Related Questions

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
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
The temperature of water cooled in cooling tower is always __________ temperature of entering air.
A More than the wet bulb
B Less than the wet bulb
C Equal to the wet bulb
D Equal to the dry bulb
The minimum temperature to which water can be cooled in a cooling tower is
A Dew point temperature of air
B Wet bulb temperature of air
C Dry bulb temperature of air
D Ambient air temperature
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
A Molal flow rate of vapour
B Vapour molecular weight
C Pressure and temperature
D All of the above
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.
A 10-15
B 30-40
C 70-80
D 90-100
The term "cooling range" in a cooling tower refers to the difference in the temperature of
A Cold water leaving the tower and the wet bulb temperature of the surrounding air
B Hot water entering the tower and the wet bulb temperature of the surrounding air
C Hot water entering the tower and the cooled water leaving the tower
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
In self cooled motors the cooling time constant is about ______ than the heating time constant because cooling conditions are worse at standstill.
A 2 to 3 times greater
B 3 to 4 times greater
C 4 to 5 times greater
D none of the above
Can a cooling tower cool water below the wet bulb temperature of inlet air?
A Yes
B No
C Yes ; but height of cooling tower will be prohibitively high
D Yes ; but the air flow rate should be excessively high

Next steps