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Refrigeration and Air Conditioning

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

Absorption
Direct
Compression
Indirect

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Refrigeration and Air Conditioning
Which of the following is not a desirable property of a refrigerant?

Good electrical conductor
High risibility with oil
Low boiling point
Large latent heat

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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 depending on rating
More
Same
Less

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Refrigeration and Air Conditioning
The refrigerant used in small tonnage commercial machines (hermetically sealed units) is

Ammonia
R-12
Sulphur dioxide
Carbon dioxide

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Reversed Rankine
Reversed Carnot
Carnot
Rankine

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Refrigeration and Air Conditioning
Absorption system normally uses the following refrigerant

CO2
Freon-22
Freon-11
Ammonia

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MORE MCQ ON Refrigeration and Air Conditioning

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