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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a vapour compression cycle, the refrigerant immediately after expansion valve is

Saturated liquid
Liquid
Wet vapour
Sub-cooled liquid

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Refrigeration and Air Conditioning
The cooling system used for supersonic aircrafts and rockets is

Bootstrap air cooling system
Simple air cooling system
Regenerative air cooling system
Reduced ambient air cooling system

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Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Brass
Steel
Copper
Aluminium

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

Non-explosive
High boiling point
Non-flammable
Non-toxic

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

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

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Refrigeration and Air Conditioning
The lowest temperature during the cycle in a vapour compression system occurs after

Condensation
Compression
Expansion
Evaporation

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MORE MCQ ON Refrigeration and Air Conditioning

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