Refrigeration and Air Conditioning The formation of frost on cooling coils in a refrigerator Reduces power consumption Increases heat transfer Increases power consumption Improves C.O.P. of the system Reduces power consumption Increases heat transfer Increases power consumption Improves C.O.P. of the system ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In S.J. unit, one ton of refrigeration is equal to 210 kJ/ min 21 kJ/ min 840 kJ/ min 420 kJ/ min 210 kJ/ min 21 kJ/ min 840 kJ/ min 420 kJ/ min ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A certain refrigerating system has a normal operating suction pressure of 10 kg/cm gauge and condensing pressure of about 67 kg/cm. The refrigerant used is Ammonia Carbon dioxide Freon Brine Ammonia Carbon dioxide Freon Brine ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A heat pump working on a reversed Carnot cycle has a C.O.P. of 5. It works as a refrigerator taking 1 kW of work input. The refrigerating effect will be 1 kW 4 kW 3 kW 2 kW 1 kW 4 kW 3 kW 2 kW ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Vertical lines on pressure-enthalpy chart show constant Pressure lines Total heat lines Entropy lines Temperature lines Pressure lines Total heat lines Entropy lines Temperature lines ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Under cooling in a refrigeration cycle Decreases C.O.P Increases C.O.P O.P remains unaltered Other factors decide C.O.P Decreases C.O.P Increases C.O.P O.P remains unaltered Other factors decide C.O.P ANSWER DOWNLOAD EXAMIANS APP
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