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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The central air conditioning system has ___________ overall efficiency as compared to individual systems.

Lower
None of these
Same
Higher

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Refrigeration and Air Conditioning
In air-conditioning of aeroplanes, using air as a refrigerant, the cycle used is

Reversed Otto cycle
Reversed Brayton cycle
Reversed Joule cycle
Reversed Carnot cycle

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Refrigeration and Air Conditioning
During sensible cooling of air, specific humidity

Increases
Decreases
Remains constant
None of the listed here

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Refrigeration and Air Conditioning
The ratio of the actual mass of water vapour in a unit mass of dry air to the mass of water vapour in the same mass of dry air when it is saturated at the same temperature and pressure, is called

Degree of saturation
Relative humidity
Humidity ratio
Absolute humidity

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Refrigeration and Air Conditioning
The refrigerant supplied to a compressor must be

A mixture of liquid and vapour refrigerant
None of these
Superheated vapour refrigerant
Dry saturated liquid refrigerant

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

High latent heat
Low latent heat
High sensible heat
High total heat

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MORE MCQ ON Refrigeration and Air Conditioning

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