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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
None of these
Reversed Carnot cycle
Bell Coleman cycle

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Refrigeration and Air Conditioning
The temperature of air recorded by a thermometer, when it is not affected by the moisture present in the air, is called

Wet bulb temperature
Dry bulb temperature
Dew point temperature
None of these

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Refrigeration and Air Conditioning
Superheating in a refrigeration cycle

O.P remains unaltered
Decreases C.O.P
Increases C.O.P
Other factors decide C.O.P

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Refrigeration and Air Conditioning
The capacity of a domestic refrigerator is in the range of

1 to 3 TR
3 to 5 TR
5 to 7 TR
0.1 to 0.3 TR

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Refrigeration and Air Conditioning
A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg)

100 kJ/kg
125 kJ/kg
50 kJ/kg
25 kJ/kg

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Refrigeration and Air Conditioning
The Freon group of refrigerants are

Hydrocarbon refrigerants
Inorganic refrigerants
Halocarbon refrigerants
Zoetrope refrigerants

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MORE MCQ ON Refrigeration and Air Conditioning

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