Refrigeration and Air Conditioning The sub-cooling in a refrigeration cycle Increases C.O.P. Does not alter C.O.P. Decreases C.O.P. None of these Increases C.O.P. Does not alter C.O.P. Decreases C.O.P. None of these ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Nusselt number (NN) is given by NN = μ cp/k NN = V²/t.cp NN = hl/k NN = ρ V l /μ NN = μ cp/k NN = V²/t.cp NN = hl/k NN = ρ V l /μ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In mechanical refrigeration system, the refrigerant has the maximum temperature Between condenser and evaporator Between compressor and condenser In evaporator Before expansion valve Between condenser and evaporator Between compressor and condenser In evaporator Before expansion valve ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The pressure at the inlet of a refrigerant compressor is called Suction pressure Back pressure Critical pressure Discharge pressure Suction pressure Back pressure Critical pressure Discharge pressure ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Air refrigerator works on None of these Reversed Carnot cycle Bell Coleman cycle Both (A) and (B) None of these Reversed Carnot cycle Bell Coleman cycle Both (A) and (B) 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)P = ( O.P.)R + 2 O.P)R - 1 O.P.)R + 1 O.P.)P = ( ( ( O.P)R O.P.)P = ( ( ( O.P)P = ( O.P)P = ( O.P.)R + 2 O.P)R - 1 O.P.)R + 1 O.P.)P = ( ( ( O.P)R O.P.)P = ( ( ( O.P)P = ( ANSWER DOWNLOAD EXAMIANS APP
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