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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The dry bulb temperature during sensible heating of air

Remains constant
Decreases
None of these
Increases

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Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Degree of saturation
Dry bulb depression
Dew point depression
Wet bulb depression

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Refrigeration and Air Conditioning
The conditioned air supplied to the room must have the capacity to take up

Both room sensible heat and latent heat loads
Room sensible heat load only
None of the listed here
Room latent heat load only

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Refrigeration and Air Conditioning
The minimum temperature to which water can be cooled in a cooling tower is

Wet bulb temperature of air
Dew point temperature of air
Ambient air temperature
Dry bulb temperature of air

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Refrigeration and Air Conditioning
Ammonia is

Non-inflammable
Non-toxic
Toxic and non-inflammable
Highly toxic and inflammable

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

1.86 kW
7.44 kW
18.6 kW
3.72 kW

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