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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Centrifugal
Miniature sealed unit
Axial
Piston type reciprocating

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Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Saturated air
Dry air
Specific humidity
Moist air

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Refrigeration and Air Conditioning
The total pressure exerted by the mixture of air and water vapour is equal to the sum of pressures which each constituent would exert, if it occupied the same space by itself. This statement is called

Dalton's law of partial pressures
Avogadro's hypothesis
Kinetic theory of gases
Newton's law of gases

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Dry saturated vapour
Wet vapour
Saturated liquid
Superheated vapour

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Refrigeration and Air Conditioning
The operating temperature of a cold storage is -2°C. The heat leakage from the surrounding is 30 kW for the ambient temperature of 40°C. The actual C.O.P. of refrigeration plant used is one fourth that of ideal plant working between the same temperatures. The power required to drive the plant is

18.6 kW
7.44 kW
1.86 kW
3.72 kW

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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