A. 1
B. 1
D. ∞
Related Mcqs:
- For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because__________________?
A. Water has a high latent heat of evaporation
B. Lewis number is close to unity
C. They are always equal under all circumstances
D. Solubility of the components of air in water is very small - The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C ?
A. 25
B. > 25
C. < 25
D. – 25 - The wet and ‘dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be ______________ °C?
A. 25
B. > 25
C. < 25
D. – 25 - The difference of wet bulb temperature and adiabatic saturation temperature of unsaturated mixture of any system is___________________?
A. +ve
B. -ve
C. Zero
D. None of these - Wet bulb and dry bulb temperatures becomes identical at _______________ percent saturation curve?
A. 100
B. 50
C. 78
D. None of these - Dry bulb temperature of the gas is _____________ the wet bulb temperature?
A. Less than
B. More than
C. Equal to
D. None of these - Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and _________________?
A. Humidified with wet bulb temperature decreasing
B. Humidified at constant wet bulb temperature
C. Dehumidified
D. None of these - If the solubilities of different components (in a liquid-liquid extraction system) increase with rise in temperature, then the temperature above which they dissolve completely is known as the critical solution temperature (CST or consolute temperature). If solubilities increase with decrease in temperature, then CST is the temperature below which they dissolve completely. If a binary system has no critical solution temperature, it implies that___________________?
A. The system comprises of partially miscible liquids
B. The system comprises of miscible liquids
C. The system comprises of an azeotrope
D. On heating, a vapor phase will appear; while on cooling, a solid phase will appear - 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 - 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.
