Refrigeration and Air Conditioning
The thermostatic expansion valve operates on the changes in the

Degree of superheat at exit from the evaporator
Pressure in the evaporator
None of these
Temperature of the evaporator

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Refrigeration and Air Conditioning
In a lithium bromide absorption refrigeration system

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