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Mechanical Engineering Objective Questions { Refrigeration and Air Conditioning }



218. Heat load of cooling tower is
A.Difference in temperature of hot water entering and cold water leaving
B.Difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of sorrounding air
C.Difference in temperature of the cold " water and atmospheric temperature
D.Amount of heat thrown away by the cooling tower in kcal/hr
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219. Approach of cooling tower means
A.Difference in temperature of hot water entering and cold water leaving
B.Difference in temperature of the cold water leaving the cooling tower and the wet bulb temperature of sorrounding air
C.Difference in temperature of the cold water and atmospheric temperature
D.Amount of heat thrown away by the cooling tower in kcal/hr
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220. Drift in cooling .tower refers to
A.Difference in temperature of hot water entering and cold water leaving
B.None of the above.
C.Difference in temperature of the cold water and atmospheric temperature
D.Amount of heat thrown away by the cooling tower in kcal/hr
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221. Drift loss in cooling tower is of the order of
A.1 to 5%
B.5 to 10%
C.10 to 20%
D.25 to 50%
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222. Water, by evaporative cooling, can theoretically be cooled down to
A.Atmospheric temperature
B.Air's dry bulb temperature
C.Air's wet bulb temperature
D.Air's dew point temperature
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223. Cooling range in case of cooling ponds and towers is the temperature difference between
A.Hot and cold water
B.Actual cold water and air's wet bulb
C.Actual cold water and air's dry bulb
D.Actual hot water and air's dry bulb
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224. Approach' in case of cooling ponds and towers is the temperature difference between
A.Hot and cold water actual cold water and air's wet bulb
B.(f) actual cold water and air's dry bulb
C.(g) actual hot water and air's dry bulb
D.(h) actual hot water and air's wet bulb.
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