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

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes vapour
Above which liquid becomes gas
Above which liquid will remain liquid
Above which liquid becomes solid

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Refrigeration and Air Conditioning
The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P.

More
Less
Unpredictable
Equally

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Bell Coleman
Ericson
Carnot
Stirling

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

22°C DBT and 60% RH
25°C DBT and 100% RH
25°C DBT and 40% RH
20°C DBT and 80% RH

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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