred
D None of these
At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.
A 100
B 0
C 50
D Between 0 and 100
When water is sprayed on air, passing through an insulated chamber maintained at a temperature higher than the dew point of entering air but lower than its dry bulb temperature, then the air is
A Cooled and dehumified
B Heated and humidified
C Cooled and humidified
D Heated and dehumidified
The dew point of moist air becomes __________ with decrease in its relative humidity.
A Less than the wet bulb temperature
B More than the wet bulb temperature
C More than the dry bulb temperature
D Equal to wet bulb temperature
The difference between dry bulb temperature and wet bulb temperature, is called
A Dry bulb depression
B Wet bulb depression
C Dew point depression
D Degree of saturation
Dry bulb temperature of the gas is __________ the wet bulb temperature.
A Less than
B More than
C Equal to
D None of these

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