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

Related Mcqs:

1. At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is ________________ percent.?

   A. 100
   B. 0
   C. 50
   D. Between 0 and 100

2. 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?

   A. Molal
   B. Relative
   C. Percentage
   D. None of these

3. 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?

   A. Molal
   B. Relative
   C. Percentage
   D. None of these

4. The percentage humidity is less than the relative humidity only at __________________ percent humidity?

   A. Zero
   B. Hundred
   C. Both zero and hundred
   D. None of these

5. The dew point of an unsaturated gas-vapor mixture does not depend upon the _________________ of the mixture?

   A. Composition
   B. Temperature
   C. Total pressure
   D. All A, B. and C.

6. The dew point of an unsaturated gas-vapor mixture does not depend upon the ____________________ of the mixture?

   A. Composition
   B. Temperature
   C. Total pressure
   D. All A., B. and C.

7. With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature) ?

   A. Increases
   B. Remains unchanged
   C. Decreases
   D. Decreases linearly

8. If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is________________?

   A. 0.31
   B. 0.107
   C. 0.017
   D. 0.215

9. The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

   A. Reducing the total pressure
   B. Increasing the total pressure
   C. Reducing the temperature
   D. Both B. and C.

10. The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ______________ temperature?

    A. Dew point
    B. Wet bulb
    C. Dry bulb
    D. None of these