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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

None of these
Reversed Carnot cycle
Carnot cycle

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Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Large latent heat
High risibility with oil
Good electrical conductor
Low boiling point

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Refrigeration and Air Conditioning
Chaperon equation is a relation between

Temperature and enthalpy
Temperature, pressure, specific volume and enthalpy
Specific volume and enthalpy
Temperature, pressure and enthalpy

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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 humidified
Heated and dehumidified
Cooled and dehumidified

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Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

Atmospheric pressure
Slightly above atmospheric pressure
56 bars
24 bars

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Decreases
Increases
None of these
Remains constant

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