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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Ammonia is

Toxic and non-inflammable
Highly toxic and inflammable
Non-toxic
Non-inflammable

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

Higher critical temperature
Tow specific heat of liquid
High latent heat of vaporisation
High boiling point

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Refrigeration and Air Conditioning
In which of the following refrigeration system, waste heat can be effectively used?

Vapour absorption cycle
Vapour compression cycle
Air refrigeration cycle
None of the listed here

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Refrigeration and Air Conditioning
Allowable pressure on high pressure side or ammonia absorption system is of the order of

24 bars
Atmospheric pressure
Slightly above atmospheric pressure
56 bars

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Refrigeration and Air Conditioning
The condition of refrigerant after passing through the condenser in a vapour compression system is

Saturated liquid
Wet vapour
Superheated vapour
Dry saturated vapour

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Refrigeration and Air Conditioning
Which of the following refrigerant is highly toxic and flammable?

R-12
Sulphur dioxide
Carbon dioxide
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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