Make up water is supplied during cooling tower operation to compensate for water losses due to______________________?

Related Mcqs:

1. A natural draft cooling tower is filled with wooden grids, which covers about _________________ percent of the tower height?

   A. 10-15
   B. 30-40
   C. 70-80
   D. 90-100

2. The cooling effect in a cooling tower can be speeded up by _______________________?

   A. Increasing the air velocity and area of exposed wet surface
   B. Reducing the barometric pressure
   C. Reducing the humidity of the air
   D. All A., B. and C.

3. The cooling effect in a cooling tower cannot be increased by_____________________?

   A. Increasing the air velocity over the wet surfaces
   B. Reducing the humidity of entering air
   C. Lowering the barometric pressure
   D. None of these

4. The term “cooling range” in a cooling tower refers to the difference in the temperature of____________________?

   A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
   B. Hot water entering the tower and the wet bulb temperature of the surrounding air
   C. Hot water entering the tower and the cooled water leaving the tower
   D. None of these

5. Make up water is required in a cooling tower to replace the water lost by___________________?

   A. Evaporation
   B. Drift
   C. Blowdown and leakage
   D. All A., B. and C.

6. The temperature of water cooled in cooling tower is always _________________ temperature of entering air?

   A. More than the wet bulb
   B. Less than the wet bulb
   C. Equal to the wet bulb
   D. Equal to the dry bulb

7. Can a cooling tower cool water below the wet bulb temperature of inlet air ?

   A. Yes
   B. No
   C. Yes; but height of cooling tower will be prohibitively high
   D. Yes; but the air flow rate should be excessively high

8. In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the________________________?

   A. Range is 15°F
   B. Approach is 10°F
   C. Both A. & B.
   D. Neither A. nor B.

9. During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the _________________ remains constant ?

   A. Wet bulb temperature
   B. Partial pressure of water vapor
   C. Relative humidity
   D. None of these

10. At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid _______________ that in dry packed tower ?

    A. Is greater than
    B. Is lower than
    C. Is same as
    D. Cannot be predicted as data are insufficient