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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
In a refrigeration system, heat absorbed in comparison to heat rejected is

Same
Less
More
More for small capacity and less for high capacity

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Refrigeration and Air Conditioning
One tonne of refrigeration (1TR) means that the heat removing capacity is

210 kJ/min
420 kJ/min
21 kJ/min
620 kJ/min

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Refrigeration and Air Conditioning
The refrigerant used for absorption refrigerators working on heat from solar collectors is a mixture of water and

Sulphur dioxide
R-12
Lithium bromide
Carbon dioxide

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Refrigeration and Air Conditioning
The refrigerant for a refrigerator should have

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

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Refrigeration and Air Conditioning
The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and hA = Enthalpy of air at the end of dehumidification process)

(h2 - hA)/ (h1 - h2)
(h1 - h2)/ (hA - h2)
(hA - h2)/ (h1 - h2)
(hA - h1)/ (h2 - h1)

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Refrigeration and Air Conditioning
During sensible heating of air _________ decreases.

Wet bulb temperature
Relative humidity
Specific humidity
Dry bulb temperature

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MORE MCQ ON Refrigeration and Air Conditioning

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