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REFRIGERATION AND AIR CONDITIONING

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

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
5 to 7 TR
0.1 to 0.3 TR
3 to 5 TR

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

Slightly above atmospheric pressure
56 bars
24 bars
Atmospheric pressure

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Refrigeration and Air Conditioning
In aircraft, air refrigeration Cycle is used because of

Higher coefficient of performance
Low weight per tonne of refrigeration
Low temperature at high altitudes
High heat transfer rate

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Refrigeration and Air Conditioning
Efficiency of a Carnot engine is given as 80%. If the cycle direction be reversed, what will be the value of C.O.P. of reversed Carnot Cycle?

0.25
0.8
1.25
0.5

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