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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?

1.25
0.5
0.25
0.8

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

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

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Condenser and expansion valve
Compressor and evaporator
Compressor and condenser
Expansion valve and evaporator

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Refrigeration and Air Conditioning
The higher temperature in vapour compression cycle occurs at

Compressor discharge
Evaporator
Expansion valve
Receiver

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

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

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Refrigeration and Air Conditioning
Highest pressure encountered in a refrigeration system should be

Critical pressure of refrigerant
Near critical pressure
Much above critical pressure
Much below critical pressure

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