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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The wet bulb temperature during sensible cooling of air

Remains constant
None of these
Increases
Decreases

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

21 kJ/ min
840 kJ/ min
210 kJ/ min
420 kJ/ min

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Water at 0°C
Mixture of ice and water under equilibrium conditions
Solid and dry ice
Ice at 4°C

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Saturated liquid
Dry saturated vapour
Superheated vapour
Wet vapour

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Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Ammonia
Carbon dioxide
Sulphur dioxide
Fluorine

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Refrigeration and Air Conditioning
In a vapour absorption refrigeration system, the compressor of the vapour compression system is replaced by

Generator
Liquid pump
Absorber and generator
Absorber, generator and liquid pump

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