Test: Properties of Moist Air - 1 - Mechanical Engineering MCQ

dry air

moist air

saturated air

specific humidity

wet bulb temperature

dry bulb temperature

dew point temperature

apparatus dew point

zero

0.5

0.75

1.0

mass of water vapour in a given volume to the total mass of the mixture of air and water vapour.

mass of water vapour in a given volume to the mass of water vapour, if air is saturated at the same temperature.

mass of water vapour in a given volume to the mass of air.

mass of air to the mass of water vapour in the mixture of air and water vapour.

dew point temperature of inlet air

wet bulb temperature of inlet air

water inlet temperature

water outlet temperature

decrease in fin spacing and increase in number of rows.

increase in fin spacing and increase in number of rows. .

increase in fin spacing and decrease in number of rows.

decrease in fin spacing and decrease in number of rows.

humidification

dehumidification

heating and humidification

cooling and dehumidification

which lies between the DBT and WBT stream.

which lies between the WBT and DPT of the incoming stream.

which is lower than the DPT of the incoming stream.

of adiabatic saturation of incoming stream.

wet bulb temperature and dew point temperature

wet bulb temperature and dry bulb temperature

adiabatic saturation temperature and dew point temperature

enthalpy and wet bulb temperature

condensation of moisture begins at the dew point.

upon cooling the saturated air, the moisture seperates out and the air becomes foggy and misty.

higher the relative humidity, larger will be the wet bulb depression.

regardless of temperature, the values of relative humidity and degree of saturation are identical for both the saturated and dry air.