__________________ of air does not increase with increase in temperature?

Related Mcqs:

1. Dew point temperature always gives an indication of the __________________ of the moist air ?

   A. Dryness
   B. Moisture content
   C. Coolness
   D. Latent heat

2. 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

3. 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

4. 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

5. The boiling & freezing points on a newly defined temperature scale in degree ‘D’ are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to _____________ °D ?

   A. 140
   B. 180
   C. 240
   D. 280

6. Heating the Hypo-eutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called_______________________?

   A. Tempering
   B. Hardening
   C. Annealing
   D. Normalising

7. 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

8. With increase in compression ratio, the volumetric efficiency of air compressor____________________?

   A. Increases
   B. Decreases
   C. Remain same
   D. May increase or decrease (depends on the suction pressure)

9. Air/fuel ratio by weight for combustion of methane with theoretical quantity of air will be about ____________________?

   A. 9 : 1
   B. 17 : 1
   C. 23 : 1
   D. 29 : 1

10. Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be________________?

    A. 9.5 : 1
    B. 12.5 : 1
    C. 15.5 : 1
    D. 18.5 : 1