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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

High sensible heat
High total heat
Low latent heat
High latent heat

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Refrigeration and Air Conditioning
During sensible cooling,

Relative humidity remains constant
Specific humidity increases
Wet bulb temperature increases
Partial pressure of vapour remains constant

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Refrigeration and Air Conditioning
In a vapour compression system, the condition of refrigerant before passing through the condenser is

Saturated liquid
Dry saturated vapour
Superheated vapour
Wet vapour

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Refrigeration and Air Conditioning
The wet bulb temperature at 100% relative humidity is___ dry bulb temperature.

None of the listed here
Higher than
Same as
Lower than

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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

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

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Refrigeration and Air Conditioning
In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

1.5
0.3
0.67
0.6

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MORE MCQ ON Refrigeration and Air Conditioning

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