A. Wet bulb temperature
B. Relative humidity
C. Partial pressure of vapour
D. Both B. and C.
Related Mcqs:
- During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the _________________ remains constant ?
A. Wet bulb temperature
B. Partial pressure of water vapor
C. Relative humidity
D. None of these - Which of the following decreases during evaporative cooling process with recirculated water supply ?
A. Wet bulb temperature
B. Relative humidity
C. Partial pressure of vapour
D. None of these - Which of the following remains constant during evaporative cooling process with recirculated water supply ?
A. Relative humidity
B. Partial pressure of vapour
C. Wet bulb temperature
D. None of these - Make up water is supplied during cooling tower operation to compensate for water losses due to______________________?
A. Evaporation
B. Blowdown
C. Entrainment
D. All A., B. & C. - The cooling effect in a cooling tower can be speeded up by _______________________?
A. Increasing the air velocity and area of exposed wet surface
B. Reducing the barometric pressure
C. Reducing the humidity of the air
D. All A., B. and C. - The cooling effect in a cooling tower cannot be increased by_____________________?
A. Increasing the air velocity over the wet surfaces
B. Reducing the humidity of entering air
C. Lowering the barometric pressure
D. None of these - 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 - At equilibrium the concentration of water in vapour phase (C*) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is_________________?
A. 0.0
B. 0.2
C. 0.4
D. 1.0 - Which of the following remains constant during sensible cooling process ?
A. Specific humidity
B. Partial pressure of vapour
C. Both A. and B.
D. Neither A. nor B. - During sensible cooling process ______________________?
A. Relative humidity decreases
B. Relative humidity increases
C. Wet bulb temperature decreases
D. Both B. and C.
