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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
An Electrolux refrigerator is called a ___ absorption system.

None of the listed here
Three fluids
Two fluids
Single fluid

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Ammonia is absorbed in hydrogen
Ammonia is absorbed in water
Ammonia evaporates in hydrogen
Hydrogen evaporates in ammonia

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

O.P remains unaltered
Decreases C.O.P
Increases C.O.P
Other factors decide C.O.P

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

Carbon dioxide
Ammonia
Fluorine
Sulphur dioxide

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

High boiling point
Non-toxic
Non-flammable
Non-explosive

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Refrigeration and Air Conditioning
The comfort conditions in air conditioning are at (where DBT = Dry bulb temperature, and RH = Relative humidity)

25°C DBT and 100% RH
20°C DBT and 80% RH
25°C DBT and 40% RH
22°C DBT and 60% RH

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