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Refrigeration and Air Conditioning

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

All of these
Sulphur sticks
Soap and water
Halide torch

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Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Aluminium
Copper
Steel
Brass

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

Increases C.O.P
O.P remains unaltered
Decreases C.O.P
Other factors decide C.O.P

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Refrigeration and Air Conditioning
The advantage of dry compression is that

All of these
It permits higher speeds to be used
It permits complete evaporation in the evaporator
It results in high volumetric and mechanical efficiency

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Refrigeration and Air Conditioning
In which of the following refrigeration system, waste heat can be effectively used?

None of the listed here
Vapour absorption cycle
Vapour compression cycle
Air refrigeration cycle

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

420 kJ/min
620 kJ/min
21 kJ/min
210 kJ/min

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MORE MCQ ON Refrigeration and Air Conditioning

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