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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The domestic refrigerator uses following type of compressor

Centrifugal
Axial
Miniature sealed unit
Piston type reciprocating

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Refrigeration and Air Conditioning
The conditioned air supplied to the room must have the capacity to take up

None of the listed here
Both room sensible heat and latent heat loads
Room latent heat load only
Room sensible heat load only

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Refrigeration and Air Conditioning
In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be

Any value
Zero
As low as possible (3 to 11°C)
High, of the order of 25°

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Refrigeration and Air Conditioning
A condenser of refrigeration system rejects heat at the rate of 120 kW, while its compressor consumes a power of 30 kW. The coefficient of performance of the system will be

3
43833
43834
4

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Refrigeration and Air Conditioning
The ratio of actual mass of water vapour in a given volume of moist air to the mass of water vapour in the same volume of saturated air at the same temperature and pressure, is called

Humidity ratio
Absolute humidity
Relative humidity
Degree of saturation

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

None of these
Less than
Greater than
Equal to

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