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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Where does the lowest temperature occur in a vapour compression cycle?

Condenser
Expansion valve
Evaporator
Compressor

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Refrigeration and Air Conditioning
In Electrolux refrigerator

Hydrogen evaporates in ammonia
Ammonia evaporates in hydrogen
Ammonia is absorbed in water
Ammonia is absorbed in hydrogen

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Refrigeration and Air Conditioning
An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by

e₁e₂
1/e₁ + 1/e₂
e₁ + e₂
(e₁ + e₂)/ e₁ + e₂ - e₁e₂

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Refrigeration and Air Conditioning
Air refrigerator works on

Both (A) and (B)
None of these
Reversed Carnot cycle
Bell Coleman cycle

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Refrigeration and Air Conditioning
In a pressure enthalpy chart, the space to the left of the saturated liquid line represents

Wet vapour region
None of the listed here
Superheated vapour region
Sub-cooled liquid region

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Refrigeration and Air Conditioning
As relative humidity decreases, the dew point temperature will be ___ wet bulb temperature.

Lower than
Higher than
Same as
None of the listed here

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MORE MCQ ON Refrigeration and Air Conditioning

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