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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For obtaining high COP, the pressure range of compressor should be

Low
Optimum
Any value
High

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Halocarbon refrigerants
Zoetrope refrigerants
Inorganic refrigerants
Hydrocarbon refrigerants

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

Indirect
Absorption
Compression
Direct

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Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Absorber
Condenser, absorber and separator (rectifier)
Condenser
Evaporator

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Refrigeration and Air Conditioning
Pressure of water vapour is given by

0.622 Pv/ (Pb - Pv)
μ/[1 - (1 - μ) (Ps/Pb)]
[Pv (Pb - Pd)]/ [Pd (Pb - Pv)]
None of these

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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
6
1.2
0.2

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MORE MCQ ON Refrigeration and Air Conditioning

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