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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is

Ammonia
Carbon dioxide
Freon
Brine

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

3 to 5 TR
5 to 7 TR
0.1 to 0.3 TR
1 to 3 TR

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Refrigeration and Air Conditioning
Most of the domestic refrigerators work on the following refrigeration system

Vapour absorption
Vapour compression
Electrolux refrigerator
Carnot cycle

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

decreases
increases
remains same
depends on other factors

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Refrigeration and Air Conditioning
If the evaporator temperature of a plant is lowered, keeping the condenser temperature constant, the h.p. of compressor required will be

More
Less
More/less depending on rating
Same

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Refrigeration and Air Conditioning
A vapour absorption refrigeration system

Requires little power consumption
Gives quiet operation
Cools below 0°C
Gives noisy operation

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MORE MCQ ON Refrigeration and Air Conditioning

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