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)P = ( ( ( O.P.)R + 1 ( O.P.)P = ( O.P.)R + 2 O.P)R - 1 O.P)P = ( O.P.)P = ( ( O.P)R O.P)P = ( ( ( O.P.)R + 1 ( O.P.)P = ( O.P.)R + 2 O.P)R - 1 O.P)P = ( O.P.)P = ( ( ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Air refrigerator works on None of these Both (A) and (B) Reversed Carnot cycle Bell Coleman cycle None of these Both (A) and (B) Reversed Carnot cycle Bell Coleman cycle ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In Electrolux refrigerator Ammonia is absorbed in water Hydrogen evaporates in ammonia Ammonia is absorbed in hydrogen Ammonia evaporates in hydrogen Ammonia is absorbed in water Hydrogen evaporates in ammonia Ammonia is absorbed in hydrogen Ammonia evaporates in hydrogen 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 Freon Carbon dioxide Brine Ammonia Freon Carbon dioxide Brine ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of Aluminium Steel Brass Copper Aluminium Steel Brass Copper ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A reversible engine has ideal thermal efficiency of 30%. When it is used as a refrigerating machine with all other conditions unchanged, the coefficient of performance will be 2.33 1.33 3.33 4.33 2.33 1.33 3.33 4.33 ANSWER DOWNLOAD EXAMIANS APP
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