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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air conditioning means

Cooling
Dehumidifying
All of these
Heating

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Refrigeration and Air Conditioning
A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be

4.33
2.33
1.33
3.33

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

High sensible heat
Low latent heat
High latent heat
High total heat

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Refrigeration and Air Conditioning
The suction pipe diameter of refrigerating unit compressor in comparison to delivery side is

Equal
Smaller/bigger depending on capacity
Smaller
Bigger

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Refrigeration and Air Conditioning
The pressure at the outlet of a refrigerant compressor is called

Suction pressure
Back pressure
Critical pressure
Discharge pressure

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Refrigeration and Air Conditioning
An evaporator is also known as

Chilling coil
Cooling coil
All of these
Freezing coil

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MORE MCQ ON Refrigeration and Air Conditioning

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