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Refrigeration and Air Conditioning

Refrigeration and Air Conditioning
Cooling water is required for following equipment in ammonia absorption plant

Absorber
Condenser
Condenser, absorber and separator (rectifier)
Evaporator

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

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

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Refrigeration and Air Conditioning
A standard ice point temperature corresponds to the temperature of

Ice at 4°C
Solid and dry ice
Water at 0°C
Mixture of ice and water under equilibrium conditions

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

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

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Refrigeration and Air Conditioning
In vapour compression cycle the condition of refrigerant is superheated vapour

Before passing through the condenser
After passing through the expansion or throttle valve
After passing through the condenser
Before entering the expansion valve

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Refrigeration and Air Conditioning
In a refrigerating machine, heat rejected is _________ heat absorbed.

Less than
Equal to
None of these
Greater than

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MORE MCQ ON Refrigeration and Air Conditioning

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