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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

15 bar
30 bar
2 bar
8 bar

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Refrigeration and Air Conditioning
During cooling and dehumidification, dry bulb temperature

Increases
None of these
Remains constant
Decreases

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Refrigeration and Air Conditioning
Which of the following cycles uses air as the refrigerant?

Carnot
Stirling
Bell Coleman
Ericson

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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
A bootstrap air cooling system has

Four heat exchangers
Three heat exchangers
Two heat exchangers
One heat exchanger

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

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

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MORE MCQ ON Refrigeration and Air Conditioning

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