Refrigeration and Air Conditioning In a spray washing system, if the temperature of water is higher than the dry bulb temperature of entering air, then the air is Cooled and dehumidified Cooled and humidified Heated and humidified Heated and dehumidified Cooled and dehumidified Cooled and humidified Heated and humidified Heated and dehumidified ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Environmental protection agencies advice against the use of chlorofluorocarbon refrigerants since These react with water vapour and cause acid rain These react with oxygen and cause its depletion These react with ozone layer These react with plants and cause greenhouse effect These react with water vapour and cause acid rain These react with oxygen and cause its depletion These react with ozone layer These react with plants and cause greenhouse effect ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The coefficient of performance is the ratio of the refrigerant effect to the All of these Work done by compressor Heat of compression Enthalpy increase in compressor All of these Work done by compressor Heat of compression Enthalpy increase in compressor ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A bootstrap air cooling system has Four heat exchangers Three heat exchangers One heat exchanger Two heat exchangers Four heat exchangers Three heat exchangers One heat exchanger Two heat exchangers 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)P = ( ( O.P)P = ( ( O.P.)P = ( ( O.P)R O.P.)R + 2 O.P.)R + 1 ( O.P)R - 1 O.P.)P = ( O.P)P = ( ( O.P)P = ( ( O.P.)P = ( ( O.P)R O.P.)R + 2 O.P.)R + 1 ( O.P)R - 1 ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning In which of the following refrigeration system, waste heat can be effectively used? None of the listed here Vapour compression cycle Vapour absorption cycle Air refrigeration cycle None of the listed here Vapour compression cycle Vapour absorption cycle Air refrigeration cycle ANSWER DOWNLOAD EXAMIANS APP
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