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Refrigeration and Air Conditioning

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

Expansion valve
Condenser
Compressor
Evaporator

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Refrigeration and Air Conditioning
Chaperon equation is applicable for registration at

Sublimation temperature
Triple point
Saturation point of vapour
Saturation point of liquid

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Refrigeration and Air Conditioning
The unit of thermal diffusivity is

m²/h
m/hK
m/h
m²/hK

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Refrigeration and Air Conditioning
For better C.O.P of refrigerator, the pressure range corresponding to temperature in evaporator and condenser must be

Small
Anything
High
Equal

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Refrigeration and Air Conditioning
When the air is passed through an insulated chamber having sprays of water maintained at a temperature higher than the dew point temperature of entering air but lower than its dry bulb temperature, then the air is said to be

Heated and dehumidified
Cooled and dehumidified
Cooled and humidified
Heated and humidified

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Refrigeration and Air Conditioning
The formation of frost on cooling coils in a refrigerator

Improves C.O.P. of the system
Increases power consumption
Increases heat transfer
Reduces power consumption

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MORE MCQ ON Refrigeration and Air Conditioning

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