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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Accumulators should have adequate volume to store refrigerant charge at least

0.75
0.1
0.25
0.5

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Refrigeration and Air Conditioning
Under cooling in a refrigeration cycle

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

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Refrigeration and Air Conditioning
In vapour compression refrigeration system, refrigerant occurs as liquid between

Condenser and expansion valve
Compressor and evaporator
Expansion valve and evaporator
Compressor and condenser

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Refrigeration and Air Conditioning
The specific humidity during humidification process

None of these
Remains constant
Decreases
Increases

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Refrigeration and Air Conditioning
Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of

1: 3
1: 9
1: 1
9: 1

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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

6
1.2
5
0.2

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