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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Aluminium
Steel
Copper
Brass

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Refrigeration and Air Conditioning
The COP of a domestic refrigerator

Is less than 1
Depends upon the make
Is equal to 1
Is more than 1

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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

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

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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
Liquid pump
Absorber and generator

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Refrigeration and Air Conditioning
In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is

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

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Sulphur dioxide
Lithium bromide
R-12
Carbon dioxide

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MORE MCQ ON Refrigeration and Air Conditioning

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