A. Partial pressure of water vapour is less than the total pressure
B. Humidity is < 100% & dew point temperature of air has not reached
C. Dew point temperature of air has not reached & air is not saturated fully
D. Air is fully saturated
Related Mcqs:
- 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 - In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________?
A. Range is 15°F
B. Approach is 10°F
C. Both A. & B.
D. Neither A. nor B. - Moist air is cooled along the line of constant ________________ , when it is passed over a cold & dry cooling coil, such that no condensation occurs ?
A. Enthalpy
B. Relative humidity
C. Wet bulb temperature
D. Dew point temperature - When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively____________________?
A. Decreases & increases
B. Increases & increases
C. Increases & decreases
D. Decreases & decreases - At 100% relative humidity, the dew point temperature of moist air is_________________?
A. Less than the wet bulb temperature
B. More than the wet bulb temperature
C. Equal to the wet bulb temperature
D. Equal to the ambient temperature - Dew point temperature always gives an indication of the __________________ of the moist air ?
A. Dryness
B. Moisture content
C. Coolness
D. Latent heat - 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 minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?
A. Ambient
B. Dry bulb
C. Dew point
D. Wet bulb - Compressed dry air is used as the cutting fluid, while machining____________________?
A. Steel
B. Cast iron
C. Aluminium
D. None of these - Percentage of argon (by volume) in dry atmospheric air is about________________?
A. 0.09
B. 0.3
C. 0.57
D. 0.94
