______________________ temperature remains constant during adiabatic saturation process of unsaturated air ?

Related Mcqs:

1. The heat of neutralisation remains constant, when there is a reaction between dilute solutions of strong _____________________?

   A. Base and strong acid
   B. Base and weak acid
   C. Acid and weak base
   D. None of these

2. If a solid is compressed adiabatically in its elastic range, its _____________ remains constant ?

   A. Internal energy
   B. Enthalpy
   C. Entropy
   D. Temperature

3. A thin, flat & square plate measuring 2 m × 2 m is freely hanging in ambient air at 25°C. It is exposed to the solar radiation falling on one side of the plate at the rate of 500 W/m2. The plate temperature will remain constant at 30°C, if the convective heat transfer co-efficient is ________________ W/m2 °C ?

   A. 50
   B. 100
   C. 150
   D. 200

4. When the wet steam is throttled but still remains wet at the exit of the throttle valve, then its temperature & dryness fraction respectively____________________?

   A. Decreases & increases
   B. Increases & increases
   C. Increases & decreases
   D. Decreases & decreases

5. For a spontaneous natural process at constant temperature and pressure, the free energy of the system always____________________?

   A. Increases
   B. Decreases
   C. Remain constant
   D. Increases to a maximum before decreasing

6. Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the ______________ temperature of air?

   A. Wet bulb
   B. Dry bulb
   C. Saturation
   D. Dew point

7. When dry bulb temperature & wet bulb temperature of moist air is the same, it means that the _________________?

   A. Partial pressure of water vapour is less than the total pressure
   B. Humidity is < 100% & dew point temperature of air has not reached
   C. Dew point temperature of air has not reached & air is not saturated fully
   D. Air is fully saturated

8. The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air?

   A. Ambient
   B. Dry bulb
   C. Dew point
   D. Wet bulb

9. During sensible cooling of air, its wet bulb temperature ?

   A. Decreases but dew point remains constant
   B. Increases but dew point remains constant
   C. Increases & the dew point decreases
   D. Decreases & the dew point increases

10. The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?

    A. T
    B. 1/T
    C. T2
    D. 1/T2