Refrigeration and Air Conditioning A refrigerant compressor is used to 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 Raise the temperature of the refrigerant 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 below critical pressure Much above critical pressure Critical pressure of refrigerant Near critical pressure Much below critical pressure Much above critical pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a Carnot refrigerator in winter will be _________ as compared to C.O.P. in summer. Same Higher None of these Lower Same Higher None of these Lower ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The cooling system used for supersonic aircrafts and rockets is Reduced ambient air cooling system Bootstrap air cooling system Regenerative air cooling system Simple air cooling system Reduced ambient air cooling system Bootstrap air cooling system Regenerative air cooling system Simple air cooling system ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The central air conditioning system has ___________ overall efficiency as compared to individual systems. Higher Same Lower None of these Higher Same Lower None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning When the lower temperature of a refrigerating machine is fixed, then the coefficient of performance can be improved by Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds Operating the machine at lower speeds Raising the higher temperature Lowering the higher temperature Operating the machine at higher speeds Operating the machine at lower speeds ANSWER DOWNLOAD EXAMIANS APP
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