Refrigeration and Air Conditioning The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer. Higher Lower None of these Same Higher Lower None of these Same ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a vapour compression system, the condition of refrigerant before passing through the condenser is Superheated vapour Saturated liquid Wet vapour Dry saturated vapour Superheated vapour Saturated liquid Wet vapour Dry saturated vapour ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In aircraft, air refrigeration Cycle is used because of High heat transfer rate Higher coefficient of performance Low temperature at high altitudes Low weight per tonne of refrigeration High heat transfer rate Higher coefficient of performance Low temperature at high altitudes Low weight per tonne of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of -23°C, then the Carnot COP will be 5 1.2 0.2 6 5 1.2 0.2 6 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The refrigerant used in small tonnage commercial machines (hermetically sealed units) is Ammonia R-12 Carbon dioxide Sulphur dioxide Ammonia R-12 Carbon dioxide Sulphur dioxide ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Mass flow ratio of NH₃ in comparison to Freon-12 for same refrigeration load and same temperature limits is of the order of 1: 1 1: 9 1: 3 9: 1 1: 1 1: 9 1: 3 9: 1 ANSWER DOWNLOAD EXAMIANS APP
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