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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The difference between dry bulb temperature and wet bulb temperature, is called

Wet bulb depression
Degree of saturation
Dry bulb depression
Dew point depression

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Refrigeration and Air Conditioning
In aqua ammonia absorption refrigeration system, incomplete rectification leads to accumulation of water in

Evaporator
Absorber
None of these
Condenser

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Refrigeration and Air Conditioning
Carbon dioxide is

Odourless
Colourless
All of the listed here
Non-flammable

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Refrigeration and Air Conditioning
In which of the following refrigeration system, waste heat can be effectively used?

Air refrigeration cycle
None of the listed here
Vapour compression cycle
Vapour absorption cycle

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

R-12
Carbon dioxide
Ammonia
Sulphur dioxide

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Refrigeration and Air Conditioning
When the temperature of the surrounding is higher than the temperature of the body, then the heat loss by convection from the body to the surrounding will be

Negative
Zero
Positive
None of the listed here

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