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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

None of these
Remains constant
Increases
Decreases

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Refrigeration and Air Conditioning
Moisture should be removed from refrigerants to avoid

All of these
Freezing at the expansion valve
Restriction to refrigerant flow
Corrosion of steel plates

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Inorganic refrigerants
Hydrocarbon refrigerants
Halocarbon refrigerants
Zoetrope refrigerants

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

Pressure lines
Temperature lines
Total heat lines
Entropy lines

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Refrigeration and Air Conditioning
The material of pipe lines for a system using Freon as a refrigerant should be

Steel
Copper
Aluminium
Brass

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Refrigeration and Air Conditioning
The undesirable property of a refrigerant is

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

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MORE MCQ ON Refrigeration and Air Conditioning

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