11- The maximum amount of moisture air can hold depends upon its temperature and barometric pressure. True False
12- When the dry bulb temperature is equal to dew point temperature, the relative humidity of air-water mixture is 1.0. True False
13- Wet bulb temperature is always lower than dry bulb temperature, but higher than dew point temperature. True False
14- During sensible cooling of air, dry bulb temperature decreases but wet bulb temperature remains constant. True False
15- Sensible heat factor is low for air conditioning plants operating in humid climates. True False
16- During cooling and humidification process, the enthalpy of air may increase, decrease or remain constant depending upon the temperature of the wet surface. True False
17- Relative humidity is defined as the ratio of the partial pressure of water vapor in the moist air at a certain temperature to the partial pressure of vapor of saturated air at the same temperature. True False
18- Psychrometric chart could be used to obtain thermodynamic properties of refrigerants at standard atmospheric pressure only. True False
19- The purpose of a humidifier is to reduce the moisture in the air. True False
20- When the enthalpy of air is equal to the enthalpy of saturated air at the wetted surface temperature, then there is no net heat transfer between air and the wetted surface. True False