Refrigeration and Air Conditioning Ammonia absorption refrigeration cycle requires Nearly same work input as for vapour compression cycle Very little work input Maximum work input Zero work input Nearly same work input as for vapour compression cycle Very little work input Maximum work input Zero work input ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of Higher coefficient of performance High heat transfer rate Low weight per tonne of refrigeration Low temperature at high altitudes Higher coefficient of performance High heat transfer rate Low weight per tonne of refrigeration Low temperature at high altitudes ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Refrigeration in aeroplanes usually employs the following refrigerant Air CO2 Freon-22 Freon-11 Air CO2 Freon-22 Freon-11 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The evaporator used in household refrigerators is Non-frosting evaporator None of these Frosting evaporator Defrosting evaporator Non-frosting evaporator None of these Frosting evaporator Defrosting evaporator ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg 100 kJ/kg 50 kJ/kg 25 kJ/kg 125 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The operating pressure for refrigerating units using R-12 as a refrigerant is 30 bar 2 bar 15 bar 8 bar 30 bar 2 bar 15 bar 8 bar ANSWER DOWNLOAD EXAMIANS APP
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