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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

CO2
Freon-12
NH3
Freon-22

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Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

5 tons
10 tons
40 tons
0.1 ton

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Refrigeration and Air Conditioning
The leaks in a refrigeration system using Freon are detected by

Halide torch which on detection produces greenish flame lighting
Sulphur sticks which on detection gives white smoke
Smelling
Using reagents

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

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

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Refrigeration and Air Conditioning
The vertical and uniformly spaced lines on a psychrometric chart indicates

Dew point temperature
Wet bulb temperature
Dry bulb temperature
Specific humidity

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Refrigeration and Air Conditioning
The specific humidity during humidification process

Increases
Decreases
None of these
Remains constant

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MORE MCQ ON Refrigeration and Air Conditioning

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