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Refrigeration and Air Conditioning

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

Equal to
Less than
Greater than
None of these

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Refrigeration and Air Conditioning
A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called

Saturated air
Moist air
Dry air
Specific humidity

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Refrigeration and Air Conditioning
Ammonia absorption refrigeration cycle requires

Zero work input
Nearly same work input as for vapour compression cycle
Maximum work input
Very little work input

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Refrigeration and Air Conditioning
The specific humidity during dehumidification process

Increases
Decreases
None of these
Remains constant

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Refrigeration and Air Conditioning
One ton refrigeration corresponds to

80 kcal/ min
50 kcal/ hr
50 kcal/ min
80 kcal/ hr

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Refrigeration and Air Conditioning
The temperature of ammonia after compression in a vapour compression system is

70 to 110°C
50 to 70°C
20 to 50°C
None of these

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