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Refrigeration and Air Conditioning

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?

0.8
0.25
0.5
1.25

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Refrigeration and Air Conditioning
In a domestic refrigerator, a capillary tube controls the flow of refrigerant from the

Condenser to the expansion valve
Condenser to the evaporator
Expansion valve to the evaporator
Evaporator to the thermostat

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Refrigeration and Air Conditioning
Most air cooled condensers are designed to operate with a temperature difference of

8°C
22°C
5°C
14°C

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Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Compressor
Condenser
Evaporator
Expansion valve

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Wet vapour region
None of the listed here
Superheated vapour region
Sub-cooled liquid region

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Saturated liquid
Superheated vapour
Dry saturated vapour
Wet vapour

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