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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is

Less
Same
More
More or less depending on ambient conditions

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Refrigeration and Air Conditioning
Reducing suction pressure in refrigeration cycle

Increases power required per ton of refrigeration
All of these
Lowers evaporation temperature
Lowers compressor capacity because vapour is lighter

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Refrigeration and Air Conditioning
Which of the following refrigerants has lowest freezing point?

Freon-12
Freon-22
NH3
CO2

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Non-inflammable and toxic
Nontoxic and non-inflammable
Toxic
Inflammable

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Refrigeration and Air Conditioning
Which of the following refrigerant has the maximum ozone depletion potential in the stratosphere?

Sulphur dioxide
Carbon dioxide
Ammonia
Fluorine

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Compressor and condenser
Compressor and evaporator
Condenser and expansion valve
Expansion valve and evaporator

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MORE MCQ ON Refrigeration and Air Conditioning

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