Refrigeration and Air Conditioning A refrigerant compressor is used to Raise the temperature of the refrigerant All of these Raise the pressure of the refrigerant Circulate the refrigerant through the refrigerating system Raise the temperature of the refrigerant All of these Raise the pressure of the refrigerant Circulate the refrigerant through the refrigerating system ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A valve which maintains a constant degree of superheat at the end of the evaporator coil, is called Automatic expansion valve High side float valve Thermostatic expansion valve Low side float valve Automatic expansion valve High side float valve Thermostatic expansion valve Low side float valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance (C.O.P.) of a refrigerator working as a heat pump is given by ( O.P.)R + 1 O.P.)P = ( ( O.P.)R + 2 O.P)R - 1 ( O.P)R ( O.P)P = ( O.P.)P = ( O.P)P = ( ( O.P.)R + 1 O.P.)P = ( ( O.P.)R + 2 O.P)R - 1 ( O.P)R ( O.P)P = ( O.P.)P = ( O.P)P = ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The atmospheric air at dry bulb temperature of 15°C enters a heating coil maintained at 40°C. The air leaves the heating coil at 25°C. The bypass factor of the heating coil is 0.6 0.67 0.376 0.4 0.6 0.67 0.376 0.4 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A bootstrap air cooling system has One heat exchanger Three heat exchangers Four heat exchangers Two heat exchangers One heat exchanger Three heat exchangers Four heat exchangers Two heat exchangers ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The colour of the flame of halide torch, in case of leakage of Freon refrigerant, will change to Bright green Orange Red Yellow Bright green Orange Red Yellow ANSWER DOWNLOAD EXAMIANS APP
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