Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of Higher coefficient of performance Low weight per tonne of refrigeration High heat transfer rate Low temperature at high altitudes Higher coefficient of performance Low weight per tonne of refrigeration High heat transfer rate Low temperature at high altitudes ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is equal to (Actual C.O.P.) × (Theoretical C.O.P.) None of these (Actual C.O.P.) /(Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) (Actual C.O.P.) × (Theoretical C.O.P.) None of these (Actual C.O.P.) /(Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning An important characteristic of absorption system of refrigeration is noisy operation quiet operation cooling below 0°C very little power consumption noisy operation quiet operation cooling below 0°C very little power consumption ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The condition of refrigerant after passing through the condenser in a vapour compression system is Saturated liquid Dry saturated vapour Superheated vapour Wet vapour Saturated liquid Dry saturated vapour Superheated vapour Wet vapour ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The vapour pressure of refrigerant should be Could be anything Equal to atmospheric pressure Higher than atmospheric pressure Lower than atmospheric pressure Could be anything Equal to atmospheric pressure Higher than atmospheric pressure Lower than atmospheric pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A one tonne refrigerating machine means that One tonne refrigerant is used One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min One tonne is the total mass of machine One tonne of water can be converted into ice One tonne refrigerant is used One tonne of ice when melts from and at 0° C in 24 hours, the refrigeration effect is equivalent to 210 kJ/min One tonne is the total mass of machine One tonne of water can be converted into ice ANSWER DOWNLOAD EXAMIANS APP
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