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Refrigeration and Air Conditioning

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

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

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Refrigeration and Air Conditioning
In S.J. unit, one ton of refrigeration is equal to

21 kJ/ min
420 kJ/ min
840 kJ/ min
210 kJ/ min

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Refrigeration and Air Conditioning
The boiling point of ammonia is

-33.3°C
-77.7°C
-10.5°C
-30°C

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Refrigeration and Air Conditioning
Highest pressure encountered in a refrigeration system should be

Near critical pressure
Much below critical pressure
Critical pressure of refrigerant
Much above critical pressure

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

There is no such consideration
More than or equal to 3.65 kg
More than 10 kg
Less than 2 kg

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Refrigeration and Air Conditioning
Aqua ammonia is used as refrigerant in the following type of refrigeration system

Compression
Indirect
Direct
Absorption

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