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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
More for small capacity and less for high capacity
Less
More

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Refrigeration and Air Conditioning
In refrigerator, liquid receiver is required between condenser and flow controlling device, if quantity of refrigerant for system is

Less than 2 kg
More than or equal to 3.65 kg
More than 10 kg
There is no such consideration

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Refrigeration and Air Conditioning
Highest temperature encountered in refrigeration cycle should be

Much below critical temperature
Above critical temperature
Near critical temperature of refrigerant
At critical Temperature

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Refrigeration and Air Conditioning
In a flooded evaporator refrigerator, an accumulator at suction of compressor is used to

Collect vapours
Detect liquid in vapour
Superheat the vapour
Collect liquid refrigerant and prevent it from going to compressor

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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)

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

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Refrigeration and Air Conditioning
The condensing pressure due to the presence of non-condensable gases, as compared to that actually required for condensing temperatures without non-condensable gases,

Will be lower
Will be higher
May be higher or lower depending upon the nature of non-condensable gases
Will remain unaffected

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MORE MCQ ON Refrigeration and Air Conditioning

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