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
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
A Condenser efficiency
B Vacuum efficiency
C Nozzle efficiency
D Boiler efficiency
Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.
A Wet bulb
B Dry bulb
C Saturation
D Dew point
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
During sensible cooling of air, its wet bulb temperature
A Decreases but dew point remains constant
B Increases but dew point remains constant
C Increases & the dew point decreases
D Decreases & the dew point increases
The wet bulb temperature during sensible cooling of air
A Remains constant
B Increases
C Decreases
D None of these
Noise produced by cooling fans (employed in air cooled heat exchangers or cooling tower) is mainly caused due to the turbulence created by blade passage through air. It can be reduced by use of a slower fan
A With greater number of blades
B Of increased diameter
C Both A & B
D Neither A nor B
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
In a cooling tower, water becomes cool by
A Loosing sensible heat
B Heat transfer to surroundings
C Vaporisation due to heat loss to air
D Loosing latent heat

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