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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In order to collect liquid refrigerant and to prevent it from going to a ________, a device known as accumulator is used at the suction of compressor.

Evaporator
Expansion valve
Compressor
Condenser

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Compression
Expansion
Condensation
Evaporation

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Refrigeration and Air Conditioning
In actual air-conditioning applications for R-12 and R-22, and operating at a condenser temperature of 40° C and an evaporator temperature of 5° C, the heat rejection factor is about

5.12
1.25
2.15
1

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Refrigeration and Air Conditioning
Which of the following refrigerant has the highest freezing point.

R-12
Carbon dioxide
Ammonia
Sulphur dioxide

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Refrigeration and Air Conditioning
During heating and dehumidification process, dry bulb temperature

Decreases
None of these
Increases
Remains constant

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Refrigeration and Air Conditioning
The capillary tube, as an expansion device, is used in

Domestic refrigerators
Room air conditioners
Water coolers
All of these

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