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Refrigeration and Air Conditioning

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

Copper
Aluminium
Brass
Steel

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Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

Two fluids
Three fluids
None of the listed here
Single fluid

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

9: 1
1: 3
1: 9
1: 1

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Refrigeration and Air Conditioning
A vapour absorption refrigerator uses _________ as a refrigerant.

Ammonia
Water
Freon
Aqua-ammonia

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Refrigeration and Air Conditioning
The advantage of dry compression is that

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

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Always less than unity
Any one of the above
Equal to unity
Always more than unity

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MORE MCQ ON Refrigeration and Air Conditioning

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