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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Where does the lowest temperature occur in a vapour compression cycle?

Expansion valve
Evaporator
Compressor
Condenser

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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
A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of -23°C. The Carnot coefficient of performance of cycle will be

5
1.2
0.2
6

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Refrigeration and Air Conditioning
The index which correlates the combined effects of air temperature, relative humidity and air velocity on the human body, is known as

Mean radiant temperature
Dew point temperature
None of the listed here
Effective temperature

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

Indirect
Compression
Absorption
Direct

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Refrigeration and Air Conditioning
The value of C.O.P in vapour compression cycle is usually

Always less than unity
Any one of the above
Always more than unity
Equal to unity

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MORE MCQ ON Refrigeration and Air Conditioning

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