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 Carbon dioxide Ammonia Freon Brine Carbon dioxide Ammonia Freon Brine 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 O.P)R - 1 O.P)P = ( ( O.P.)P = ( ( O.P)P = ( ( ( O.P.)R + 2 O.P.)R + 1 O.P.)P = ( O.P)R O.P)R - 1 O.P)P = ( ( O.P.)P = ( ( O.P)P = ( ( ( O.P.)R + 2 O.P.)R + 1 O.P.)P = ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A mixture of dry air and water vapour, when the air has diffused the maximum amount of water vapour into it, is called Moist air Saturated air Specific humidity Dry air Moist air Saturated air Specific humidity Dry air ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The C.O.P. of a refrigeration cycle with lowering of condenser temperature, keeping the evaporator temperature constant, will Remain unaffected Increase Decrease May increase or decrease depending on the type of refrigerant used Remain unaffected Increase Decrease May increase or decrease depending on the type of refrigerant used ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The leaks in a refrigeration system using Freon are detected by Smelling Sulphur sticks which on detection gives white smoke Using reagents Halide torch which on detection produces greenish flame lighting Smelling Sulphur sticks which on detection gives white smoke Using reagents Halide torch which on detection produces greenish flame lighting ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning For large tonnage (more than 200 TR) air-conditioning applications, the compressor recommended is Rotating Reciprocating Screw Centrifugal Rotating Reciprocating Screw Centrifugal ANSWER DOWNLOAD EXAMIANS APP
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