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Refrigeration and Air Conditioning

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

Piston type reciprocating
Miniature sealed unit
Axial
Centrifugal

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

Low latent heat
High sensible heat
High latent heat
High total heat

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Solid and dry ice
Water at 0°C
Mixture of ice and water under equilibrium conditions
Ice at 4°C

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Refrigeration and Air Conditioning
Hydrogen is used in Electrolux refrigeration system so as to _________ the rate of evaporation of the liquid ammonia passing through the evaporator.

None of these
Equalize
Reduce
Increase

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Lowers evaporation temperature
All of these
Increases power required per ton of refrigeration
Lowers compressor capacity because vapour is lighter

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

All of these
Freezing at the expansion valve
Restriction to refrigerant flow
Corrosion of steel plates

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MORE MCQ ON Refrigeration and Air Conditioning

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