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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Vapour compression refrigeration is somewhat like

Carnot cycle
Reversed Carnot cycle
None of these

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Refrigeration and Air Conditioning
The relative coefficient of performance is

None of these
Actual COP/theoretical COP
Actual COP × theoretical COP
Theoretical COP/actual COP

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Refrigeration and Air Conditioning
The specific humidity during cooling and dehumidification

Increases
Remains constant
Decreases
None of these

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Refrigeration and Air Conditioning
Freon group of refrigerants are

Non-inflammable and toxic
Toxic
Inflammable
Nontoxic and non-inflammable

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Refrigeration and Air Conditioning
At lower temperatures and pressures, the latent heat of vaporisation of a refrigerant

decreases
remains same
increases
depends on other factors

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Refrigeration and Air Conditioning
The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is

0.6
0.4
0.67
0.376

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