Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

None of these
Dry saturated liquid refrigerant
A mixture of liquid and vapour refrigerant
Superheated vapour refrigerant

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Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

Ammonia is used as a refrigerant and lithium bromide as an absorbent
None of these
Lithium bromide is used as a refrigerant and water as an absorbent
Water is used as a refrigerant and lithium bromide as an absorbent

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