Refrigeration and Air Conditioning Freon group of refrigerants are Nontoxic and non-inflammable Toxic Non-inflammable and toxic Inflammable Nontoxic and non-inflammable Toxic Non-inflammable and toxic Inflammable ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning An evaporator is also known as Freezing coil All of these Cooling coil Chilling coil Freezing coil All of these Cooling coil Chilling coil ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning During heating and humidification, the final relative humidity of air None of the listed here Can be lower or higher than that of the entering air Is lower than that of the entering air Is higher than that of the entering air None of the listed here Can be lower or higher than that of the entering air Is lower than that of the entering air Is higher than that of the entering air ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The sub-cooling in a refrigeration cycle Increases C.O.P. Decreases C.O.P. None of these Does not alter C.O.P. Increases C.O.P. Decreases C.O.P. None of these Does not alter C.O.P. 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 + 2 O.P.)P = ( ( O.P.)R + 1 O.P)P = ( O.P)R - 1 O.P.)P = ( ( ( O.P)P = ( O.P)R ( O.P.)R + 2 O.P.)P = ( ( O.P.)R + 1 O.P)P = ( O.P)R - 1 O.P.)P = ( ( ( O.P)P = ( O.P)R ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 25 kJ/kg 100 kJ/kg 50 kJ/kg 125 kJ/kg 25 kJ/kg 100 kJ/kg 50 kJ/kg 125 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
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