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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be

1.2
5
0.2
6

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Refrigeration and Air Conditioning
A refrigerant with the highest critical pressure is

R-22
R-12
Ammonia
R-11

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Refrigeration and Air Conditioning
Which of the following refrigerant is highly toxic and flammable?

R-12
Sulphur dioxide
Ammonia
Carbon dioxide

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Refrigeration and Air Conditioning
Presence of moisture in a refrigerant affects the working of

Evaporator
Compressor
Condenser
Expansion valve

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Refrigeration and Air Conditioning
During dehumidification process, _________ remains constant.

Specific humidity
Relative humidity
Wet bulb temperature
Dry bulb temperature

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Refrigeration and Air Conditioning
Pick up the wrong statement. A refrigerant should have

High latent heat of vaporisation
Tow specific heat of liquid
Higher critical temperature
High boiling point

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