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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The leakage in a refrigeration system using ammonia is detected by

All of these
Soap and water
Halide torch
Sulphur sticks

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Refrigeration and Air Conditioning
The sub-cooling in a refrigeration cycle

None of these
Increases C.O.P.
Does not alter C.O.P.
Decreases C.O.P.

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Refrigeration and Air Conditioning
The vapour compression refrigerator employs the following cycle

Reversed Carnot
Reversed Rankine
Rankine
Carnot

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

Increases
None of the listed here
Decreases
Remains constant

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Refrigeration and Air Conditioning
The superheated vapour region, in a pressure enthalpy chart, is represented by the space

To the right of saturated liquid line
None of these
Between the saturated liquid line and saturated vapour line
To the left of saturated liquid line

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Refrigeration and Air Conditioning
The mass of water vapour present in __________ is called absolute humidity.

1 kg of wet air
1 kg of dry air
1 m3 of dry air
1 m3 of water

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