Refrigeration and Air Conditioning Refrigeration in aeroplanes usually employs the following refrigerant Freon-22 CO2 Freon-11 Air Freon-22 CO2 Freon-11 Air ANSWER DOWNLOAD EXAMIANS APP
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 Before passing through the condenser After passing through the expansion or throttle valve After passing through the condenser Before entering the expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In a reversed Brayton cycle, the heat is absorbed by the air during Constant pressure expansion process Constant pressure cooling process Isentropic compression process Isentropic expansion process Constant pressure expansion process Constant pressure cooling process Isentropic compression process Isentropic expansion process ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Highest pressure encountered in a refrigeration system should be Critical pressure of refrigerant Near critical pressure Much above critical pressure Much below critical pressure Critical pressure of refrigerant Near critical pressure Much above critical pressure Much below critical pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During sensible cooling, Wet bulb temperature increases Specific humidity increases Relative humidity remains constant Partial pressure of vapour remains constant Wet bulb temperature increases Specific humidity increases Relative humidity remains constant Partial pressure of vapour remains constant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The relative coefficient of performance is equal to (Actual C.O.P.) × (Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) None of these (Actual C.O.P.) /(Theoretical C.O.P.) (Actual C.O.P.) × (Theoretical C.O.P.) (Theoretical C.O.P.)/ (Actual C.O.P.) None of these (Actual C.O.P.) /(Theoretical C.O.P.) ANSWER DOWNLOAD EXAMIANS APP
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