List of top Food Engineering and Technology Questions on Psychrometrics

Match List-I with List-II.

List-IList-II
A. Humid heatI. kcal/kg
B. Humid volumeII. kg/kg
C. HumidityIII. m3/kg
D. EnthalpyIV. kcal/kg°C

Choose the correct answer from the options given below:

Consider the following statements about Psychrometry:
A. Dry bulb temperature indicates sensible heat
B. Wet bulb temperature reflects evaporative cooling
C. Relative humidity is independent of temperature
D. Humidity ratio is mass of vapour per mass of dry air
E. Dehumidification adds drying
Choose the correct answer from the options given below:
Humidification involves:
Moist air at $24^\circ$C dry bulb temperature and 45% relative humidity is heated to $75^\circ$C. The humidity is 0.009 kg/kg and enthalpy is 115 kcal/kg. Calculate the humid heat (kcal/kg/$^\circ$C).
The ratio of the vapour pressure on the aqueous solution to that of pure water at the same temperature is known as:
The ratio of mole fraction of water vapor in a given moist air sample to the mole fraction in an air sample saturated at the same temperature and pressure is known as
Saturated air has a relative humidity (RH) of

The topmost curve in the psychrometric chart represents the saturation line with  relative humidity.