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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

24 bars
Atmospheric pressure
56 bars
Slightly above atmospheric pressure

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Refrigeration and Air Conditioning
The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to

Yellow
Orange
Bright green
Red

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Refrigeration and Air Conditioning
The humidity ratio or specific humidity is the mass of water vapour present in

1 m3 of wet air
1 kg of wet air
1 kg of dry air
1 m3 of dry air

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Refrigeration and Air Conditioning
The alignment circle is marked on the psychrometric chart at

20°C DBT and 60% RH
26°C DBT and 60% RH
26°C DBT and 50% RH
20°C DBT and 50% RH

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Increases
Decreases
Remains constant
None of these

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

3
43834
4
43833

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MORE MCQ ON Refrigeration and Air Conditioning

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