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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

Steel
Brass
Aluminium
Copper

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Refrigeration and Air Conditioning
Vertical lines on pressure-enthalpy chart show constant

Total heat lines
Temperature lines
Pressure lines
Entropy lines

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible heating of air

None of these
Remains constant
Increases
Decreases

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Sub-cooled liquid region
Wet vapour region
Superheated vapour region
None of the listed here

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Refrigeration and Air Conditioning
In chemical dehumidification process,

Wet bulb temperature decreases
Dry bulb temperature increases
All of these
Dew point temperature decreases

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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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MORE MCQ ON Refrigeration and Air Conditioning

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