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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a refrigeration cycle, the flow of refrigerant is controlled by

Compressor
Evaporator
Expansion valve
Condenser

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Refrigeration and Air Conditioning
The condition of refrigerant as it leaves the compressor in a vapour compression system is

Dry saturated vapour
Wet vapour
Superheated vapour
Saturated liquid

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

High latent heat of vaporisation
Tow specific heat of liquid
High boiling point
Higher critical temperature

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Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

25 kJ/kg
50 kJ/kg
100 kJ/kg
125 kJ/kg

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Equal to
Greater than
Less than
None of these

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Refrigeration and Air Conditioning
Air conditioning means

All of these
Cooling
Heating
Dehumidifying

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MORE MCQ ON Refrigeration and Air Conditioning

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