Top 50+ Solved Introduction to Air Conditioning Psychrometry MCQ Questions Answer
From 1 to 8 of 8
Q. .In a psychrometric chart, the vertical lines parallel to the ordinate indicate
a. Dry bulb Temperature
b. Wet bulb Temperature
c. Specific humidity
d. Enthalpy of saturation
Q. Which of the following statements are TRUE?
a. Thermodynamic WBT is a property of moist air, while WBT as measured by wet bulb thermometer is not a property
b. Both the thermodynamic WBT and WBT as measured by wet bulb thermometer are properties of moist air
c. Under no circumstances, dry bulb and wet bulb temperatures are equal
d. Wet bulb temperature is always lower than dry bulb temperature, but higher than dew point temperature
Q. Which of the following statements are TRUE?
a. During cooling and humidification process, the enthalpy of air decreases
b. During cooling and humidification process, the enthalpy of air increases
c. During cooling and humidification process, the enthalpy of air remains constant
d. During cooling and humidification process, the enthalpy of air may increase, decrease or remain constant depending upon the temperature of the wet surface
Q. An air stream at a flow rate of 1 kg/s and a DBT of 30 C mixes adiabatically with another air stream flowing with a mass flow rate of 2 kg/s and at a DBT of 15 C. Assuming no condensation to take place, the temperature of the mixture is approximately equal to:
a. 20 C
b. 22.5 C
c. 25 C
d. Cannot be found
Q. The temperature at which the water vapour in the air starts. condensing is known as
a. dew point
b. dry bulb
c. wet bulb
d. saturation
Q. When moisture is added to air at constant dry bulb temperature, the process is known as
a. Sensible cooling
b. humidification
c. dehumidification
d. Chilling
Q. Which of the following can be measured by a sling psychrometer?
a. Wet bulb temperature
b. Dry bulb as well as wet bulb temperatures
c. Specific humidity
d. Absolute humidity
- 1 (current)