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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using Freon is detected by

All of these
Sulphur sticks
Halide torch
Soap and water

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Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Electrolux refrigerator
Vapour absorption
Carnot cycle
Vapour compression

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Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

All of these
Halide torch
Sulphur sticks
Soap and water

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

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

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

As low as possible (3 to 11°C)
Zero
Any value
High, of the order of 25°

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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
Ice at 4°C
Mixture of ice and water under equilibrium conditions

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MORE MCQ ON Refrigeration and Air Conditioning

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