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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The operating pressure for refrigerating units using R-12 as a refrigerant is

2 bar
30 bar
8 bar
15 bar

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Refrigeration and Air Conditioning
The wet bulb temperature during sensible cooling of air

Remains constant
None of these
Decreases
Increases

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Refrigeration and Air Conditioning
Rating of a domestic refrigerator is of the order of

10 tons
5 tons
40 tons
0.1 ton

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Refrigeration and Air Conditioning
In vapour compression cycle using NH₃ as refrigerant, initial charge is filled at

Suction of compressor
Delivery of compressor
Low pressure side near receiver
High pressure side close to receiver

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Refrigeration and Air Conditioning
The capillary tube is not used in large capacity refrigeration systems because

Cost is too high
Capacity control is not possible
Required pressure drop cannot be achieved
It is made of copper

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Refrigeration and Air Conditioning
For unsaturated air, the dew point temperature is __________ wet bulb temperature.

Equal to
Less than
More than
None of these

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MORE MCQ ON Refrigeration and Air Conditioning

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