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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
During a refrigeration cycle, heat is rejected by the refrigerant in a

Condenser
Compressor
Evaporator
Expansion valve

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Refrigeration and Air Conditioning
While designing the refrigeration system of an aircraft, the prime consideration is that the

System has high C.O.P.
Mass of the refrigeration equipment is low
Power per TR is low
Mass of refrigerant circulated in the system is low

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

There is no such consideration
More than or equal to 3.65 kg
More than 10 kg
Less than 2 kg

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Refrigeration and Air Conditioning
Critical temperature is the temperature above which

A gas will never liquefy
Water will never evaporate
A gas will immediately liquefy
Water will evaporate

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

O.P remains unaltered
Increases C.O.P
Other factors decide C.O.P
Decreases C.O.P

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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?

1.25
0.25
0.5
0.8

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