Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Related MCQs

• Humidity chart is useful for the solution of problems concerning condensation, vaporisation and air conditioning. At a given dry bulb temperature, value of humidity obtained from the humidity chart directly, is in terms of __________ humidity.
• The percentage humidity is less than the relative humidity only at __________ percent humidity.
• At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.
• Which of the following is directly concerned with Psychrometry?
• The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the
• When the __________ the relative humidity of air decreases, despite an increase in the absolute humidity.
• Critical humidity of a solid salt means the humidity
• An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is:
• The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature.
• With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature).