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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and dew point temperature, is called

Degree of saturation
Dry bulb depression
Dew point depression
Wet bulb depression

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Nearly same work input as for vapour compression cycle
Very little work input
Maximum work input
Zero work input

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Refrigeration and Air Conditioning
For air conditioning the operation theater in a hospital, the percentage of outside air in the air supplied is

100
Zero
20
50

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

Ammonia
CO2
Freon-22
Freon-11

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Refrigeration and Air Conditioning
Critical pressure of a liquid is the pressure

Above which liquid becomes solid
Above which liquid will remain liquid
Above which liquid becomes gas
Above which liquid becomes vapour

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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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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